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Portrush 14 Day Long Range Forecast

14 Day weather providing an extended long range forecast outlook for Portrush

County Londonderry, United Kingdom

Long range weather outlook for Portrush includes 14 day forecast summary:

The outlook for Portrush in the two weeks ahead shows the average daytime maximum temperature will be around 9°C, with a high for the two weeks of 10°C expected on the evening of Monday 17th. The average minimum temperature will be 7°C, dipping to its lowest on the morning of Wednesday 19th at 6°C. The coming 14 days will have some days seeing a little precipitation and some days with rain. The indicators are that Tuesday 18th will have the most precipitation with an accumulation of around 12.0mm. On the whole winds are likely to be moderate. The forecast suggests the strongest wind will be on the afternoon of Friday 21st, coming from a westerly direction, and reaching around 35mph. However, the maximum wind gusts are expected on Tuesday morning.

DayLocal TimeDirSpeed/
Gust
Temp/
Feels Like
HumidityPressureCloud AmountPrecip AmountWeather
Mon 17
Dec
15:00

SSE
SSE

26 / 42 mph 49 / 41°F 84% 1003 mb
Low level cloud: 71%
Mid level cloud: 74%
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

SSE
SSE

25 / 43 mph 50 / 43°F 84% 1000 mb
Low level cloud: 83%
Mid level cloud: 46%
High level cloud: 84%
Most Significant Cloud Type: low
100%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
21:00

SSE
SSE

27 / 48 mph 51 / 43°F 82% 997 mb
Low level cloud: 74%
Mid level cloud: 70%
High level cloud: 90%
Most Significant Cloud Type: low
100%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
Tue 18
Dec
00:00

SSE
SSE

30 / 63 mph 48 / 39°F 80% 994 mb
Low level cloud: 53%
Mid level cloud: 44%
High level cloud: 88%
Most Significant Cloud Type: low
78%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
03:00

SSE
SSE

31 / 65 mph 48 / 38°F 82% 992 mb
Low level cloud: 52%
Mid level cloud: 70%
High level cloud: 92%
Most Significant Cloud Type: low
87%
Expect 0.02 In of precipitation over the past 3 hours.
0.02 In
06:00

SSW
SSW

18 / 37 mph 47 / 40°F 89% 991 mb
Low level cloud: 90%
Mid level cloud: 89%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.13 In of precipitation over the past 3 hours.
0.13 In
09:00

W
W

8 / 9 mph 47 / 44°F 82% 991 mb
Low level cloud: 58%
Mid level cloud: 84%
High level cloud: 100%
Most Significant Cloud Type: low
99%
Expect 0.21 In of precipitation over the past 3 hours.
0.21 In
12:00

S
S

12 / 14 mph 47 / 42°F 80% 991 mb
Low level cloud: 18%
Mid level cloud: 82%
High level cloud: 100%
Most Significant Cloud Type: medium
100%
Expect 0.10 In of precipitation over the past 3 hours.
0.10 In
15:00

SSW
SSW

14 / 16 mph 48 / 42°F 84% 991 mb
Low level cloud: 28%
Mid level cloud: 74%
High level cloud: 100%
Most Significant Cloud Type: low
65%
Expect 0.01 In of precipitation over the past 3 hours.
0.01 In
18:00

SSW
SSW

16 / 19 mph 48 / 41°F 83% 993 mb
Low level cloud: 33%
Mid level cloud: 45%
High level cloud: 35%
Most Significant Cloud Type: low
53%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
21:00

SSW
SSW

17 / 19 mph 47 / 40°F 85% 994 mb
Low level cloud: 10%
Mid level cloud: 11%
High level cloud: 0%
Most Significant Cloud Type: low
13%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
Wed 19
Dec
00:00

SSW
SSW

19 / 31 mph 43 / 35°F 80% 995 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: medium
3%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
03:00

SSW
SSW

22 / 31 mph 43 / 34°F 80% 995 mb
Low level cloud: 0%
Mid level cloud: 7%
High level cloud: 0%
Most Significant Cloud Type: medium
7%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
06:00

S
S

24 / 34 mph 43 / 34°F 80% 995 mb
Low level cloud: 1%
Mid level cloud: 90%
High level cloud: 83%
Most Significant Cloud Type: medium
96%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
09:00

S
S

26 / 37 mph 43 / 34°F 81% 995 mb
Low level cloud: 37%
Mid level cloud: 89%
High level cloud: 100%
Most Significant Cloud Type: low
79%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
12:00

SSW
SSW

25 / 40 mph 44 / 34°F 80% 995 mb
Low level cloud: 37%
Mid level cloud: 92%
High level cloud: 100%
Most Significant Cloud Type: low
81%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
15:00

SSW
SSW

24 / 42 mph 44 / 35°F 77% 994 mb
Low level cloud: 59%
Mid level cloud: 20%
High level cloud: 74%
Most Significant Cloud Type: low
75%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
18:00

SSW
SSW

26 / 46 mph 44 / 34°F 79% 995 mb
Low level cloud: 85%
Mid level cloud: 54%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.02 In of precipitation over the past 3 hours.
0.02 In
21:00

SSW
SSW

22 / 39 mph 43 / 35°F 82% 996 mb
Low level cloud: 60%
Mid level cloud: 55%
High level cloud: 100%
Most Significant Cloud Type: low
91%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
Thu 20
Dec
00:00

SSW
SSW

22 / 31 mph 45 / 36°F 82% 997 mb
Low level cloud: 18%
Mid level cloud: 85%
High level cloud: 100%
Most Significant Cloud Type: medium
100%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
03:00

SSW
SSW

20 / 26 mph 44 / 36°F 85% 996 mb
Low level cloud: 68%
Mid level cloud: 84%
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

SW
SW

20 / 33 mph 44 / 36°F 82% 995 mb
Low level cloud: 86%
Mid level cloud: 66%
High level cloud: 22%
Most Significant Cloud Type: low
100%
Expect 0.05 In of precipitation over the past 3 hours.
0.05 In
09:00

WSW
WSW

18 / 30 mph 45 / 37°F 80% 996 mb
Low level cloud: 21%
Mid level cloud: 44%
High level cloud: 49%
Most Significant Cloud Type: low
42%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
12:00

WSW
WSW

21 / 37 mph 46 / 37°F 78% 997 mb
Low level cloud: 59%
Mid level cloud: 80%
High level cloud: 32%
Most Significant Cloud Type: low
90%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
15:00

W
W

24 / 45 mph 46 / 37°F 77% 998 mb
Low level cloud: 31%
Mid level cloud: 8%
High level cloud: 0%
Most Significant Cloud Type: low
33%
Expect 0.02 In of precipitation over the past 3 hours.
0.02 In
18:00

W
W

19 / 35 mph 45 / 38°F 80% 1000 mb
Low level cloud: 27%
Mid level cloud: 5%
High level cloud: 7%
Most Significant Cloud Type: low
29%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
21:00

WSW
WSW

14 / 24 mph 45 / 38°F 83% 1001 mb
Low level cloud: 26%
Mid level cloud: 1%
High level cloud: 82%
Most Significant Cloud Type: low
36%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
Fri 21
Dec
00:00

SSW
SSW

12 / 17 mph 45 / 39°F 87% 1001 mb
Low level cloud: 12%
Mid level cloud: 31%
High level cloud: 83%
Most Significant Cloud Type: low
32%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
03:00

SSE
SSE

12 / 17 mph 44 / 38°F 84% 997 mb
Low level cloud: 1%
Mid level cloud: 82%
High level cloud: 90%
Most Significant Cloud Type: medium
88%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
06:00

SE
SE

13 / 19 mph 44 / 37°F 86% 994 mb
Low level cloud: 75%
Mid level cloud: 98%
High level cloud: 32%
Most Significant Cloud Type: low
100%
Expect 0.11 In of precipitation over the past 3 hours.
0.11 In
09:00

SE
SE

19 / 27 mph 45 / 37°F 91% 992 mb
Low level cloud: 90%
Mid level cloud: 70%
High level cloud: 5%
Most Significant Cloud Type: low
100%
Expect 0.17 In of precipitation over the past 3 hours.
0.17 In
12:00

SW
SW

25 / 44 mph 47 / 38°F 84% 993 mb
Low level cloud: 87%
Mid level cloud: 53%
High level cloud: 7%
Most Significant Cloud Type: low
100%
Expect 0.01 In of precipitation over the past 3 hours.
0.01 In
15:00

W
W

35 / 53 mph 48 / 38°F 81% 996 mb
Low level cloud: 84%
Mid level cloud: 46%
High level cloud: 99%
Most Significant Cloud Type: low
100%
Expect 0.02 In of precipitation over the past 3 hours.
0.02 In
18:00

W
W

16 / 24 mph 47 / 40°F 83% 997 mb
Low level cloud: 54%
Mid level cloud: 31%
High level cloud: 33%
Most Significant Cloud Type: low
68%
Expect 0.01 In of precipitation over the past 3 hours.
0.01 In
21:00

WSW
WSW

11 / 18 mph 46 / 40°F 79% 999 mb
Low level cloud: 18%
Mid level cloud: 18%
High level cloud: 96%
Most Significant Cloud Type: low
35%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
Sat 22
Dec
00:00

WSW
WSW

11 / 18 mph 45 / 40°F 84% 1002 mb
Low level cloud: 11%
Mid level cloud: 61%
High level cloud: 16%
Most Significant Cloud Type: medium
91%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
03:00

W
W

17 / 31 mph 45 / 38°F 78% 1004 mb
Low level cloud: 6%
Mid level cloud: 15%
High level cloud: 33%
Most Significant Cloud Type: low
14%
Expect 0.07 In of precipitation over the past 3 hours.
0.07 In
06:00

SW
SW

17 / 28 mph 45 / 38°F 80% 1005 mb
Low level cloud: 26%
Mid level cloud: 18%
High level cloud: 14%
Most Significant Cloud Type: low
34%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
09:00

SW
SW

20 / 31 mph 45 / 37°F 79% 1007 mb
Low level cloud: 46%
Mid level cloud: 26%
High level cloud: 11%
Most Significant Cloud Type: low
56%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
12:00

SW
SW

18 / 30 mph 45 / 38°F 79% 1009 mb
Low level cloud: 34%
Mid level cloud: 4%
High level cloud: 74%
Most Significant Cloud Type: low
43%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
15:00

SW
SW

14 / 23 mph 46 / 39°F 83% 1009 mb
Low level cloud: 22%
Mid level cloud: 15%
High level cloud: 22%
Most Significant Cloud Type: low
29%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
18:00

S
S

16 / 27 mph 45 / 38°F 87% 1009 mb
Low level cloud: 46%
Mid level cloud: 49%
High level cloud: 72%
Most Significant Cloud Type: low
71%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
21:00

S
S

16 / 28 mph 45 / 38°F 89% 1008 mb
Low level cloud: 66%
Mid level cloud: 57%
High level cloud: 77%
Most Significant Cloud Type: low
95%
Expect 0.01 In of precipitation over the past 3 hours.
0.01 In
Sun 23
Dec
00:00

S
S

16 / 28 mph 47 / 40°F 89% 1006 mb
Low level cloud: 52%
Mid level cloud: 76%
High level cloud: 92%
Most Significant Cloud Type: low
89%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
03:00

SSE
SSE

13 / 23 mph 46 / 40°F 93% 1002 mb
Low level cloud: 92%
Mid level cloud: 96%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.16 In of precipitation over the past 3 hours.
0.16 In
06:00

SSW
SSW

14 / 30 mph 45 / 38°F 91% 998 mb
Low level cloud: 41%
Mid level cloud: 85%
High level cloud: 97%
Most Significant Cloud Type: low
82%
Expect 0.11 In of precipitation over the past 3 hours.
0.11 In
09:00

SSW
SSW

13 / 26 mph 47 / 41°F 90% 997 mb
Low level cloud: 42%
Mid level cloud: 66%
High level cloud: 100%
Most Significant Cloud Type: low
76%
Expect 0.03 In of precipitation over the past 3 hours.
0.03 In
12:00

SW
SW

15 / 22 mph 49 / 43°F 88% 996 mb
Low level cloud: 29%
Mid level cloud: 53%
High level cloud: 0%
Most Significant Cloud Type: low
47%
Expect 0.04 In of precipitation over the past 3 hours.
0.04 In
15:00

SW
SW

20 / 27 mph 50 / 43°F 81% 995 mb
Low level cloud: 34%
Mid level cloud: 15%
High level cloud: 0%
Most Significant Cloud Type: low
38%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
18:00

WSW
WSW

23 / 26 mph 49 / 41°F 78% 995 mb
Low level cloud: 24%
Mid level cloud: 19%
High level cloud: 0%
Most Significant Cloud Type: low
30%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
21:00

WSW
WSW

23 / 28 mph 47 / 40°F 79% 996 mb
Low level cloud: 26%
Mid level cloud: 46%
High level cloud: 27%
Most Significant Cloud Type: low
45%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
DayLocal TimeDirSpeed/
Gust
Temp/
Feels Like
HumidityPressureCloud AmountPrecip AmountWeather
Mon 24
Dec
00:00

NNW
NNW

21 / 35 mph 45 / 36°F 73% 1005 mb
Low level cloud: 26%
Mid level cloud: 25%
High level cloud: 32%
Most Significant Cloud Type: low
38%
0.09 In
06:00

NW
NW

30 / 53 mph 46 / 36°F 78% 1004 mb
Low level cloud: 86%
Mid level cloud: 46%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.11 In
12:00

NW
NW

30 / 63 mph 44 / 34°F 79% 1005 mb
Low level cloud: 63%
Mid level cloud: 47%
High level cloud: 0%
Most Significant Cloud Type: low
79%
0.12 In
18:00

WNW
WNW

8 / 11 mph 45 / 41°F 76% 1013 mb
Low level cloud: 26%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: low
27%
0.00 In
Tue 25
Dec
00:00

NW
NW

18 / 30 mph 46 / 39°F 83% 1015 mb
Low level cloud: 43%
Mid level cloud: 11%
High level cloud: 79%
Most Significant Cloud Type: low
55%
0.03 In
06:00

WNW
WNW

16 / 25 mph 47 / 40°F 75% 1028 mb
Low level cloud: 28%
Mid level cloud: 31%
High level cloud: 97%
Most Significant Cloud Type: low
51%
0.02 In
12:00

W
W

16 / 24 mph 47 / 41°F 83% 1030 mb
Low level cloud: 90%
Mid level cloud: 76%
High level cloud: 16%
Most Significant Cloud Type: low
100%
0.02 In
18:00

WSW
WSW

19 / 30 mph 51 / 45°F 90% 1017 mb
Low level cloud: 89%
Mid level cloud: 78%
High level cloud: 71%
Most Significant Cloud Type: low
100%
0.05 In
Wed 26
Dec
00:00

WSW
WSW

11 / 21 mph 43 / 37°F 82% 1032 mb
Low level cloud: 82%
Mid level cloud: 8%
High level cloud: 13%
Most Significant Cloud Type: low
86%
0.00 In
06:00

WSW
WSW

15 / 30 mph 48 / 42°F 90% 1023 mb
Low level cloud: 85%
Mid level cloud: 55%
High level cloud: 15%
Most Significant Cloud Type: low
100%
0.01 In
12:00

SSW
SSW

14 / 17 mph 46 / 39°F 82% 1032 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 6%
Most Significant Cloud Type: medium
3%
0.00 In
18:00

SSW
SSW

19 / 22 mph 51 / 45°F 82% 1024 mb
Low level cloud: 51%
Mid level cloud: 32%
High level cloud: 35%
Most Significant Cloud Type: low
66%
0.00 In
Thu 27
Dec
00:00

SSW
SSW

16 / 23 mph 43 / 36°F 88% 1031 mb
Low level cloud: 18%
Mid level cloud: 27%
High level cloud: 20%
Most Significant Cloud Type: low
29%
0.00 In
06:00

SSW
SSW

21 / 42 mph 46 / 39°F 83% 1020 mb
Low level cloud: 78%
Mid level cloud: 14%
High level cloud: 46%
Most Significant Cloud Type: low
88%
0.00 In
12:00

SSW
SSW

14 / 21 mph 46 / 40°F 89% 1030 mb
Low level cloud: 51%
Mid level cloud: 31%
High level cloud: 38%
Most Significant Cloud Type: low
66%
0.00 In
18:00

WNW
WNW

17 / 19 mph 51 / 45°F 77% 1022 mb
Low level cloud: 55%
Mid level cloud: 18%
High level cloud: 31%
Most Significant Cloud Type: low
65%
0.08 In
Fri 28
Dec
00:00

SSW
SSW

13 / 22 mph 43 / 37°F 90% 1030 mb
Low level cloud: 24%
Mid level cloud: 69%
High level cloud: 43%
Most Significant Cloud Type: low
53%
0.03 In
06:00

SW
SW

7 / 15 mph 38 / 32°F 77% 1028 mb
Low level cloud: 17%
Mid level cloud: 3%
High level cloud: 16%
Most Significant Cloud Type: low
19%
0.00 In
12:00

S
S

14 / 18 mph 47 / 41°F 87% 1028 mb
Low level cloud: 53%
Mid level cloud: 68%
High level cloud: 32%
Most Significant Cloud Type: low
80%
0.03 In
18:00

SW
SW

8 / 9 mph 43 / 38°F 83% 1031 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 3%
Most Significant Cloud Type: medium
2%
0.00 In
Sat 29
Dec
00:00

S
S

16 / 28 mph 44 / 37°F 86% 1024 mb
Low level cloud: 26%
Mid level cloud: 60%
High level cloud: 55%
Most Significant Cloud Type: low
53%
0.01 In
06:00

SSE
SSE

10 / 17 mph 36 / 29°F 82% 1031 mb
Low level cloud: 0%
Mid level cloud: 21%
High level cloud: 43%
Most Significant Cloud Type: medium
22%
0.00 In
12:00

WSW
WSW

13 / 20 mph 46 / 40°F 88% 1020 mb
Low level cloud: 59%
Mid level cloud: 46%
High level cloud: 46%
Most Significant Cloud Type: low
80%
0.24 In
18:00

S
S

15 / 26 mph 47 / 41°F 90% 1027 mb
Low level cloud: 10%
Mid level cloud: 50%
High level cloud: 58%
Most Significant Cloud Type: medium
80%
0.14 In
Sun 30
Dec
00:00

NW
NW

20 / 30 mph 42 / 34°F 72% 1030 mb
Low level cloud: 32%
Mid level cloud: 27%
High level cloud: 0%
Most Significant Cloud Type: low
40%
0.04 In
06:00

S
S

17 / 28 mph 47 / 41°F 81% 1025 mb
Low level cloud: 0%
Mid level cloud: 44%
High level cloud: 62%
Most Significant Cloud Type: medium
46%
0.00 In
12:00

W
W

8 / 11 mph 41 / 36°F 71% 1042 mb
Low level cloud: 10%
Mid level cloud: 7%
High level cloud: 52%
Most Significant Cloud Type: low
18%
0.03 In
18:00

S
S

16 / 27 mph 50 / 45°F 88% 1019 mb
Low level cloud: 49%
Mid level cloud: 45%
High level cloud: 41%
Most Significant Cloud Type: low
69%
0.02 In
Mon 31
Dec
00:00

SSW
SSW

18 / 27 mph 38 / 29°F 83% 1040 mb
Low level cloud: 46%
Mid level cloud: 9%
High level cloud: 46%
Most Significant Cloud Type: low
55%
0.00 In
06:00

NNW
NNW

21 / 32 mph 41 / 32°F 70% 1032 mb
Low level cloud: 10%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: low
11%
0.15 In
12:00

SW
SW

23 / 35 mph 47 / 38°F 82% 1033 mb
Low level cloud: 62%
Mid level cloud: 44%
High level cloud: 41%
Most Significant Cloud Type: low
82%
0.01 In
18:00

NW
NW

13 / 21 mph 41 / 33°F 72% 1041 mb
Low level cloud: 9%
Mid level cloud: 37%
High level cloud: 37%
Most Significant Cloud Type: medium
62%
0.03 In
Tue 01
Jan
00:00

W
W

10 / 15 mph 50 / 46°F 94% 1033 mb
Low level cloud: 71%
Mid level cloud: 48%
High level cloud: 12%
Most Significant Cloud Type: low
89%
0.16 In
06:00

SW
SW

16 / 24 mph 39 / 30°F 82% 1036 mb
Low level cloud: 34%
Mid level cloud: 42%
High level cloud: 51%
Most Significant Cloud Type: low
54%
0.00 In
12:00

SW
SW

7 / 10 mph 48 / 44°F 91% 1037 mb
Low level cloud: 38%
Mid level cloud: 26%
High level cloud: 13%
Most Significant Cloud Type: low
48%
0.08 In
18:00

WSW
WSW

22 / 35 mph 49 / 42°F 89% 1022 mb
Low level cloud: 84%
Mid level cloud: 49%
High level cloud: 51%
Most Significant Cloud Type: low
100%
0.11 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