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Cwm Gwyn 14 Day Long Range Forecast

14 Day weather providing an extended long range forecast outlook for Cwm Gwyn

Abertawe, United Kingdom

Long range weather outlook for Cwm Gwyn includes 14 day forecast summary:

Reviewing the forecast for Cwm Gwyn Over the next 14 days and the average daytime maximum temperature will be around 10°C, with a high for the two weeks of 13°C expected on the afternoon of Friday 21st. The average minimum temperature will be 7°C, dipping to its lowest on the morning of Monday 24th at 5°C. The coming 14 days will have some days seeing a little precipitation and some days with rain. The current forecast indicates Tuesday 18th will have the most precipitation with an accumulation of around 34.0mm. On the whole winds are likely to be moderate. The strongest wind will be experienced on the afternoon of Tuesday 18th, coming from a southerly direction, and reaching around 33mph.

DayLocal TimeDirSpeed/
Gust
Temp/
Feels Like
HumidityPressureCloud AmountPrecip AmountWeather
Sat 15
Dec
15:00

S
S

19 / 30 mph 54 / 49°F 95% 995 mb
Low level cloud: 100%
Mid level cloud: 78%
High level cloud: 35%
Most Significant Cloud Type: low
100%
Expect 0.46 In of precipitation over the past 3 hours.
0.46 In
18:00

SW
SW

30 / 43 mph 53 / 46°F 81% 994 mb
Low level cloud: 88%
Mid level cloud: 22%
High level cloud: 0%
Most Significant Cloud Type: low
95%
Expect 0.06 In of precipitation over the past 3 hours.
0.06 In
21:00

W
W

27 / 35 mph 49 / 40°F 75% 998 mb
Low level cloud: 83%
Mid level cloud: 76%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.01 In of precipitation over the past 3 hours.
0.01 In
Sun 16
Dec
00:00

W
W

18 / 28 mph 47 / 40°F 77% 1003 mb
Low level cloud: 42%
Mid level cloud: 24%
High level cloud: 0%
Most Significant Cloud Type: low
50%
Expect 0.01 In of precipitation over the past 3 hours.
0.01 In
03:00

WSW
WSW

15 / 24 mph 46 / 40°F 81% 1004 mb
Low level cloud: 16%
Mid level cloud: 69%
High level cloud: 1%
Most Significant Cloud Type: medium
100%
Expect 0.04 In of precipitation over the past 3 hours.
0.04 In
06:00

WSW
WSW

13 / 23 mph 45 / 39°F 79% 1004 mb
Low level cloud: 14%
Mid level cloud: 25%
High level cloud: 40%
Most Significant Cloud Type: low
28%
Expect 0.06 In of precipitation over the past 3 hours.
0.06 In
09:00

SW
SW

12 / 17 mph 48 / 42°F 80% 1005 mb
Low level cloud: 28%
Mid level cloud: 44%
High level cloud: 100%
Most Significant Cloud Type: low
55%
Expect 0.04 In of precipitation over the past 3 hours.
0.04 In
12:00

SW
SW

14 / 19 mph 50 / 44°F 78% 1005 mb
Low level cloud: 24%
Mid level cloud: 80%
High level cloud: 100%
Most Significant Cloud Type: medium
100%
Expect 0.05 In of precipitation over the past 3 hours.
0.05 In
15:00

WSW
WSW

14 / 20 mph 51 / 46°F 78% 1005 mb
Low level cloud: 20%
Mid level cloud: 44%
High level cloud: 91%
Most Significant Cloud Type: low
46%
Expect 0.07 In of precipitation over the past 3 hours.
0.07 In
18:00

WSW
WSW

11 / 13 mph 50 / 46°F 78% 1007 mb
Low level cloud: 22%
Mid level cloud: 20%
High level cloud: 13%
Most Significant Cloud Type: low
30%
Expect 0.03 In of precipitation over the past 3 hours.
0.03 In
21:00

WSW
WSW

12 / 17 mph 48 / 43°F 79% 1010 mb
Low level cloud: 26%
Mid level cloud: 22%
High level cloud: 37%
Most Significant Cloud Type: low
37%
Expect 0.02 In of precipitation over the past 3 hours.
0.02 In
Mon 17
Dec
00:00

W
W

12 / 18 mph 48 / 42°F 80% 1011 mb
Low level cloud: 28%
Mid level cloud: 10%
High level cloud: 21%
Most Significant Cloud Type: low
33%
Expect 0.02 In of precipitation over the past 3 hours.
0.02 In
03:00

WSW
WSW

10 / 17 mph 46 / 41°F 78% 1013 mb
Low level cloud: 34%
Mid level cloud: 7%
High level cloud: 15%
Most Significant Cloud Type: low
38%
Expect 0.01 In of precipitation over the past 3 hours.
0.01 In
06:00

SW
SW

11 / 20 mph 45 / 40°F 80% 1014 mb
Low level cloud: 47%
Mid level cloud: 15%
High level cloud: 47%
Most Significant Cloud Type: low
58%
Expect 0.02 In of precipitation over the past 3 hours.
0.02 In
09:00

SSW
SSW

13 / 22 mph 48 / 42°F 81% 1015 mb
Low level cloud: 59%
Mid level cloud: 23%
High level cloud: 62%
Most Significant Cloud Type: low
74%
Expect 0.01 In of precipitation over the past 3 hours.
0.01 In
12:00

SSW
SSW

18 / 27 mph 51 / 45°F 80% 1015 mb
Low level cloud: 85%
Mid level cloud: 72%
High level cloud: 44%
Most Significant Cloud Type: low
100%
Expect 0.01 In of precipitation over the past 3 hours.
0.01 In
15:00

SSW
SSW

20 / 30 mph 52 / 46°F 82% 1014 mb
Low level cloud: 84%
Mid level cloud: 50%
High level cloud: 83%
Most Significant Cloud Type: low
100%
Expect 0.01 In of precipitation over the past 3 hours.
0.01 In
18:00

SSW
SSW

23 / 40 mph 51 / 44°F 85% 1013 mb
Low level cloud: 90%
Mid level cloud: 44%
High level cloud: 57%
Most Significant Cloud Type: low
100%
Expect 0.03 In of precipitation over the past 3 hours.
0.03 In
21:00

SSW
SSW

24 / 51 mph 49 / 41°F 85% 1013 mb
Low level cloud: 92%
Mid level cloud: 37%
High level cloud: 9%
Most Significant Cloud Type: low
100%
Expect 0.04 In of precipitation over the past 3 hours.
0.04 In
Tue 18
Dec
00:00

S
S

26 / 54 mph 48 / 40°F 84% 1011 mb
Low level cloud: 92%
Mid level cloud: 26%
High level cloud: 85%
Most Significant Cloud Type: low
100%
Expect 0.01 In of precipitation over the past 3 hours.
0.01 In
03:00

S
S

30 / 63 mph 47 / 37°F 80% 1009 mb
Low level cloud: 91%
Mid level cloud: 44%
High level cloud: 74%
Most Significant Cloud Type: low
100%
Expect 0.03 In of precipitation over the past 3 hours.
0.03 In
06:00

S
S

30 / 62 mph 46 / 36°F 75% 1005 mb
Low level cloud: 62%
Mid level cloud: 46%
High level cloud: 98%
Most Significant Cloud Type: low
89%
Expect 0.01 In of precipitation over the past 3 hours.
0.01 In
09:00

SSE
SSE

33 / 59 mph 48 / 39°F 79% 1002 mb
Low level cloud: 72%
Mid level cloud: 94%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.14 In of precipitation over the past 3 hours.
0.14 In
12:00

S
S

34 / 44 mph 51 / 43°F 85% 999 mb
Low level cloud: 98%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.42 In of precipitation over the past 3 hours.
0.42 In
15:00

S
S

32 / 39 mph 52 / 45°F 82% 997 mb
Low level cloud: 95%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.29 In of precipitation over the past 3 hours.
0.29 In
18:00

W
W

15 / 17 mph 51 / 46°F 92% 997 mb
Low level cloud: 96%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.32 In of precipitation over the past 3 hours.
0.32 In
21:00

W
W

9 / 10 mph 49 / 45°F 81% 999 mb
Low level cloud: 38%
Mid level cloud: 77%
High level cloud: 0%
Most Significant Cloud Type: low
64%
Expect 0.12 In of precipitation over the past 3 hours.
0.12 In
Wed 19
Dec
00:00

WSW
WSW

13 / 23 mph 46 / 40°F 80% 1003 mb
Low level cloud: 18%
Mid level cloud: 9%
High level cloud: 0%
Most Significant Cloud Type: low
20%
Expect 0.01 In of precipitation over the past 3 hours.
0.01 In
03:00

WSW
WSW

14 / 23 mph 46 / 40°F 77% 1005 mb
Low level cloud: 12%
Mid level cloud: 8%
High level cloud: 0%
Most Significant Cloud Type: low
15%
Expect 0.01 In of precipitation over the past 3 hours.
0.01 In
06:00

WSW
WSW

14 / 24 mph 46 / 39°F 76% 1006 mb
Low level cloud: 12%
Mid level cloud: 14%
High level cloud: 0%
Most Significant Cloud Type: low
17%
Expect 0.02 In of precipitation over the past 3 hours.
0.02 In
09:00

SW
SW

14 / 23 mph 46 / 40°F 74% 1008 mb
Low level cloud: 18%
Mid level cloud: 11%
High level cloud: 21%
Most Significant Cloud Type: low
24%
Expect 0.02 In of precipitation over the past 3 hours.
0.02 In
12:00

SW
SW

17 / 29 mph 47 / 40°F 71% 1009 mb
Low level cloud: 4%
Mid level cloud: 15%
High level cloud: 96%
Most Significant Cloud Type: medium
28%
Expect 0.03 In of precipitation over the past 3 hours.
0.03 In
15:00

SW
SW

16 / 26 mph 47 / 41°F 75% 1009 mb
Low level cloud: 6%
Mid level cloud: 74%
High level cloud: 70%
Most Significant Cloud Type: medium
93%
Expect 0.06 In of precipitation over the past 3 hours.
0.06 In
18:00

SW
SW

14 / 23 mph 47 / 41°F 75% 1010 mb
Low level cloud: 6%
Mid level cloud: 9%
High level cloud: 12%
Most Significant Cloud Type: low
10%
Expect 0.02 In of precipitation over the past 3 hours.
0.02 In
21:00

WSW
WSW

15 / 26 mph 46 / 40°F 78% 1012 mb
Low level cloud: 28%
Mid level cloud: 45%
High level cloud: 11%
Most Significant Cloud Type: low
44%
Expect 0.03 In of precipitation over the past 3 hours.
0.03 In
Thu 20
Dec
00:00

WSW
WSW

14 / 28 mph 45 / 39°F 82% 1012 mb
Low level cloud: 10%
Mid level cloud: 54%
High level cloud: 16%
Most Significant Cloud Type: medium
82%
Expect 0.10 In of precipitation over the past 3 hours.
0.10 In
03:00

W
W

11 / 22 mph 45 / 39°F 80% 1014 mb
Low level cloud: 0%
Mid level cloud: 81%
High level cloud: 0%
Most Significant Cloud Type: medium
81%
Expect 0.08 In of precipitation over the past 3 hours.
0.08 In
06:00

WNW
WNW

9 / 16 mph 44 / 40°F 83% 1015 mb
Low level cloud: 8%
Mid level cloud: 31%
High level cloud: 2%
Most Significant Cloud Type: medium
52%
Expect 0.01 In of precipitation over the past 3 hours.
0.01 In
09:00

WNW
WNW

5 / 9 mph 45 / 42°F 81% 1018 mb
Low level cloud: 1%
Mid level cloud: 32%
High level cloud: 0%
Most Significant Cloud Type: medium
34%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
12:00

WNW
WNW

6 / 11 mph 47 / 43°F 76% 1019 mb
Low level cloud: 2%
Mid level cloud: 20%
High level cloud: 0%
Most Significant Cloud Type: medium
24%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
15:00

WNW
WNW

8 / 14 mph 47 / 43°F 78% 1019 mb
Low level cloud: 5%
Mid level cloud: 30%
High level cloud: 0%
Most Significant Cloud Type: medium
43%
Expect 0.01 In of precipitation over the past 3 hours.
0.01 In
18:00

WNW
WNW

6 / 9 mph 47 / 44°F 79% 1021 mb
Low level cloud: 0%
Mid level cloud: 15%
High level cloud: 73%
Most Significant Cloud Type: medium
17%
Expect 0.01 In of precipitation over the past 3 hours.
0.01 In
21:00

WSW
WSW

4 / 7 mph 46 / 44°F 79% 1022 mb
Low level cloud: 9%
Mid level cloud: 4%
High level cloud: 58%
Most Significant Cloud Type: low
17%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
Fri 21
Dec
00:00

SSW
SSW

10 / 14 mph 49 / 45°F 82% 1021 mb
Low level cloud: 58%
Mid level cloud: 62%
High level cloud: 86%
Most Significant Cloud Type: low
89%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
03:00

S
S

14 / 21 mph 47 / 42°F 88% 1019 mb
Low level cloud: 90%
Mid level cloud: 90%
High level cloud: 81%
Most Significant Cloud Type: low
100%
Expect 0.03 In of precipitation over the past 3 hours.
0.03 In
06:00

SSW
SSW

18 / 38 mph 46 / 39°F 93% 1016 mb
Low level cloud: 94%
Mid level cloud: 76%
High level cloud: 91%
Most Significant Cloud Type: low
100%
Expect 0.12 In of precipitation over the past 3 hours.
0.12 In
09:00

SSW
SSW

21 / 41 mph 50 / 43°F 92% 1014 mb
Low level cloud: 94%
Mid level cloud: 85%
High level cloud: 51%
Most Significant Cloud Type: low
100%
Expect 0.08 In of precipitation over the past 3 hours.
0.08 In
12:00

SSW
SSW

22 / 34 mph 53 / 47°F 93% 1011 mb
Low level cloud: 97%
Mid level cloud: 88%
High level cloud: 94%
Most Significant Cloud Type: low
100%
Expect 0.19 In of precipitation over the past 3 hours.
0.19 In
15:00

SW
SW

19 / 26 mph 55 / 50°F 95% 1008 mb
Low level cloud: 96%
Mid level cloud: 88%
High level cloud: 88%
Most Significant Cloud Type: low
100%
Expect 0.33 In of precipitation over the past 3 hours.
0.33 In
18:00

SW
SW

11 / 17 mph 53 / 50°F 97% 1008 mb
Low level cloud: 91%
Mid level cloud: 68%
High level cloud: 1%
Most Significant Cloud Type: low
100%
Expect 0.06 In of precipitation over the past 3 hours.
0.06 In
21:00

W
W

13 / 22 mph 51 / 46°F 94% 1008 mb
Low level cloud: 93%
Mid level cloud: 13%
High level cloud: 0%
Most Significant Cloud Type: low
97%
Expect 0.10 In of precipitation over the past 3 hours.
0.10 In
DayLocal TimeDirSpeed/
Gust
Temp/
Feels Like
HumidityPressureCloud AmountPrecip AmountWeather
Sat 22
Dec
00:00

ESE
ESE

14 / 18 mph 43 / 36°F 90% 1015 mb
Low level cloud: 21%
Mid level cloud: 61%
High level cloud: 80%
Most Significant Cloud Type: medium
100%
0.00 In
06:00

NW
NW

13 / 23 mph 45 / 38°F 86% 997 mb
Low level cloud: 76%
Mid level cloud: 57%
High level cloud: 14%
Most Significant Cloud Type: low
97%
0.12 In
12:00

WNW
WNW

11 / 14 mph 49 / 44°F 80% 1007 mb
Low level cloud: 63%
Mid level cloud: 55%
High level cloud: 19%
Most Significant Cloud Type: low
84%
0.00 In
18:00

N
N

5 / 6 mph 47 / 45°F 80% 1007 mb
Low level cloud: 0%
Mid level cloud: 64%
High level cloud: 86%
Most Significant Cloud Type: medium
67%
0.00 In
Sun 23
Dec
00:00

WNW
WNW

14 / 23 mph 44 / 37°F 80% 1005 mb
Low level cloud: 54%
Mid level cloud: 53%
High level cloud: 21%
Most Significant Cloud Type: low
75%
0.00 In
06:00

SE
SE

21 / 33 mph 46 / 38°F 92% 1011 mb
Low level cloud: 97%
Mid level cloud: 85%
High level cloud: 98%
Most Significant Cloud Type: low
100%
0.16 In
12:00

SW
SW

26 / 30 mph 57 / 52°F 93% 1013 mb
Low level cloud: 92%
Mid level cloud: 81%
High level cloud: 83%
Most Significant Cloud Type: low
100%
0.18 In
18:00

NE
NE

8 / 10 mph 49 / 46°F 90% 999 mb
Low level cloud: 44%
Mid level cloud: 44%
High level cloud: 56%
Most Significant Cloud Type: low
66%
0.04 In
Mon 24
Dec
00:00

WSW
WSW

24 / 33 mph 55 / 49°F 94% 1009 mb
Low level cloud: 93%
Mid level cloud: 95%
High level cloud: 98%
Most Significant Cloud Type: low
100%
0.33 In
06:00

N
N

16 / 32 mph 43 / 35°F 86% 1003 mb
Low level cloud: 85%
Mid level cloud: 35%
High level cloud: 92%
Most Significant Cloud Type: low
100%
0.01 In
12:00

WNW
WNW

18 / 23 mph 50 / 44°F 76% 1013 mb
Low level cloud: 32%
Mid level cloud: 11%
High level cloud: 71%
Most Significant Cloud Type: low
44%
0.02 In
18:00

NW
NW

12 / 13 mph 48 / 43°F 83% 1012 mb
Low level cloud: 30%
Mid level cloud: 0%
High level cloud: 6%
Most Significant Cloud Type: low
30%
0.00 In
Tue 25
Dec
00:00

NW
NW

15 / 28 mph 43 / 35°F 76% 1020 mb
Low level cloud: 5%
Mid level cloud: 12%
High level cloud: 2%
Most Significant Cloud Type: low
9%
0.00 In
06:00

SSW
SSW

17 / 23 mph 48 / 42°F 82% 1011 mb
Low level cloud: 91%
Mid level cloud: 79%
High level cloud: 89%
Most Significant Cloud Type: low
100%
0.02 In
12:00

NW
NW

16 / 29 mph 43 / 36°F 76% 1030 mb
Low level cloud: 38%
Mid level cloud: 5%
High level cloud: 18%
Most Significant Cloud Type: low
41%
0.00 In
18:00

W
W

13 / 22 mph 47 / 41°F 84% 1009 mb
Low level cloud: 18%
Mid level cloud: 30%
High level cloud: 0%
Most Significant Cloud Type: low
28%
0.29 In
Wed 26
Dec
00:00

NW
NW

10 / 16 mph 43 / 37°F 85% 1034 mb
Low level cloud: 39%
Mid level cloud: 8%
High level cloud: 2%
Most Significant Cloud Type: low
41%
0.00 In
06:00

WNW
WNW

10 / 20 mph 42 / 37°F 79% 1019 mb
Low level cloud: 8%
Mid level cloud: 2%
High level cloud: 19%
Most Significant Cloud Type: low
10%
0.03 In
12:00

NW
NW

7 / 9 mph 46 / 43°F 79% 1036 mb
Low level cloud: 59%
Mid level cloud: 17%
High level cloud: 9%
Most Significant Cloud Type: low
66%
0.00 In
18:00

S
S

21 / 34 mph 48 / 41°F 89% 1019 mb
Low level cloud: 81%
Mid level cloud: 48%
High level cloud: 49%
Most Significant Cloud Type: low
100%
0.03 In
Thu 27
Dec
00:00

W
W

6 / 9 mph 45 / 41°F 86% 1035 mb
Low level cloud: 28%
Mid level cloud: 47%
High level cloud: 45%
Most Significant Cloud Type: low
49%
0.00 In
06:00

SW
SW

25 / 52 mph 45 / 37°F 91% 1015 mb
Low level cloud: 74%
Mid level cloud: 45%
High level cloud: 7%
Most Significant Cloud Type: low
90%
0.14 In
12:00

W
W

11 / 16 mph 46 / 41°F 79% 1033 mb
Low level cloud: 64%
Mid level cloud: 62%
High level cloud: 61%
Most Significant Cloud Type: low
92%
0.00 In
18:00

W
W

15 / 19 mph 53 / 48°F 70% 1025 mb
Low level cloud: 24%
Mid level cloud: 6%
High level cloud: 35%
Most Significant Cloud Type: low
30%
0.08 In
Fri 28
Dec
00:00

WNW
WNW

10 / 18 mph 45 / 39°F 83% 1032 mb
Low level cloud: 42%
Mid level cloud: 32%
High level cloud: 0%
Most Significant Cloud Type: low
52%
0.00 In
06:00

W
W

15 / 22 mph 46 / 40°F 77% 1030 mb
Low level cloud: 7%
Mid level cloud: 29%
High level cloud: 0%
Most Significant Cloud Type: medium
48%
0.05 In
12:00

W
W

7 / 9 mph 49 / 47°F 81% 1033 mb
Low level cloud: 22%
Mid level cloud: 56%
High level cloud: 41%
Most Significant Cloud Type: low
46%
0.00 In
18:00

W
W

7 / 9 mph 47 / 44°F 77% 1037 mb
Low level cloud: 12%
Mid level cloud: 4%
High level cloud: 33%
Most Significant Cloud Type: low
17%
0.00 In
Sat 29
Dec
00:00

SW
SW

2 / 3 mph 49 / 49°F 88% 1034 mb
Low level cloud: 4%
Mid level cloud: 7%
High level cloud: 0%
Most Significant Cloud Type: low
6%
0.00 In
06:00

S
S

10 / 19 mph 42 / 36°F 88% 1035 mb
Low level cloud: 25%
Mid level cloud: 9%
High level cloud: 33%
Most Significant Cloud Type: low
31%
0.00 In
12:00

ESE
ESE

5 / 6 mph 49 / 47°F 86% 1033 mb
Low level cloud: 16%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: low
17%
0.00 In
18:00

S
S

13 / 17 mph 48 / 43°F 89% 1029 mb
Low level cloud: 48%
Mid level cloud: 69%
High level cloud: 74%
Most Significant Cloud Type: low
81%
0.01 In
Sun 30
Dec
00:00

SE
SE

9 / 11 mph 43 / 38°F 93% 1033 mb
Low level cloud: 53%
Mid level cloud: 9%
High level cloud: 50%
Most Significant Cloud Type: low
62%
0.00 In
06:00

SSW
SSW

19 / 39 mph 45 / 37°F 92% 1020 mb
Low level cloud: 74%
Mid level cloud: 47%
High level cloud: 43%
Most Significant Cloud Type: low
96%
0.05 In
12:00

S
S

13 / 15 mph 49 / 44°F 83% 1033 mb
Low level cloud: 59%
Mid level cloud: 3%
High level cloud: 7%
Most Significant Cloud Type: low
61%
0.01 In
18:00

WNW
WNW

14 / 16 mph 49 / 44°F 77% 1023 mb
Low level cloud: 21%
Mid level cloud: 18%
High level cloud: 65%
Most Significant Cloud Type: low
34%
0.19 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