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Bouvet Island 14 Day Long Range Forecast

14 Day weather providing an extended long range forecast outlook for Bouvet Island

Bouvet Island

Long range weather outlook for Bouvet Island includes 14 day forecast summary:

Over the next 14 days the Bouvet Island forecast suggests the average daytime maximum temperature will be around -3°C, with a high for the two weeks of 3°C expected on the afternoon of Wednesday 5th. The average minimum temperature will be -7°C, dipping to its lowest on the evening of Wednesday 5th at -11°C. Expect the coming 14 days to have most days seeing a little snow. It looks like Monday 10th will have the most precipitation with an accumulation of around 4.0mm. On the whole winds are likely to be strong. The strongest wind will be experienced on the morning of Tuesday 4th, coming from a westerly direction, and reaching around 44mph.

DayLocal TimeDirSpeed/
Gust
Temp/
Feels Like
HumidityPressureCloud AmountPrecip AmountWeather
Tue 04
Aug
12:00

W
W

43 / 69 mph 31 / 13°F 87% 1006 mb
Low level cloud: 100%
Mid level cloud: 11%
High level cloud: 7%
Most Significant Cloud Type: low
100%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
15:00

W
W

40 / 57 mph 32 / 15°F 87% 1005 mb
Low level cloud: 100%
Mid level cloud: 5%
High level cloud: 12%
Most Significant Cloud Type: low
100%
Expect 0.01 In of precipitation over the past 3 hours.
0.01 In
18:00

W
W

40 / 64 mph 31 / 14°F 88% 1007 mb
Low level cloud: 100%
Mid level cloud: 7%
High level cloud: 9%
Most Significant Cloud Type: low
100%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
21:00

W
W

36 / 66 mph 29 / 12°F 90% 1008 mb
Low level cloud: 98%
Mid level cloud: 44%
High level cloud: 32%
Most Significant Cloud Type: low
100%
Expect 0.01 In of precipitation over the past 3 hours.
0.01 In
Wed 05
Aug
00:00

W
W

36 / 42 mph 35 / 21°F 91% 1008 mb
Low level cloud: 100%
Mid level cloud: 46%
High level cloud: 69%
Most Significant Cloud Type: low
100%
Expect 0.01 In of precipitation over the past 3 hours.
0.01 In
03:00

W
W

37 / 43 mph 36 / 22°F 92% 1006 mb
Low level cloud: 99%
Mid level cloud: 48%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.01 In of precipitation over the past 3 hours.
0.01 In
06:00

W
W

39 / 45 mph 37 / 22°F 94% 1004 mb
Low level cloud: 85%
Mid level cloud: 92%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.02 In of precipitation over the past 3 hours.
0.02 In
09:00

W
W

35 / 40 mph 36 / 22°F 93% 1003 mb
Low level cloud: 100%
Mid level cloud: 44%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.02 In of precipitation over the past 3 hours.
0.02 In
12:00

WSW
WSW

29 / 34 mph 37 / 24°F 91% 1003 mb
Low level cloud: 89%
Mid level cloud: 91%
High level cloud: 29%
Most Significant Cloud Type: low
100%
Expect 0.01 In of precipitation over the past 3 hours.
0.01 In
15:00

WSW
WSW

27 / 31 mph 37 / 25°F 92% 1004 mb
Low level cloud: 95%
Mid level cloud: 78%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.01 In of precipitation over the past 3 hours.
0.01 In
18:00

SW
SW

25 / 53 mph 16 / -3°F 83% 1008 mb
Low level cloud: 59%
Mid level cloud: 9%
High level cloud: 0%
Most Significant Cloud Type: low
61%
Expect 0.01 In of precipitation over the past 3 hours.
0.01 In
21:00

SW
SW

22 / 46 mph 13 / -6°F 70% 1010 mb
Low level cloud: 0%
Mid level cloud: 7%
High level cloud: 0%
Most Significant Cloud Type: medium
6%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
Thu 06
Aug
00:00

WSW
WSW

18 / 38 mph 15 / -1°F 69% 1011 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 11%
Most Significant Cloud Type: medium
3%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
03:00

WSW
WSW

19 / 41 mph 17 / 1°F 73% 1011 mb
Low level cloud: 2%
Mid level cloud: 79%
High level cloud: 18%
Most Significant Cloud Type: medium
86%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
06:00

W
W

20 / 34 mph 23 / 8°F 74% 1011 mb
Low level cloud: 24%
Mid level cloud: 11%
High level cloud: 27%
Most Significant Cloud Type: low
30%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
09:00

W
W

20 / 34 mph 24 / 9°F 81% 1010 mb
Low level cloud: 98%
Mid level cloud: 9%
High level cloud: 15%
Most Significant Cloud Type: low
100%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
12:00

W
W

18 / 26 mph 27 / 13°F 82% 1008 mb
Low level cloud: 100%
Mid level cloud: 11%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
15:00

WNW
WNW

20 / 29 mph 26 / 12°F 83% 1005 mb
Low level cloud: 100%
Mid level cloud: 11%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
18:00

W
W

21 / 35 mph 25 / 10°F 86% 1004 mb
Low level cloud: 100%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
21:00

W
W

20 / 28 mph 28 / 14°F 92% 1002 mb
Low level cloud: 86%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
Fri 07
Aug
00:00

WSW
WSW

21 / 43 mph 24 / 10°F 94% 1002 mb
Low level cloud: 98%
Mid level cloud: 92%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.01 In of precipitation over the past 3 hours.
0.01 In
03:00

SW
SW

23 / 46 mph 24 / 8°F 89% 1002 mb
Low level cloud: 100%
Mid level cloud: 24%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
06:00

SW
SW

22 / 47 mph 24 / 8°F 86% 1004 mb
Low level cloud: 100%
Mid level cloud: 9%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
09:00

SW
SW

23 / 46 mph 24 / 9°F 87% 1006 mb
Low level cloud: 98%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: low
99%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
12:00

WSW
WSW

24 / 46 mph 25 / 10°F 85% 1008 mb
Low level cloud: 93%
Mid level cloud: 20%
High level cloud: 7%
Most Significant Cloud Type: low
100%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
15:00

WSW
WSW

29 / 60 mph 25 / 9°F 92% 1008 mb
Low level cloud: 100%
Mid level cloud: 11%
High level cloud: 2%
Most Significant Cloud Type: low
100%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
18:00

WSW
WSW

22 / 46 mph 25 / 10°F 88% 1010 mb
Low level cloud: 86%
Mid level cloud: 7%
High level cloud: 0%
Most Significant Cloud Type: low
88%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
21:00

WSW
WSW

21 / 44 mph 24 / 10°F 90% 1012 mb
Low level cloud: 32%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: low
33%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
Sat 08
Aug
00:00

WSW
WSW

19 / 38 mph 26 / 12°F 93% 1013 mb
Low level cloud: 50%
Mid level cloud: 0%
High level cloud: 1%
Most Significant Cloud Type: low
50%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
03:00

WSW
WSW

17 / 34 mph 24 / 11°F 93% 1014 mb
Low level cloud: 95%
Mid level cloud: 0%
High level cloud: 1%
Most Significant Cloud Type: low
95%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
06:00

WSW
WSW

13 / 28 mph 23 / 11°F 91% 1014 mb
Low level cloud: 93%
Mid level cloud: 0%
High level cloud: 3%
Most Significant Cloud Type: low
93%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
09:00

WNW
WNW

13 / 24 mph 26 / 14°F 92% 1014 mb
Low level cloud: 100%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
12:00

NW
NW

15 / 21 mph 28 / 17°F 88% 1014 mb
Low level cloud: 100%
Mid level cloud: 0%
High level cloud: 1%
Most Significant Cloud Type: low
100%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
15:00

NNW
NNW

19 / 25 mph 30 / 17°F 89% 1012 mb
Low level cloud: 99%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
98%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
18:00

NNW
NNW

24 / 34 mph 28 / 14°F 87% 1010 mb
Low level cloud: 100%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
21:00

NNW
NNW

24 / 47 mph 27 / 12°F 89% 1008 mb
Low level cloud: 100%
Mid level cloud: 1%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
Sun 09
Aug
00:00

N
N

26 / 43 mph 29 / 14°F 85% 1006 mb
Low level cloud: 48%
Mid level cloud: 43%
High level cloud: 100%
Most Significant Cloud Type: low
74%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
03:00

N
N

30 / 56 mph 27 / 11°F 93% 1002 mb
Low level cloud: 95%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
06:00

N
N

32 / 67 mph 26 / 8°F 96% 999 mb
Low level cloud: 90%
Mid level cloud: 61%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.02 In of precipitation over the past 3 hours.
0.02 In
09:00

N
N

29 / 56 mph 29 / 14°F 97% 997 mb
Low level cloud: 100%
Mid level cloud: 44%
High level cloud: 39%
Most Significant Cloud Type: low
100%
Expect 0.01 In of precipitation over the past 3 hours.
0.01 In
12:00

N
N

26 / 34 mph 33 / 19°F 97% 994 mb
Low level cloud: 91%
Mid level cloud: 48%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.01 In of precipitation over the past 3 hours.
0.01 In
15:00

N
N

28 / 36 mph 34 / 21°F 96% 992 mb
Low level cloud: 98%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.01 In of precipitation over the past 3 hours.
0.01 In
18:00

NNW
NNW

27 / 40 mph 33 / 19°F 98% 990 mb
Low level cloud: 97%
Mid level cloud: 19%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.04 In of precipitation over the past 3 hours.
0.04 In
21:00

NW
NW

15 / 23 mph 30 / 19°F 91% 990 mb
Low level cloud: 95%
Mid level cloud: 0%
High level cloud: 10%
Most Significant Cloud Type: low
96%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
Mon 10
Aug
00:00

NNW
NNW

10 / 22 mph 23 / 13°F 94% 989 mb
Low level cloud: 77%
Mid level cloud: 6%
High level cloud: 100%
Most Significant Cloud Type: low
91%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
03:00

N
N

7 / 14 mph 23 / 15°F 97% 988 mb
Low level cloud: 75%
Mid level cloud: 82%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.02 In of precipitation over the past 3 hours.
0.02 In
06:00

E
E

4 / 9 mph 22 / 17°F 97% 986 mb
Low level cloud: 79%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.03 In of precipitation over the past 3 hours.
0.03 In
09:00

SSE
SSE

9 / 19 mph 24 / 14°F 96% 984 mb
Low level cloud: 70%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.03 In of precipitation over the past 3 hours.
0.03 In
12:00

SSW
SSW

14 / 27 mph 25 / 13°F 95% 982 mb
Low level cloud: 71%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.03 In of precipitation over the past 3 hours.
0.03 In
15:00

SW
SW

17 / 27 mph 26 / 13°F 92% 979 mb
Low level cloud: 67%
Mid level cloud: 66%
High level cloud: 98%
Most Significant Cloud Type: low
100%
Expect 0.04 In of precipitation over the past 3 hours.
0.04 In
18:00

SW
SW

14 / 26 mph 25 / 13°F 85% 979 mb
Low level cloud: 49%
Mid level cloud: 22%
High level cloud: 87%
Most Significant Cloud Type: low
67%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
21:00

WSW
WSW

15 / 31 mph 24 / 11°F 79% 979 mb
Low level cloud: 18%
Mid level cloud: 42%
High level cloud: 32%
Most Significant Cloud Type: low
36%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
DayLocal TimeDirSpeed/
Gust
Temp/
Feels Like
HumidityPressureCloud AmountPrecip AmountWeather
Tue 11
Aug
00:00

WSW
WSW

27 / 53 mph 15 / -5°F 87% 988 mb
Low level cloud: 99%
Mid level cloud: 100%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.02 In
06:00

SSE
SSE

10 / 20 mph 19 / 8°F 73% 997 mb
Low level cloud: 6%
Mid level cloud: 2%
High level cloud: 38%
Most Significant Cloud Type: low
11%
0.00 In
12:00

W
W

25 / 51 mph 22 / 6°F 80% 980 mb
Low level cloud: 72%
Mid level cloud: 70%
High level cloud: 0%
Most Significant Cloud Type: low
96%
0.01 In
18:00

W
W

30 / 55 mph 20 / 1°F 91% 971 mb
Low level cloud: 98%
Mid level cloud: 97%
High level cloud: 22%
Most Significant Cloud Type: low
100%
0.05 In
Wed 12
Aug
00:00

SW
SW

22 / 46 mph 8 / -12°F 87% 1007 mb
Low level cloud: 100%
Mid level cloud: 17%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.01 In
06:00

SW
SW

23 / 49 mph 20 / 3°F 86% 988 mb
Low level cloud: 100%
Mid level cloud: 4%
High level cloud: 1%
Most Significant Cloud Type: low
100%
0.01 In
12:00

SSW
SSW

35 / 51 mph 11 / -13°F 94% 995 mb
Low level cloud: 100%
Mid level cloud: 20%
High level cloud: 12%
Most Significant Cloud Type: low
100%
0.02 In
18:00

S
S

8 / 13 mph 23 / 14°F 84% 994 mb
Low level cloud: 100%
Mid level cloud: 7%
High level cloud: 20%
Most Significant Cloud Type: low
100%
0.00 In
Thu 13
Aug
00:00

SSW
SSW

40 / 81 mph 12 / -13°F 79% 1007 mb
Low level cloud: 100%
Mid level cloud: 0%
High level cloud: 1%
Most Significant Cloud Type: low
100%
0.02 In
06:00

SSE
SSE

12 / 26 mph 19 / 6°F 82% 1004 mb
Low level cloud: 95%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: low
96%
0.00 In
12:00

SW
SW

28 / 59 mph 15 / -4°F 89% 1014 mb
Low level cloud: 100%
Mid level cloud: 45%
High level cloud: 13%
Most Significant Cloud Type: low
100%
0.00 In
18:00

ESE
ESE

3 / 4 mph 22 / 18°F 79% 1008 mb
Low level cloud: 100%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.00 In
Fri 14
Aug
00:00

SW
SW

30 / 64 mph 16 / -5°F 81% 1017 mb
Low level cloud: 100%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.00 In
06:00

NE
NE

28 / 59 mph 22 / 4°F 85% 997 mb
Low level cloud: 100%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.01 In
12:00

WNW
WNW

19 / 21 mph 32 / 20°F 82% 1016 mb
Low level cloud: 62%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.00 In
18:00

NE
NE

41 / 47 mph 37 / 23°F 95% 977 mb
Low level cloud: 80%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.12 In
Sat 15
Aug
00:00

NW
NW

31 / 64 mph 29 / 13°F 96% 1000 mb
Low level cloud: 96%
Mid level cloud: 12%
High level cloud: 8%
Most Significant Cloud Type: low
100%
0.06 In
06:00

NE
NE

19 / 40 mph 24 / 10°F 92% 970 mb
Low level cloud: 62%
Mid level cloud: 16%
High level cloud: 0%
Most Significant Cloud Type: low
67%
0.00 In
12:00

WNW
WNW

30 / 40 mph 33 / 18°F 93% 992 mb
Low level cloud: 84%
Mid level cloud: 27%
High level cloud: 76%
Most Significant Cloud Type: low
100%
0.08 In
18:00

SSE
SSE

20 / 37 mph 27 / 13°F 92% 972 mb
Low level cloud: 82%
Mid level cloud: 44%
High level cloud: 11%
Most Significant Cloud Type: low
98%
0.01 In
Sun 16
Aug
00:00

WNW
WNW

20 / 31 mph 29 / 16°F 88% 991 mb
Low level cloud: 65%
Mid level cloud: 99%
High level cloud: 33%
Most Significant Cloud Type: low
100%
0.00 In
06:00

SSE
SSE

18 / 38 mph 16 / 0°F 89% 985 mb
Low level cloud: 100%
Mid level cloud: 43%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.01 In
12:00

SW
SW

26 / 50 mph 21 / 4°F 91% 993 mb
Low level cloud: 90%
Mid level cloud: 24%
High level cloud: 0%
Most Significant Cloud Type: low
97%
0.01 In
18:00

S
S

21 / 24 mph 23 / 8°F 87% 1000 mb
Low level cloud: 100%
Mid level cloud: 93%
High level cloud: 15%
Most Significant Cloud Type: low
100%
0.01 In
Mon 17
Aug
00:00

WSW
WSW

21 / 43 mph 10 / -9°F 76% 1006 mb
Low level cloud: 100%
Mid level cloud: 9%
High level cloud: 19%
Most Significant Cloud Type: low
100%
0.00 In
06:00

SW
SW

26 / 54 mph 7 / -16°F 88% 1004 mb
Low level cloud: 49%
Mid level cloud: 19%
High level cloud: 0%
Most Significant Cloud Type: low
55%
0.00 In
12:00

WSW
WSW

26 / 54 mph 18 / 0°F 81% 1007 mb
Low level cloud: 100%
Mid level cloud: 13%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.01 In
18:00

SW
SW

25 / 28 mph 13 / -6°F 82% 1004 mb
Low level cloud: 100%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.00 In
Tue 18
Aug
00:00

SW
SW

18 / 35 mph 14 / -3°F 78% 1014 mb
Low level cloud: 100%
Mid level cloud: 1%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.00 In
06:00

SSW
SSW

30 / 60 mph 6 / -18°F 87% 1008 mb
Low level cloud: 100%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.01 In
12:00

WSW
WSW

14 / 28 mph 17 / 3°F 77% 1018 mb
Low level cloud: 100%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.01 In
18:00

SW
SW

24 / 51 mph 6 / -15°F 82% 1015 mb
Low level cloud: 53%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: low
55%
0.00 In
Wed 19
Aug
00:00

W
W

15 / 32 mph 21 / 7°F 78% 1019 mb
Low level cloud: 100%
Mid level cloud: 4%
High level cloud: 4%
Most Significant Cloud Type: low
100%
0.00 In
06:00

SW
SW

29 / 60 mph 17 / -3°F 76% 1017 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: medium
4%
0.01 In
12:00

WNW
WNW

22 / 46 mph 22 / 7°F 87% 1018 mb
Low level cloud: 92%
Mid level cloud: 28%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.00 In
18:00

WSW
WSW

26 / 54 mph 22 / 5°F 82% 1019 mb
Low level cloud: 100%
Mid level cloud: 46%
High level cloud: 32%
Most Significant Cloud Type: low
100%
0.00 In

The day label given represents the local day relative to the local time for the location you are looking at.
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Day

This time is corrected for local time zones and where possible for daylight saving times.
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Local Time

The wind direction we use on this page is the direction the wind is coming from, given in a 16 point compass format.
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Dir

This refers to the sustained average wind speed, normally averaged over a period of 10 minutes for up to 3 hrs.
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Speed/
Gust

Temperature from our forecast perspective are fairly well defined, they are what we would expect to measure in a standard meteorological screen (in other words, shaded and well ventilated) at 2 metres above ground level.
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Temp/
Feels Like

The relative humidity is the percent of saturation humidity, generally calculated in relation to saturated vapour density.
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Humidity

The value given is a total predicted for the previous 3 hrs and includes the time of the forecast being looked at.
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Precip Amount

The total amount of cloud as a percentage is derived from looking at cloud cover throughout the atmosphere and estimating how these combine when looked at from the ground.
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Cloud Amount

Here we try to capture the feel of the weather as an image � it will never be perfect but is useful for a quick overview.
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Weather

When we measure for forecast air pressure we are normally doing this relative to a certain height and most commonly relative to Mean Sea Level.
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Pressure