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Gwrhay 14 Day Long Range Forecast

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

Caerffili (Caerphilly), United Kingdom

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

The outlook for Gwrhay in the two weeks ahead shows the average daytime maximum temperature will be around 15°C, with a high for the two weeks of 17°C expected on the afternoon of Sunday 30th. The mean minimum temperature will be 7°C, dipping to its lowest on the morning of Tuesday 25th at 4°C. Expect the coming 14 days to have some days seeing a little precipitation and some days with rain. Current predictions suggest Sunday 23rd will have the most precipitation with an accumulation of around 20.0mm. On the whole winds are likely to be moderate. The strongest wind will be felt on the evening of Sunday 23rd, coming from a northerly direction, and reaching around 31mph.

DayLocal TimeDirSpeed/
Gust
Temp/
Feels Like
HumidityPressureCloud AmountPrecip AmountWeather
Fri 21
Sep
09:00

W
W

25 / 33 mph 52 / 46°F 70% 1009 mb
Low level cloud: 20%
Mid level cloud: 14%
High level cloud: 0%
Most Significant Cloud Type: low
25%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
12:00

W
W

30 / 38 mph 56 / 49°F 67% 1011 mb
Low level cloud: 32%
Mid level cloud: 23%
High level cloud: 0%
Most Significant Cloud Type: low
40%
Expect 0.01 In of precipitation over the past 3 hours.
0.01 In
15:00

W
W

26 / 33 mph 56 / 50°F 70% 1012 mb
Low level cloud: 15%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: low
17%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
18:00

W
W

18 / 29 mph 52 / 47°F 77% 1014 mb
Low level cloud: 8%
Mid level cloud: 3%
High level cloud: 12%
Most Significant Cloud Type: low
10%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
21:00

W
W

11 / 19 mph 50 / 46°F 82% 1017 mb
Low level cloud: 3%
Mid level cloud: 2%
High level cloud: 92%
Most Significant Cloud Type: medium
15%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
Sat 22
Sep
00:00

W
W

10 / 15 mph 50 / 46°F 85% 1019 mb
Low level cloud: 2%
Mid level cloud: 6%
High level cloud: 59%
Most Significant Cloud Type: medium
13%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
03:00

W
W

9 / 14 mph 49 / 45°F 81% 1020 mb
Low level cloud: 0%
Mid level cloud: 40%
High level cloud: 92%
Most Significant Cloud Type: medium
43%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
06:00

W
W

6 / 11 mph 48 / 45°F 82% 1020 mb
Low level cloud: 6%
Mid level cloud: 77%
High level cloud: 96%
Most Significant Cloud Type: medium
96%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
09:00

W
W

6 / 11 mph 50 / 48°F 77% 1021 mb
Low level cloud: 23%
Mid level cloud: 77%
High level cloud: 87%
Most Significant Cloud Type: medium
100%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
12:00

SW
SW

8 / 12 mph 54 / 51°F 77% 1021 mb
Low level cloud: 42%
Mid level cloud: 73%
High level cloud: 19%
Most Significant Cloud Type: low
69%
Expect 0.01 In of precipitation over the past 3 hours.
0.01 In
15:00

S
S

6 / 7 mph 56 / 53°F 88% 1019 mb
Low level cloud: 35%
Mid level cloud: 80%
High level cloud: 85%
Most Significant Cloud Type: low
73%
Expect 0.04 In of precipitation over the past 3 hours.
0.04 In
18:00

ESE
ESE

9 / 10 mph 54 / 51°F 94% 1017 mb
Low level cloud: 58%
Mid level cloud: 92%
High level cloud: 89%
Most Significant Cloud Type: low
100%
Expect 0.20 In of precipitation over the past 3 hours.
0.20 In
21:00

E
E

15 / 18 mph 51 / 46°F 96% 1015 mb
Low level cloud: 97%
Mid level cloud: 92%
High level cloud: 6%
Most Significant Cloud Type: low
100%
Expect 0.14 In of precipitation over the past 3 hours.
0.14 In
Sun 23
Sep
00:00

E
E

13 / 19 mph 51 / 46°F 97% 1012 mb
Low level cloud: 92%
Mid level cloud: 54%
High level cloud: 41%
Most Significant Cloud Type: low
100%
Expect 0.13 In of precipitation over the past 3 hours.
0.13 In
03:00

ENE
ENE

8 / 12 mph 51 / 48°F 98% 1009 mb
Low level cloud: 93%
Mid level cloud: 79%
High level cloud: 87%
Most Significant Cloud Type: low
100%
Expect 0.28 In of precipitation over the past 3 hours.
0.28 In
06:00

SW
SW

9 / 16 mph 58 / 56°F 98% 1007 mb
Low level cloud: 92%
Mid level cloud: 74%
High level cloud: 7%
Most Significant Cloud Type: low
100%
Expect 0.19 In of precipitation over the past 3 hours.
0.19 In
09:00

WSW
WSW

20 / 32 mph 62 / 62°F 96% 1005 mb
Low level cloud: 90%
Mid level cloud: 73%
High level cloud: 8%
Most Significant Cloud Type: low
100%
Expect 0.06 In of precipitation over the past 3 hours.
0.06 In
12:00

WSW
WSW

26 / 41 mph 61 / 61°F 93% 1003 mb
Low level cloud: 85%
Mid level cloud: 65%
High level cloud: 47%
Most Significant Cloud Type: low
100%
Expect 0.05 In of precipitation over the past 3 hours.
0.05 In
15:00

WNW
WNW

24 / 32 mph 57 / 52°F 87% 1004 mb
Low level cloud: 51%
Mid level cloud: 24%
High level cloud: 0%
Most Significant Cloud Type: low
59%
Expect 0.08 In of precipitation over the past 3 hours.
0.08 In
18:00

N
N

31 / 44 mph 47 / 38°F 80% 1013 mb
Low level cloud: 52%
Mid level cloud: 11%
High level cloud: 0%
Most Significant Cloud Type: low
56%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
21:00

N
N

19 / 31 mph 45 / 37°F 79% 1022 mb
Low level cloud: 12%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: low
13%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
Mon 24
Sep
00:00

NNW
NNW

13 / 21 mph 45 / 39°F 78% 1028 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 3%
Most Significant Cloud Type: medium
2%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
03:00

NNW
NNW

9 / 16 mph 44 / 39°F 79% 1032 mb
Low level cloud: 0%
Mid level cloud: 1%
High level cloud: 0%
Most Significant Cloud Type: high
0%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
06:00

NW
NW

6 / 13 mph 42 / 38°F 81% 1035 mb
Low level cloud: 0%
Mid level cloud: 1%
High level cloud: 1%
Most Significant Cloud Type: high
1%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
09:00

N
N

8 / 11 mph 51 / 47°F 73% 1038 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
12:00

N
N

7 / 8 mph 56 / 53°F 60% 1039 mb
Low level cloud: 20%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
20%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
15:00

N
N

7 / 9 mph 56 / 53°F 60% 1039 mb
Low level cloud: 7%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
7%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
18:00

NNE
NNE

4 / 8 mph 52 / 50°F 73% 1039 mb
Low level cloud: 7%
Mid level cloud: 0%
High level cloud: 6%
Most Significant Cloud Type: low
7%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
21:00

NE
NE

6 / 10 mph 47 / 44°F 85% 1041 mb
Low level cloud: 8%
Mid level cloud: 0%
High level cloud: 50%
Most Significant Cloud Type: low
14%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
Tue 25
Sep
00:00

NE
NE

6 / 12 mph 44 / 40°F 89% 1041 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 32%
Most Significant Cloud Type: high
32%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
03:00

NE
NE

5 / 10 mph 43 / 40°F 89% 1040 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 9%
Most Significant Cloud Type: high
8%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
06:00

ENE
ENE

4 / 8 mph 41 / 38°F 89% 1040 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
09:00

E
E

5 / 6 mph 49 / 46°F 74% 1040 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
12:00

SSE
SSE

7 / 8 mph 56 / 53°F 57% 1038 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
15:00

SSE
SSE

4 / 5 mph 58 / 57°F 54% 1036 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
18:00

E
E

4 / 5 mph 58 / 57°F 65% 1034 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
21:00

ESE
ESE

4 / 8 mph 50 / 48°F 73% 1034 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
Wed 26
Sep
00:00

E
E

4 / 8 mph 46 / 44°F 86% 1033 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
03:00

E
E

5 / 10 mph 45 / 42°F 90% 1032 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
06:00

ENE
ENE

5 / 10 mph 43 / 40°F 92% 1030 mb
Low level cloud: 7%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
6%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
09:00

E
E

7 / 9 mph 52 / 49°F 81% 1029 mb
Low level cloud: 3%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
2%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
12:00

SE
SE

8 / 9 mph 60 / 60°F 67% 1028 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
15:00

SSE
SSE

7 / 9 mph 63 / 62°F 64% 1026 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
18:00

S
S

4 / 6 mph 62 / 61°F 81% 1025 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
21:00

SW
SW

3 / 4 mph 54 / 55°F 88% 1026 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
Thu 27
Sep
00:00

WSW
WSW

3 / 7 mph 50 / 49°F 90% 1025 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
03:00

WSW
WSW

4 / 10 mph 48 / 46°F 92% 1023 mb
Low level cloud: 6%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
6%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
06:00

W
W

7 / 15 mph 48 / 45°F 92% 1023 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
09:00

W
W

12 / 16 mph 56 / 53°F 78% 1023 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: medium
3%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
12:00

W
W

15 / 19 mph 61 / 61°F 85% 1024 mb
Low level cloud: 86%
Mid level cloud: 30%
High level cloud: 0%
Most Significant Cloud Type: low
96%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
15:00

NNW
NNW

14 / 19 mph 58 / 55°F 85% 1025 mb
Low level cloud: 69%
Mid level cloud: 46%
High level cloud: 19%
Most Significant Cloud Type: low
86%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
18:00

N
N

11 / 17 mph 52 / 48°F 83% 1028 mb
Low level cloud: 6%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
6%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
21:00

NNW
NNW

9 / 16 mph 47 / 43°F 87% 1031 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 13%
Most Significant Cloud Type: high
13%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
DayLocal TimeDirSpeed/
Gust
Temp/
Feels Like
HumidityPressureCloud AmountPrecip AmountWeather
Fri 28
Sep
00:00

NNE
NNE

11 / 19 mph 47 / 42°F 72% 1020 mb
Low level cloud: 69%
Mid level cloud: 46%
High level cloud: 22%
Most Significant Cloud Type: low
88%
0.00 In
06:00

NE
NE

1 / 2 mph 52 / 52°F 88% 1019 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 6%
Most Significant Cloud Type: high
6%
0.00 In
12:00

WNW
WNW

6 / 8 mph 59 / 58°F 60% 1032 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 12%
Most Significant Cloud Type: high
12%
0.00 In
18:00

W
W

9 / 16 mph 56 / 54°F 90% 1015 mb
Low level cloud: 0%
Mid level cloud: 14%
High level cloud: 92%
Most Significant Cloud Type: medium
17%
0.00 In
Sat 29
Sep
00:00

NW
NW

3 / 4 mph 51 / 51°F 88% 1031 mb
Low level cloud: 0%
Mid level cloud: 7%
High level cloud: 0%
Most Significant Cloud Type: medium
6%
0.00 In
06:00

WSW
WSW

17 / 25 mph 57 / 53°F 93% 1011 mb
Low level cloud: 91%
Mid level cloud: 45%
High level cloud: 90%
Most Significant Cloud Type: low
100%
0.03 In
12:00

WNW
WNW

9 / 10 mph 58 / 57°F 71% 1029 mb
Low level cloud: 7%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: low
8%
0.00 In
18:00

W
W

10 / 18 mph 54 / 51°F 87% 1014 mb
Low level cloud: 26%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
26%
0.01 In
Sun 30
Sep
00:00

WNW
WNW

5 / 8 mph 51 / 49°F 86% 1028 mb
Low level cloud: 63%
Mid level cloud: 56%
High level cloud: 68%
Most Significant Cloud Type: low
90%
0.00 In
06:00

SW
SW

22 / 32 mph 59 / 55°F 93% 1009 mb
Low level cloud: 88%
Mid level cloud: 50%
High level cloud: 47%
Most Significant Cloud Type: low
100%
0.06 In
12:00

WNW
WNW

11 / 13 mph 60 / 60°F 73% 1027 mb
Low level cloud: 7%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
6%
0.00 In
18:00

W
W

20 / 32 mph 54 / 49°F 71% 1011 mb
Low level cloud: 44%
Mid level cloud: 8%
High level cloud: 0%
Most Significant Cloud Type: low
47%
0.10 In
Mon 01
Oct
00:00

NW
NW

8 / 11 mph 48 / 45°F 92% 1028 mb
Low level cloud: 3%
Mid level cloud: 4%
High level cloud: 45%
Most Significant Cloud Type: medium
15%
0.00 In
06:00

W
W

19 / 35 mph 47 / 40°F 80% 1011 mb
Low level cloud: 33%
Mid level cloud: 46%
High level cloud: 0%
Most Significant Cloud Type: low
49%
0.04 In
12:00

NW
NW

17 / 26 mph 54 / 49°F 76% 1028 mb
Low level cloud: 65%
Mid level cloud: 0%
High level cloud: 38%
Most Significant Cloud Type: low
69%
0.01 In
18:00

W
W

19 / 30 mph 54 / 49°F 67% 1011 mb
Low level cloud: 2%
Mid level cloud: 43%
High level cloud: 0%
Most Significant Cloud Type: medium
49%
0.11 In
Tue 02
Oct
00:00

NNW
NNW

9 / 15 mph 49 / 45°F 90% 1031 mb
Low level cloud: 7%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: low
8%
0.00 In
06:00

WSW
WSW

14 / 24 mph 42 / 35°F 79% 1009 mb
Low level cloud: 2%
Mid level cloud: 18%
High level cloud: 0%
Most Significant Cloud Type: medium
22%
0.17 In
12:00

NW
NW

8 / 10 mph 57 / 55°F 70% 1034 mb
Low level cloud: 29%
Mid level cloud: 17%
High level cloud: 0%
Most Significant Cloud Type: low
34%
0.00 In
18:00

WSW
WSW

9 / 15 mph 49 / 46°F 80% 1005 mb
Low level cloud: 9%
Mid level cloud: 24%
High level cloud: 0%
Most Significant Cloud Type: low
17%
0.11 In
Wed 03
Oct
00:00

W
W

9 / 13 mph 55 / 52°F 96% 1033 mb
Low level cloud: 54%
Mid level cloud: 4%
High level cloud: 10%
Most Significant Cloud Type: low
57%
0.00 In
06:00

NE
NE

9 / 15 mph 39 / 33°F 95% 1004 mb
Low level cloud: 20%
Mid level cloud: 23%
High level cloud: 15%
Most Significant Cloud Type: low
30%
0.01 In
12:00

W
W

12 / 14 mph 58 / 55°F 81% 1030 mb
Low level cloud: 68%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
68%
0.01 In
18:00

NNE
NNE

9 / 17 mph 46 / 41°F 73% 1009 mb
Low level cloud: 0%
Mid level cloud: 19%
High level cloud: 2%
Most Significant Cloud Type: medium
19%
0.00 In
Thu 04
Oct
00:00

W
W

7 / 10 mph 52 / 49°F 94% 1028 mb
Low level cloud: 27%
Mid level cloud: 1%
High level cloud: 0%
Most Significant Cloud Type: low
27%
0.00 In
06:00

NNW
NNW

7 / 11 mph 42 / 37°F 91% 1012 mb
Low level cloud: 1%
Mid level cloud: 1%
High level cloud: 7%
Most Significant Cloud Type: low
2%
0.00 In
12:00

WSW
WSW

4 / 4 mph 65 / 65°F 69% 1026 mb
Low level cloud: 7%
Mid level cloud: 7%
High level cloud: 0%
Most Significant Cloud Type: low
9%
0.00 In
18:00

N
N

8 / 14 mph 49 / 46°F 79% 1015 mb
Low level cloud: 6%
Mid level cloud: 10%
High level cloud: 3%
Most Significant Cloud Type: low
9%
0.00 In
Fri 05
Oct
00:00

WNW
WNW

3 / 3 mph 57 / 58°F 92% 1023 mb
Low level cloud: 16%
Mid level cloud: 5%
High level cloud: 19%
Most Significant Cloud Type: low
19%
0.00 In
06:00

NNE
NNE

10 / 19 mph 39 / 32°F 91% 1021 mb
Low level cloud: 5%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: low
5%
0.00 In
12:00

WNW
WNW

9 / 12 mph 58 / 56°F 72% 1023 mb
Low level cloud: 58%
Mid level cloud: 4%
High level cloud: 34%
Most Significant Cloud Type: low
63%
0.00 In
18:00

WNW
WNW

3 / 3 mph 53 / 53°F 63% 1023 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 38%
Most Significant Cloud Type: medium
4%
0.00 In
Sat 06
Oct
00:00

W
W

6 / 9 mph 53 / 51°F 93% 1026 mb
Low level cloud: 15%
Mid level cloud: 7%
High level cloud: 13%
Most Significant Cloud Type: low
18%
0.00 In
12:00

WNW
WNW

6 / 7 mph 60 / 60°F 72% 1029 mb
Low level cloud: 40%
Mid level cloud: 3%
High level cloud: 13%
Most Significant Cloud Type: low
42%
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