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Cefn Berain 14 Day Long Range Forecast

14 Day weather providing an extended long range forecast outlook for Cefn Berain

Denbighshire, United Kingdom

Long range weather outlook for Cefn Berain includes 14 day forecast summary:

The next 14 day outlook for Cefn Berain shows the average daytime maximum temperature will be around 15°C, with a high for the two weeks of 19°C expected on the afternoon of Thursday 27th. The average minimum temperature will be 8°C, dipping to its lowest on the morning of Tuesday 25th at 6°C. The next 14 days will have some days seeing a little precipitation and some days with rain. It looks like Sunday 23rd will have the most precipitation with an accumulation of around 31.0mm. On the whole winds are likely to be moderate. The strongest wind will be felt on the afternoon of Sunday 23rd, coming from a northerly direction, and reaching around 38mph.

DayLocal TimeDirSpeed/
Gust
Temp/
Feels Like
HumidityPressureCloud AmountPrecip AmountWeather
Wed 19
Sep
15:00

WSW
WSW

23 / 26 mph 61 / 60°F 60% 1006 mb
Low level cloud: 1%
Mid level cloud: 7%
High level cloud: 88%
Most Significant Cloud Type: medium
13%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
18:00

WSW
WSW

15 / 21 mph 55 / 51°F 64% 1009 mb
Low level cloud: 22%
Mid level cloud: 43%
High level cloud: 100%
Most Significant Cloud Type: low
49%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
21:00

WSW
WSW

13 / 20 mph 52 / 48°F 66% 1011 mb
Low level cloud: 13%
Mid level cloud: 75%
High level cloud: 100%
Most Significant Cloud Type: medium
100%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
Thu 20
Sep
00:00

SW
SW

11 / 16 mph 50 / 46°F 87% 1011 mb
Low level cloud: 32%
Mid level cloud: 84%
High level cloud: 78%
Most Significant Cloud Type: low
71%
Expect 0.01 In of precipitation over the past 3 hours.
0.01 In
03:00

SW
SW

5 / 7 mph 49 / 47°F 94% 1010 mb
Low level cloud: 36%
Mid level cloud: 72%
High level cloud: 3%
Most Significant Cloud Type: low
61%
Expect 0.05 In of precipitation over the past 3 hours.
0.05 In
06:00

SSW
SSW

2 / 3 mph 49 / 49°F 95% 1009 mb
Low level cloud: 39%
Mid level cloud: 75%
High level cloud: 70%
Most Significant Cloud Type: low
73%
Expect 0.05 In of precipitation over the past 3 hours.
0.05 In
09:00

SSE
SSE

3 / 3 mph 54 / 53°F 92% 1009 mb
Low level cloud: 26%
Mid level cloud: 71%
High level cloud: 88%
Most Significant Cloud Type: low
61%
Expect 0.01 In of precipitation over the past 3 hours.
0.01 In
12:00

SE
SE

5 / 6 mph 59 / 58°F 78% 1006 mb
Low level cloud: 68%
Mid level cloud: 68%
High level cloud: 97%
Most Significant Cloud Type: low
100%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
15:00

E
E

8 / 9 mph 53 / 51°F 96% 1002 mb
Low level cloud: 92%
Mid level cloud: 84%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.19 In of precipitation over the past 3 hours.
0.19 In
18:00

SSW
SSW

13 / 23 mph 59 / 59°F 95% 995 mb
Low level cloud: 84%
Mid level cloud: 61%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.42 In of precipitation over the past 3 hours.
0.42 In
21:00

SW
SW

17 / 28 mph 59 / 59°F 91% 992 mb
Low level cloud: 60%
Mid level cloud: 38%
High level cloud: 5%
Most Significant Cloud Type: low
73%
Expect 0.01 In of precipitation over the past 3 hours.
0.01 In
Fri 21
Sep
00:00

WNW
WNW

21 / 25 mph 50 / 43°F 91% 994 mb
Low level cloud: 89%
Mid level cloud: 68%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.04 In of precipitation over the past 3 hours.
0.04 In
03:00

W
W

20 / 27 mph 48 / 41°F 82% 1000 mb
Low level cloud: 89%
Mid level cloud: 20%
High level cloud: 0%
Most Significant Cloud Type: low
96%
Expect 0.01 In of precipitation over the past 3 hours.
0.01 In
06:00

W
W

18 / 27 mph 47 / 40°F 74% 1003 mb
Low level cloud: 10%
Mid level cloud: 17%
High level cloud: 0%
Most Significant Cloud Type: low
16%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
09:00

WSW
WSW

12 / 17 mph 46 / 40°F 94% 1004 mb
Low level cloud: 95%
Mid level cloud: 80%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.06 In of precipitation over the past 3 hours.
0.06 In
12:00

W
W

21 / 30 mph 51 / 44°F 84% 1007 mb
Low level cloud: 89%
Mid level cloud: 47%
High level cloud: 15%
Most Significant Cloud Type: low
100%
Expect 0.04 In of precipitation over the past 3 hours.
0.04 In
15:00

W
W

21 / 25 mph 57 / 52°F 66% 1010 mb
Low level cloud: 46%
Mid level cloud: 19%
High level cloud: 0%
Most Significant Cloud Type: low
52%
Expect 0.01 In of precipitation over the past 3 hours.
0.01 In
18:00

W
W

16 / 25 mph 51 / 45°F 68% 1013 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
21:00

W
W

13 / 23 mph 48 / 42°F 74% 1016 mb
Low level cloud: 22%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: low
22%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
Sat 22
Sep
00:00

W
W

11 / 20 mph 47 / 41°F 74% 1018 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
03:00

W
W

12 / 21 mph 46 / 40°F 77% 1019 mb
Low level cloud: 16%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: low
17%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
06:00

W
W

11 / 20 mph 45 / 39°F 77% 1021 mb
Low level cloud: 28%
Mid level cloud: 5%
High level cloud: 20%
Most Significant Cloud Type: low
31%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
09:00

W
W

13 / 14 mph 53 / 49°F 64% 1022 mb
Low level cloud: 7%
Mid level cloud: 2%
High level cloud: 67%
Most Significant Cloud Type: medium
24%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
12:00

W
W

10 / 12 mph 57 / 54°F 58% 1022 mb
Low level cloud: 23%
Mid level cloud: 1%
High level cloud: 81%
Most Significant Cloud Type: low
32%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
15:00

WSW
WSW

7 / 9 mph 57 / 55°F 59% 1021 mb
Low level cloud: 0%
Mid level cloud: 43%
High level cloud: 77%
Most Significant Cloud Type: medium
46%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
18:00

SSW
SSW

3 / 6 mph 47 / 45°F 72% 1020 mb
Low level cloud: 0%
Mid level cloud: 56%
High level cloud: 73%
Most Significant Cloud Type: medium
58%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
21:00

SSE
SSE

5 / 11 mph 45 / 42°F 84% 1019 mb
Low level cloud: 0%
Mid level cloud: 69%
High level cloud: 92%
Most Significant Cloud Type: medium
72%
Expect 0.02 In of precipitation over the past 3 hours.
0.02 In
Sun 23
Sep
00:00

ESE
ESE

13 / 18 mph 46 / 40°F 97% 1013 mb
Low level cloud: 91%
Mid level cloud: 86%
High level cloud: 97%
Most Significant Cloud Type: low
100%
Expect 0.26 In of precipitation over the past 3 hours.
0.26 In
03:00

SE
SE

19 / 27 mph 48 / 41°F 96% 1003 mb
Low level cloud: 91%
Mid level cloud: 92%
High level cloud: 33%
Most Significant Cloud Type: low
100%
Expect 0.25 In of precipitation over the past 3 hours.
0.25 In
06:00

SSE
SSE

15 / 27 mph 58 / 55°F 97% 993 mb
Low level cloud: 80%
Mid level cloud: 64%
High level cloud: 80%
Most Significant Cloud Type: low
100%
Expect 0.24 In of precipitation over the past 3 hours.
0.24 In
09:00

SSW
SSW

19 / 34 mph 60 / 59°F 91% 982 mb
Low level cloud: 58%
Mid level cloud: 61%
High level cloud: 0%
Most Significant Cloud Type: low
79%
Expect 0.24 In of precipitation over the past 3 hours.
0.24 In
12:00

WNW
WNW

6 / 9 mph 56 / 55°F 96% 981 mb
Low level cloud: 77%
Mid level cloud: 43%
High level cloud: 0%
Most Significant Cloud Type: low
91%
Expect 0.09 In of precipitation over the past 3 hours.
0.09 In
15:00

NNW
NNW

38 / 47 mph 49 / 40°F 89% 992 mb
Low level cloud: 96%
Mid level cloud: 95%
High level cloud: 21%
Most Significant Cloud Type: low
100%
Expect 0.09 In of precipitation over the past 3 hours.
0.09 In
18:00

NNW
NNW

29 / 40 mph 49 / 40°F 75% 1010 mb
Low level cloud: 94%
Mid level cloud: 44%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.05 In of precipitation over the past 3 hours.
0.05 In
21:00

NNW
NNW

22 / 28 mph 50 / 43°F 60% 1019 mb
Low level cloud: 17%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: low
18%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
Mon 24
Sep
00:00

NNW
NNW

16 / 26 mph 47 / 41°F 57% 1025 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 3%
Most Significant Cloud Type: high
2%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
03:00

NNW
NNW

13 / 22 mph 47 / 41°F 64% 1029 mb
Low level cloud: 0%
Mid level cloud: 7%
High level cloud: 3%
Most Significant Cloud Type: medium
6%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
06:00

NW
NW

8 / 17 mph 44 / 39°F 84% 1033 mb
Low level cloud: 62%
Mid level cloud: 37%
High level cloud: 7%
Most Significant Cloud Type: low
76%
Expect 0.01 In of precipitation over the past 3 hours.
0.01 In
09:00

NW
NW

11 / 13 mph 52 / 48°F 83% 1035 mb
Low level cloud: 33%
Mid level cloud: 9%
High level cloud: 0%
Most Significant Cloud Type: low
35%
Expect 0.02 In of precipitation over the past 3 hours.
0.02 In
12:00

NW
NW

11 / 13 mph 57 / 53°F 63% 1036 mb
Low level cloud: 14%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: low
15%
Expect 0.01 In of precipitation over the past 3 hours.
0.01 In
15:00

WNW
WNW

10 / 12 mph 57 / 53°F 65% 1036 mb
Low level cloud: 25%
Mid level cloud: 0%
High level cloud: 3%
Most Significant Cloud Type: low
25%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
18:00

WNW
WNW

7 / 13 mph 47 / 43°F 78% 1037 mb
Low level cloud: 9%
Mid level cloud: 0%
High level cloud: 15%
Most Significant Cloud Type: low
10%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
21:00

WSW
WSW

6 / 12 mph 45 / 42°F 83% 1038 mb
Low level cloud: 6%
Mid level cloud: 1%
High level cloud: 3%
Most Significant Cloud Type: low
6%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
Tue 25
Sep
00:00

WSW
WSW

6 / 14 mph 42 / 38°F 84% 1038 mb
Low level cloud: 1%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: medium
8%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
03:00

WSW
WSW

6 / 13 mph 43 / 39°F 88% 1037 mb
Low level cloud: 9%
Mid level cloud: 4%
High level cloud: 33%
Most Significant Cloud Type: low
14%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
06:00

SW
SW

6 / 12 mph 43 / 39°F 91% 1037 mb
Low level cloud: 1%
Mid level cloud: 3%
High level cloud: 17%
Most Significant Cloud Type: medium
6%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
09:00

SW
SW

6 / 6 mph 55 / 53°F 76% 1036 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 19%
Most Significant Cloud Type: medium
2%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
12:00

SW
SW

6 / 6 mph 61 / 60°F 64% 1035 mb
Low level cloud: 73%
Mid level cloud: 1%
High level cloud: 14%
Most Significant Cloud Type: low
74%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
15:00

SW
SW

6 / 7 mph 62 / 60°F 64% 1032 mb
Low level cloud: 2%
Mid level cloud: 5%
High level cloud: 80%
Most Significant Cloud Type: medium
13%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
18:00

SW
SW

6 / 13 mph 49 / 46°F 81% 1031 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 19%
Most Significant Cloud Type: high
18%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
21:00

SSW
SSW

7 / 15 mph 47 / 43°F 85% 1031 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 5%
Most Significant Cloud Type: high
5%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
DayLocal TimeDirSpeed/
Gust
Temp/
Feels Like
HumidityPressureCloud AmountPrecip AmountWeather
Wed 26
Sep
00:00

WNW
WNW

17 / 23 mph 53 / 48°F 84% 1019 mb
Low level cloud: 86%
Mid level cloud: 20%
High level cloud: 3%
Most Significant Cloud Type: low
93%
0.02 In
06:00

SSE
SSE

2 / 4 mph 51 / 52°F 97% 1029 mb
Low level cloud: 74%
Mid level cloud: 45%
High level cloud: 10%
Most Significant Cloud Type: low
100%
0.00 In
12:00

SSW
SSW

4 / 4 mph 69 / 69°F 62% 1029 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 7%
Most Significant Cloud Type: medium
5%
0.00 In
18:00

NNW
NNW

4 / 4 mph 59 / 59°F 88% 1033 mb
Low level cloud: 16%
Mid level cloud: 17%
High level cloud: 4%
Most Significant Cloud Type: low
22%
0.00 In
Thu 27
Sep
00:00

SSE
SSE

5 / 8 mph 47 / 45°F 91% 1033 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 2%
Most Significant Cloud Type: medium
6%
0.00 In
06:00

SW
SW

2 / 4 mph 47 / 47°F 85% 1035 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 1%
Most Significant Cloud Type: medium
3%
0.00 In
12:00

SSE
SSE

6 / 7 mph 65 / 65°F 64% 1033 mb
Low level cloud: 0%
Mid level cloud: 1%
High level cloud: 2%
Most Significant Cloud Type: high
2%
0.00 In
18:00

NE
NE

3 / 4 mph 57 / 58°F 86% 1035 mb
Low level cloud: 0%
Mid level cloud: 10%
High level cloud: 0%
Most Significant Cloud Type: medium
10%
0.00 In
Fri 28
Sep
00:00

SSE
SSE

8 / 17 mph 48 / 44°F 84% 1031 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 3%
Most Significant Cloud Type: medium
1%
0.00 In
06:00

SSW
SSW

3 / 5 mph 53 / 54°F 87% 1035 mb
Low level cloud: 0%
Mid level cloud: 8%
High level cloud: 0%
Most Significant Cloud Type: medium
7%
0.00 In
12:00

SE
SE

15 / 17 mph 62 / 62°F 65% 1025 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: medium
2%
0.00 In
18:00

N
N

5 / 7 mph 60 / 60°F 94% 1035 mb
Low level cloud: 8%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: low
10%
0.00 In
Sat 29
Sep
00:00

SE
SE

15 / 25 mph 49 / 43°F 79% 1017 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.00 In
06:00

NW
NW

2 / 3 mph 54 / 54°F 94% 1036 mb
Low level cloud: 4%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: low
5%
0.00 In
12:00

SSE
SSE

16 / 19 mph 59 / 59°F 69% 1009 mb
Low level cloud: 2%
Mid level cloud: 30%
High level cloud: 69%
Most Significant Cloud Type: medium
39%
0.00 In
18:00

N
N

5 / 8 mph 59 / 59°F 87% 1035 mb
Low level cloud: 0%
Mid level cloud: 7%
High level cloud: 47%
Most Significant Cloud Type: medium
9%
0.00 In
Sun 30
Sep
00:00

SE
SE

15 / 21 mph 48 / 41°F 93% 1002 mb
Low level cloud: 45%
Mid level cloud: 69%
High level cloud: 97%
Most Significant Cloud Type: low
80%
0.16 In
06:00

SE
SE

2 / 4 mph 52 / 53°F 91% 1035 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.00 In
12:00

SSE
SSE

10 / 11 mph 54 / 51°F 95% 996 mb
Low level cloud: 71%
Mid level cloud: 45%
High level cloud: 43%
Most Significant Cloud Type: low
92%
0.41 In
18:00

ENE
ENE

5 / 9 mph 59 / 59°F 84% 1033 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: medium
5%
0.00 In
Mon 01
Oct
00:00

S
S

8 / 16 mph 45 / 40°F 95% 996 mb
Low level cloud: 24%
Mid level cloud: 20%
High level cloud: 5%
Most Significant Cloud Type: low
31%
0.02 In
06:00

ENE
ENE

4 / 7 mph 49 / 47°F 95% 1034 mb
Low level cloud: 18%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: low
19%
0.00 In
12:00

SW
SW

12 / 15 mph 58 / 56°F 77% 998 mb
Low level cloud: 6%
Mid level cloud: 44%
High level cloud: 3%
Most Significant Cloud Type: medium
61%
0.02 In
18:00

ENE
ENE

5 / 9 mph 55 / 54°F 89% 1032 mb
Low level cloud: 61%
Mid level cloud: 8%
High level cloud: 3%
Most Significant Cloud Type: low
64%
0.01 In
Tue 02
Oct
00:00

WSW
WSW

8 / 15 mph 44 / 40°F 93% 1000 mb
Low level cloud: 5%
Mid level cloud: 53%
High level cloud: 10%
Most Significant Cloud Type: medium
67%
0.18 In
06:00

E
E

4 / 6 mph 48 / 47°F 98% 1032 mb
Low level cloud: 65%
Mid level cloud: 9%
High level cloud: 3%
Most Significant Cloud Type: low
100%
0.00 In
12:00

WNW
WNW

17 / 27 mph 50 / 45°F 89% 1008 mb
Low level cloud: 72%
Mid level cloud: 54%
High level cloud: 17%
Most Significant Cloud Type: low
92%
0.14 In
18:00

NNE
NNE

5 / 7 mph 58 / 57°F 93% 1030 mb
Low level cloud: 10%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
9%
0.01 In
Wed 03
Oct
00:00

W
W

9 / 19 mph 42 / 37°F 89% 1021 mb
Low level cloud: 25%
Mid level cloud: 11%
High level cloud: 41%
Most Significant Cloud Type: low
33%
0.11 In
06:00

ENE
ENE

4 / 6 mph 52 / 51°F 96% 1028 mb
Low level cloud: 71%
Mid level cloud: 0%
High level cloud: 15%
Most Significant Cloud Type: low
72%
0.01 In
12:00

SSE
SSE

8 / 9 mph 50 / 47°F 92% 1022 mb
Low level cloud: 49%
Mid level cloud: 66%
High level cloud: 56%
Most Significant Cloud Type: low
79%
0.07 In
18:00

SSE
SSE

3 / 5 mph 56 / 57°F 86% 1026 mb
Low level cloud: 65%
Mid level cloud: 0%
High level cloud: 4%
Most Significant Cloud Type: low
65%
0.01 In
Thu 04
Oct
00:00

SSW
SSW

9 / 16 mph 55 / 53°F 98% 1018 mb
Low level cloud: 64%
Mid level cloud: 43%
High level cloud: 11%
Most Significant Cloud Type: low
80%
0.09 In
06:00

S
S

3 / 6 mph 49 / 48°F 94% 1025 mb
Low level cloud: 31%
Mid level cloud: 0%
High level cloud: 5%
Most Significant Cloud Type: low
31%
0.00 In
12:00

W
W

9 / 10 mph 59 / 59°F 69% 1023 mb
Low level cloud: 20%
Mid level cloud: 30%
High level cloud: 33%
Most Significant Cloud Type: low
34%
0.36 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