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Durley 14 Day Long Range Forecast

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

Wiltshire, United Kingdom

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

Over the next 14 days the Durley forecast suggests the average daytime maximum temperature will be around 11°C, with a high for the two weeks of 15°C expected on the afternoon of Thursday 20th. The mean minimum temperature will be 4°C, dipping to its lowest on the morning of Tuesday 18th at 1°C. Expect the next 14 days have some days seeing a little precipitation and some days with rain. It looks like Thursday 27th will have the most precipitation with an accumulation of around 18.0mm. On the whole winds are likely to be moderate.

DayLocal TimeDirSpeed/
Gust		Temp/
Feels Like		HumidityPressureCloud AmountPrecip AmountWeather
Tue 18
Mar		18:00

ESE
ESE

 10 / 14 mph 45 / 39°F 69% 1021 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

E
E

 8 / 13 mph 40 / 34°F 78% 1022 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Wed 19
Mar		00:00

E
E

 6 / 12 mph 34 / 29°F 83% 1021 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 3%
Most Significant Cloud Type: high
2%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

E
E

 5 / 10 mph 34 / 30°F 84% 1021 mb
Low level cloud: 0%
Mid level cloud: 46%
High level cloud: 19%
Most Significant Cloud Type: medium
46%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

E
E

 4 / 8 mph 34 / 31°F 88% 1021 mb
Low level cloud: 0%
Mid level cloud: 46%
High level cloud: 32%
Most Significant Cloud Type: medium
47%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

ESE
ESE

 5 / 7 mph 45 / 42°F 76% 1022 mb
Low level cloud: 0%
Mid level cloud: 91%
High level cloud: 36%
Most Significant Cloud Type: medium
92%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

SE
SE

 8 / 10 mph 53 / 50°F 72% 1021 mb
Low level cloud: 13%
Mid level cloud: 99%
High level cloud: 27%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

SSE
SSE

 9 / 12 mph 56 / 53°F 71% 1020 mb
Low level cloud: 74%
Mid level cloud: 44%
High level cloud: 19%
Most Significant Cloud Type: low
91%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

SSE
SSE

 7 / 13 mph 48 / 45°F 89% 1021 mb
Low level cloud: 2%
Mid level cloud: 77%
High level cloud: 55%
Most Significant Cloud Type: medium
83%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

SSE
SSE

 4 / 9 mph 45 / 42°F 91% 1022 mb
Low level cloud: 0%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Thu 20
Mar		00:00

SE
SE

 3 / 7 mph 44 / 42°F 90% 1022 mb
Low level cloud: 28%
Mid level cloud: 50%
High level cloud: 5%
Most Significant Cloud Type: low
45%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

SE
SE

 4 / 8 mph 43 / 41°F 92% 1022 mb
Low level cloud: 44%
Mid level cloud: 44%
High level cloud: 0%
Most Significant Cloud Type: low
59%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

ESE
ESE

 5 / 10 mph 45 / 42°F 94% 1021 mb
Low level cloud: 87%
Mid level cloud: 77%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

SE
SE

 6 / 8 mph 49 / 46°F 94% 1022 mb
Low level cloud: 62%
Mid level cloud: 83%
High level cloud: 0%
Most Significant Cloud Type: low
91%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

SE
SE

 9 / 11 mph 58 / 55°F 75% 1020 mb
Low level cloud: 63%
Mid level cloud: 25%
High level cloud: 0%
Most Significant Cloud Type: low
71%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

SSE
SSE

 12 / 16 mph 59 / 56°F 69% 1019 mb
Low level cloud: 56%
Mid level cloud: 14%
High level cloud: 0%
Most Significant Cloud Type: low
60%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

SE
SE

 9 / 14 mph 53 / 50°F 86% 1018 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: medium
4%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

ESE
ESE

 7 / 13 mph 49 / 46°F 93% 1018 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: medium
3%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Fri 21
Mar		00:00

ESE
ESE

 8 / 17 mph 46 / 42°F 92% 1016 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 100%
Most Significant Cloud Type: medium
6%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

E
E

 8 / 17 mph 46 / 41°F 94% 1014 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 99%
Most Significant Cloud Type: medium
7%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

ESE
ESE

 12 / 21 mph 48 / 42°F 89% 1012 mb
Low level cloud: 7%
Mid level cloud: 100%
High level cloud: 84%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

ESE
ESE

 14 / 19 mph 51 / 46°F 85% 1010 mb
Low level cloud: 6%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

ESE
ESE

 12 / 16 mph 56 / 52°F 81% 1007 mb
Low level cloud: 14%
Mid level cloud: 99%
High level cloud: 100%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

ESE
ESE

 14 / 18 mph 59 / 56°F 73% 1004 mb
Low level cloud: 37%
Mid level cloud: 100%
High level cloud: 11%
Most Significant Cloud Type: low
72%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

SE
SE

 12 / 19 mph 53 / 49°F 84% 1003 mb
Low level cloud: 90%
Mid level cloud: 99%
High level cloud: 12%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

SE
SE

 10 / 15 mph 51 / 47°F 94% 1003 mb
Low level cloud: 85%
Mid level cloud: 59%
High level cloud: 89%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sat 22
Mar		00:00

SE
SE

 8 / 15 mph 48 / 44°F 98% 1002 mb
Low level cloud: 70%
Mid level cloud: 39%
High level cloud: 32%
Most Significant Cloud Type: low
87%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

SE
SE

 8 / 14 mph 47 / 43°F 97% 1000 mb
Low level cloud: 26%
Mid level cloud: 18%
High level cloud: 50%
Most Significant Cloud Type: low
38%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

ESE
ESE

 8 / 15 mph 45 / 41°F 96% 999 mb
Low level cloud: 88%
Mid level cloud: 88%
High level cloud: 91%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

ESE
ESE

 11 / 16 mph 48 / 43°F 94% 999 mb
Low level cloud: 96%
Mid level cloud: 76%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

SE
SE

 9 / 11 mph 50 / 46°F 96% 998 mb
Low level cloud: 99%
Mid level cloud: 78%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

SE
SE

 9 / 10 mph 51 / 48°F 96% 996 mb
Low level cloud: 100%
Mid level cloud: 78%
High level cloud: 98%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

SE
SE

 4 / 5 mph 51 / 50°F 96% 997 mb
Low level cloud: 65%
Mid level cloud: 45%
High level cloud: 95%
Most Significant Cloud Type: low
91%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

E
E

 2 / 3 mph 49 / 50°F 95% 998 mb
Low level cloud: 32%
Mid level cloud: 84%
High level cloud: 67%
Most Significant Cloud Type: low
69%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sun 23
Mar		00:00

NNW
NNW

 4 / 6 mph 47 / 46°F 95% 997 mb
Low level cloud: 73%
Mid level cloud: 86%
High level cloud: 35%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

NNW
NNW

 15 / 22 mph 42 / 35°F 96% 998 mb
Low level cloud: 99%
Mid level cloud: 72%
High level cloud: 62%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
06:00

NW
NW

 15 / 21 mph 40 / 31°F 96% 999 mb
Low level cloud: 99%
Mid level cloud: 100%
High level cloud: 51%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

NW
NW

 13 / 19 mph 39 / 31°F 97% 1001 mb
Low level cloud: 99%
Mid level cloud: 71%
High level cloud: 8%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

NW
NW

 11 / 15 mph 41 / 35°F 92% 1002 mb
Low level cloud: 97%
Mid level cloud: 77%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

NW
NW

 9 / 13 mph 44 / 38°F 94% 1003 mb
Low level cloud: 99%
Mid level cloud: 46%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

NW
NW

 9 / 13 mph 42 / 37°F 94% 1005 mb
Low level cloud: 97%
Mid level cloud: 46%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

WNW
WNW

 7 / 10 mph 42 / 37°F 94% 1007 mb
Low level cloud: 97%
Mid level cloud: 46%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Mon 24
Mar		00:00

SW
SW

 6 / 9 mph 41 / 37°F 95% 1007 mb
Low level cloud: 95%
Mid level cloud: 46%
High level cloud: 34%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

SW
SW

 8 / 14 mph 40 / 35°F 90% 1006 mb
Low level cloud: 0%
Mid level cloud: 39%
High level cloud: 95%
Most Significant Cloud Type: medium
42%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

SSW
SSW

 9 / 17 mph 39 / 32°F 89% 1006 mb
Low level cloud: 0%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

SSW
SSW

 14 / 28 mph 41 / 34°F 87% 1006 mb
Low level cloud: 92%
Mid level cloud: 52%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

SSW
SSW

 13 / 21 mph 44 / 38°F 95% 1006 mb
Low level cloud: 100%
Mid level cloud: 74%
High level cloud: 58%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

SSW
SSW

 11 / 17 mph 46 / 41°F 95% 1006 mb
Low level cloud: 100%
Mid level cloud: 99%
High level cloud: 32%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

SSW
SSW

 9 / 13 mph 45 / 40°F 98% 1008 mb
Low level cloud: 97%
Mid level cloud: 44%
High level cloud: 80%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

SSW
SSW

 4 / 9 mph 43 / 40°F 99% 1009 mb
Low level cloud: 99%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
DayLocal TimeDirSpeed/
Gust		Temp/
Feels Like		HumidityPressureCloud AmountPrecip AmountWeather
Tue 25
Mar		00:00

WSW
WSW

 5 / 9 mph 47 / 45°F 94% 1021 mb
Low level cloud: 6%
Mid level cloud: 46%
High level cloud: 11%
Most Significant Cloud Type: medium
63%
0.0 In
06:00

WSW
WSW

 6 / 10 mph 44 / 41°F 87% 1019 mb
Low level cloud: 99%
Mid level cloud: 100%
High level cloud: 22%
Most Significant Cloud Type: low
100%
0.0 In
12:00

WSW
WSW

 16 / 30 mph 49 / 43°F 84% 1018 mb
Low level cloud: 71%
Mid level cloud: 10%
High level cloud: 97%
Most Significant Cloud Type: low
86%
0.0 In
18:00

NW
NW

 7 / 10 mph 56 / 54°F 85% 1020 mb
Low level cloud: 78%
Mid level cloud: 25%
High level cloud: 0%
Most Significant Cloud Type: low
86%
0.0 In
Wed 26
Mar		00:00

W
W

 5 / 9 mph 50 / 49°F 96% 1018 mb
Low level cloud: 65%
Mid level cloud: 24%
High level cloud: 4%
Most Significant Cloud Type: low
74%
0.0 In
06:00

NNW
NNW

 5 / 11 mph 43 / 39°F 95% 1018 mb
Low level cloud: 40%
Mid level cloud: 47%
High level cloud: 70%
Most Significant Cloud Type: low
65%
0.0 In
12:00

NNE
NNE

 2 / 3 mph 56 / 58°F 70% 1020 mb
Low level cloud: 98%
Mid level cloud: 30%
High level cloud: 2%
Most Significant Cloud Type: low
100%
0.0 In
18:00

SSW
SSW

 9 / 13 mph 52 / 49°F 82% 1018 mb
Low level cloud: 12%
Mid level cloud: 4%
High level cloud: 11%
Most Significant Cloud Type: low
14%
0.0 In
Thu 27
Mar		00:00

SSW
SSW

 17 / 25 mph 46 / 39°F 90% 1010 mb
Low level cloud: 98%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.0 In
06:00

SSE
SSE

 12 / 19 mph 45 / 39°F 88% 1012 mb
Low level cloud: 32%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: medium
100%
0.0 In
12:00

SSW
SSW

 18 / 25 mph 49 / 43°F 85% 999 mb
Low level cloud: 93%
Mid level cloud: 69%
High level cloud: 45%
Most Significant Cloud Type: low
100%
0.2 In
18:00

SSE
SSE

 11 / 17 mph 47 / 42°F 86% 1008 mb
Low level cloud: 40%
Mid level cloud: 47%
High level cloud: 100%
Most Significant Cloud Type: low
68%
0.0 In
Fri 28
Mar		00:00

WSW
WSW

 13 / 21 mph 39 / 32°F 94% 992 mb
Low level cloud: 42%
Mid level cloud: 100%
High level cloud: 33%
Most Significant Cloud Type: low
80%
0.5 In
06:00

ESE
ESE

 5 / 8 mph 43 / 40°F 90% 1008 mb
Low level cloud: 0%
Mid level cloud: 23%
High level cloud: 0%
Most Significant Cloud Type: medium
22%
0.0 In
12:00

W
W

 13 / 20 mph 46 / 40°F 73% 995 mb
Low level cloud: 64%
Mid level cloud: 44%
High level cloud: 19%
Most Significant Cloud Type: low
81%
0.0 In
18:00

NNE
NNE

 6 / 9 mph 53 / 52°F 67% 1011 mb
Low level cloud: 32%
Mid level cloud: 64%
High level cloud: 0%
Most Significant Cloud Type: low
54%
0.0 In
Sat 29
Mar		00:00

WNW
WNW

 6 / 11 mph 40 / 36°F 94% 1002 mb
Low level cloud: 7%
Mid level cloud: 17%
High level cloud: 1%
Most Significant Cloud Type: low
13%
0.1 In
06:00

NE
NE

 2 / 2 mph 46 / 46°F 86% 1016 mb
Low level cloud: 3%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: low
4%
0.0 In
12:00

NNW
NNW

 13 / 21 mph 46 / 41°F 62% 1011 mb
Low level cloud: 57%
Mid level cloud: 45%
High level cloud: 0%
Most Significant Cloud Type: low
73%
0.0 In
18:00

WSW
WSW

 11 / 18 mph 48 / 44°F 83% 1014 mb
Low level cloud: 12%
Mid level cloud: 47%
High level cloud: 32%
Most Significant Cloud Type: medium
82%
0.0 In
Sun 30
Mar		00:00

WNW
WNW

 4 / 7 mph 40 / 38°F 87% 1017 mb
Low level cloud: 0%
Mid level cloud: 21%
High level cloud: 0%
Most Significant Cloud Type: medium
21%
0.0 In
06:00

W
W

 10 / 18 mph 45 / 40°F 73% 1013 mb
Low level cloud: 81%
Mid level cloud: 0%
High level cloud: 5%
Most Significant Cloud Type: low
81%
0.0 In
12:00

NW
NW

 4 / 8 mph 51 / 50°F 65% 1022 mb
Low level cloud: 43%
Mid level cloud: 14%
High level cloud: 0%
Most Significant Cloud Type: low
47%
0.0 In
18:00

WNW
WNW

 13 / 22 mph 43 / 37°F 80% 1014 mb
Low level cloud: 1%
Mid level cloud: 31%
High level cloud: 0%
Most Significant Cloud Type: medium
33%
0.1 In
Mon 31
Mar		00:00

SSW
SSW

 3 / 6 mph 45 / 44°F 86% 1027 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 12%
Most Significant Cloud Type: high
12%
0.0 In
06:00

WNW
WNW

 9 / 17 mph 34 / 27°F 93% 1025 mb
Low level cloud: 9%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: low
10%
0.0 In
12:00

SW
SW

 15 / 28 mph 52 / 47°F 70% 1027 mb
Low level cloud: 100%
Mid level cloud: 2%
High level cloud: 6%
Most Significant Cloud Type: low
100%
0.0 In
18:00

NW
NW

 6 / 12 mph 47 / 43°F 78% 1028 mb
Low level cloud: 8%
Mid level cloud: 23%
High level cloud: 12%
Most Significant Cloud Type: medium
44%
0.0 In
Tue 01
Apr		00:00

SSW
SSW

 7 / 13 mph 47 / 44°F 96% 1027 mb
Low level cloud: 94%
Mid level cloud: 44%
High level cloud: 56%
Most Significant Cloud Type: low
100%
0.0 In
06:00

SSW
SSW

 4 / 9 mph 38 / 35°F 91% 1030 mb
Low level cloud: 31%
Mid level cloud: 34%
High level cloud: 20%
Most Significant Cloud Type: low
45%
0.0 In
12:00

E
E

 5 / 10 mph 53 / 52°F 85% 1029 mb
Low level cloud: 87%
Mid level cloud: 4%
High level cloud: 10%
Most Significant Cloud Type: low
89%
0.0 In
18:00

SW
SW

 5 / 10 mph 52 / 51°F 87% 1028 mb
Low level cloud: 85%
Mid level cloud: 2%
High level cloud: 34%
Most Significant Cloud Type: low
89%
0.0 In
Wed 02
Apr		00:00

SSE
SSE

 4 / 7 mph 51 / 50°F 93% 1028 mb
Low level cloud: 84%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: low
85%
0.0 In
06:00

S
S

 5 / 9 mph 44 / 42°F 94% 1026 mb
Low level cloud: 14%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
14%
0.0 In
12:00

ESE
ESE

 5 / 10 mph 56 / 55°F 69% 1023 mb
Low level cloud: 96%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
96%
0.0 In
18:00

ESE
ESE

 5 / 10 mph 55 / 54°F 75% 1021 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 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