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Uphempston 14 Day Long Range Forecast

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

Devon, United Kingdom

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

For Uphempston in the coming two weeks the average daytime maximum temperature will be around 16°C, with a high for the two weeks of 18°C expected on the afternoon of Sunday 19th. The average minimum temperature will be 11°C, dipping to its lowest on the morning of Thursday 23rd at 9°C. The coming 14 days will have some days seeing a little precipitation and some days with rain. The current forecast indicates Wednesday 22nd will have the most precipitation with an accumulation of around 6.0mm. On the whole winds are likely to be moderate.

DayLocal TimeDirSpeed/
Gust		Temp/
Feels Like		HumidityPressureCloud AmountPrecip AmountWeather
Tue 14
May		15:00

SSE
SSE

 15 / 23 mph 57 / 52°F 83% 996 mb
Low level cloud: 16%
Mid level cloud: 11%
High level cloud: 3%
Most Significant Cloud Type: low
19%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

SSE
SSE

 11 / 15 mph 57 / 53°F 85% 997 mb
Low level cloud: 1%
Mid level cloud: 11%
High level cloud: 2%
Most Significant Cloud Type: medium
13%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

SE
SE

 8 / 13 mph 55 / 52°F 88% 998 mb
Low level cloud: 58%
Mid level cloud: 30%
High level cloud: 33%
Most Significant Cloud Type: low
72%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Wed 15
May		00:00

SSE
SSE

 15 / 21 mph 54 / 49°F 92% 999 mb
Low level cloud: 64%
Mid level cloud: 27%
High level cloud: 0%
Most Significant Cloud Type: low
73%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

SSE
SSE

 12 / 17 mph 53 / 49°F 93% 999 mb
Low level cloud: 63%
Mid level cloud: 27%
High level cloud: 0%
Most Significant Cloud Type: low
71%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

SE
SE

 15 / 26 mph 53 / 47°F 89% 1000 mb
Low level cloud: 58%
Mid level cloud: 76%
High level cloud: 0%
Most Significant Cloud Type: low
84%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

SE
SE

 18 / 28 mph 54 / 49°F 87% 1001 mb
Low level cloud: 17%
Mid level cloud: 58%
High level cloud: 0%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

SE
SE

 16 / 21 mph 57 / 52°F 84% 1002 mb
Low level cloud: 36%
Mid level cloud: 74%
High level cloud: 0%
Most Significant Cloud Type: low
61%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

ESE
ESE

 15 / 20 mph 57 / 53°F 83% 1002 mb
Low level cloud: 58%
Mid level cloud: 78%
High level cloud: 0%
Most Significant Cloud Type: low
85%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

E
E

 16 / 23 mph 56 / 52°F 88% 1003 mb
Low level cloud: 55%
Mid level cloud: 61%
High level cloud: 5%
Most Significant Cloud Type: low
77%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

ESE
ESE

 9 / 14 mph 55 / 53°F 91% 1004 mb
Low level cloud: 32%
Mid level cloud: 31%
High level cloud: 39%
Most Significant Cloud Type: low
47%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Thu 16
May		00:00

ESE
ESE

 9 / 13 mph 54 / 52°F 92% 1004 mb
Low level cloud: 39%
Mid level cloud: 24%
High level cloud: 1%
Most Significant Cloud Type: low
47%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

ESE
ESE

 8 / 12 mph 53 / 51°F 93% 1004 mb
Low level cloud: 23%
Mid level cloud: 14%
High level cloud: 0%
Most Significant Cloud Type: low
28%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

E
E

 11 / 16 mph 53 / 48°F 93% 1005 mb
Low level cloud: 40%
Mid level cloud: 4%
High level cloud: 9%
Most Significant Cloud Type: low
42%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

ESE
ESE

 12 / 16 mph 55 / 50°F 87% 1006 mb
Low level cloud: 43%
Mid level cloud: 6%
High level cloud: 42%
Most Significant Cloud Type: low
49%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

ESE
ESE

 9 / 11 mph 57 / 54°F 85% 1006 mb
Low level cloud: 24%
Mid level cloud: 3%
High level cloud: 41%
Most Significant Cloud Type: low
29%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

E
E

 6 / 8 mph 59 / 56°F 83% 1007 mb
Low level cloud: 0%
Mid level cloud: 21%
High level cloud: 80%
Most Significant Cloud Type: medium
24%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

NE
NE

 4 / 5 mph 59 / 57°F 80% 1007 mb
Low level cloud: 0%
Mid level cloud: 45%
High level cloud: 100%
Most Significant Cloud Type: medium
49%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

N
N

 5 / 8 mph 55 / 54°F 78% 1007 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
Fri 17
May		00:00

NNW
NNW

 5 / 8 mph 54 / 53°F 90% 1007 mb
Low level cloud: 20%
Mid level cloud: 79%
High level cloud: 46%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

WNW
WNW

 2 / 2 mph 54 / 54°F 94% 1006 mb
Low level cloud: 42%
Mid level cloud: 91%
High level cloud: 22%
Most Significant Cloud Type: low
76%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

SE
SE

 2 / 4 mph 54 / 53°F 94% 1006 mb
Low level cloud: 56%
Mid level cloud: 46%
High level cloud: 98%
Most Significant Cloud Type: low
83%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

SSE
SSE

 4 / 6 mph 55 / 54°F 90% 1007 mb
Low level cloud: 61%
Mid level cloud: 43%
High level cloud: 64%
Most Significant Cloud Type: low
83%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

SE
SE

 8 / 12 mph 58 / 55°F 78% 1008 mb
Low level cloud: 0%
Mid level cloud: 11%
High level cloud: 87%
Most Significant Cloud Type: medium
13%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

SE
SE

 7 / 9 mph 59 / 56°F 84% 1009 mb
Low level cloud: 3%
Mid level cloud: 6%
High level cloud: 69%
Most Significant Cloud Type: medium
16%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

E
E

 6 / 7 mph 59 / 56°F 88% 1010 mb
Low level cloud: 20%
Mid level cloud: 4%
High level cloud: 88%
Most Significant Cloud Type: low
31%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

NE
NE

 6 / 8 mph 56 / 55°F 91% 1012 mb
Low level cloud: 11%
Mid level cloud: 6%
High level cloud: 100%
Most Significant Cloud Type: medium
41%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sat 18
May		00:00

NNE
NNE

 7 / 10 mph 55 / 53°F 90% 1012 mb
Low level cloud: 7%
Mid level cloud: 61%
High level cloud: 32%
Most Significant Cloud Type: medium
82%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

NNE
NNE

 8 / 12 mph 54 / 51°F 91% 1012 mb
Low level cloud: 8%
Mid level cloud: 32%
High level cloud: 100%
Most Significant Cloud Type: medium
57%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

NNE
NNE

 8 / 14 mph 54 / 49°F 90% 1013 mb
Low level cloud: 4%
Mid level cloud: 44%
High level cloud: 87%
Most Significant Cloud Type: medium
58%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

NE
NE

 10 / 16 mph 56 / 52°F 86% 1014 mb
Low level cloud: 25%
Mid level cloud: 44%
High level cloud: 27%
Most Significant Cloud Type: low
43%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

ENE
ENE

 9 / 11 mph 60 / 57°F 85% 1014 mb
Low level cloud: 34%
Mid level cloud: 30%
High level cloud: 32%
Most Significant Cloud Type: low
48%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

NNE
NNE

 8 / 10 mph 63 / 60°F 85% 1014 mb
Low level cloud: 33%
Mid level cloud: 25%
High level cloud: 32%
Most Significant Cloud Type: low
45%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

NNE
NNE

 8 / 13 mph 59 / 59°F 88% 1014 mb
Low level cloud: 16%
Mid level cloud: 100%
High level cloud: 50%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

N
N

 9 / 15 mph 58 / 55°F 92% 1014 mb
Low level cloud: 28%
Mid level cloud: 44%
High level cloud: 100%
Most Significant Cloud Type: low
55%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sun 19
May		00:00

N
N

 8 / 16 mph 53 / 50°F 93% 1014 mb
Low level cloud: 15%
Mid level cloud: 44%
High level cloud: 100%
Most Significant Cloud Type: medium
88%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

N
N

 8 / 15 mph 53 / 51°F 93% 1013 mb
Low level cloud: 10%
Mid level cloud: 43%
High level cloud: 100%
Most Significant Cloud Type: medium
76%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

NNE
NNE

 9 / 15 mph 55 / 51°F 93% 1014 mb
Low level cloud: 16%
Mid level cloud: 31%
High level cloud: 95%
Most Significant Cloud Type: low
37%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

NNE
NNE

 11 / 13 mph 60 / 59°F 82% 1014 mb
Low level cloud: 0%
Mid level cloud: 8%
High level cloud: 17%
Most Significant Cloud Type: medium
9%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

NE
NE

 10 / 11 mph 63 / 62°F 77% 1014 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 13%
Most Significant Cloud Type: medium
3%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

NNE
NNE

 10 / 12 mph 65 / 64°F 71% 1013 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 12%
Most Significant Cloud Type: high
12%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

N
N

 10 / 13 mph 64 / 63°F 79% 1012 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 4%
Most Significant Cloud Type: medium
2%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

NNW
NNW

 9 / 19 mph 55 / 51°F 87% 1013 mb
Low level cloud: 0%
Mid level cloud: 17%
High level cloud: 0%
Most Significant Cloud Type: medium
16%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Mon 20
May		00:00

NNE
NNE

 9 / 17 mph 52 / 49°F 91% 1013 mb
Low level cloud: 14%
Mid level cloud: 55%
High level cloud: 0%
Most Significant Cloud Type: medium
94%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

NNE
NNE

 10 / 17 mph 54 / 51°F 90% 1012 mb
Low level cloud: 6%
Mid level cloud: 45%
High level cloud: 0%
Most Significant Cloud Type: medium
61%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

NNE
NNE

 13 / 19 mph 53 / 48°F 89% 1013 mb
Low level cloud: 19%
Mid level cloud: 45%
High level cloud: 9%
Most Significant Cloud Type: low
35%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

NE
NE

 14 / 17 mph 58 / 54°F 84% 1013 mb
Low level cloud: 25%
Mid level cloud: 20%
High level cloud: 2%
Most Significant Cloud Type: low
31%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

NE
NE

 17 / 21 mph 60 / 59°F 85% 1013 mb
Low level cloud: 52%
Mid level cloud: 33%
High level cloud: 1%
Most Significant Cloud Type: low
63%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

ENE
ENE

 13 / 16 mph 61 / 59°F 83% 1012 mb
Low level cloud: 39%
Mid level cloud: 42%
High level cloud: 3%
Most Significant Cloud Type: low
53%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

NE
NE

 9 / 12 mph 62 / 59°F 84% 1012 mb
Low level cloud: 11%
Mid level cloud: 44%
High level cloud: 1%
Most Significant Cloud Type: medium
73%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

NNW
NNW

 8 / 15 mph 55 / 51°F 90% 1013 mb
Low level cloud: 26%
Mid level cloud: 50%
High level cloud: 0%
Most Significant Cloud Type: low
43%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
DayLocal TimeDirSpeed/
Gust		Temp/
Feels Like		HumidityPressureCloud AmountPrecip AmountWeather
Tue 21
May		00:00

SE
SE

 10 / 21 mph 54 / 51°F 92% 1013 mb
Low level cloud: 51%
Mid level cloud: 59%
High level cloud: 41%
Most Significant Cloud Type: low
76%
0.1 In
06:00

NE
NE

 9 / 18 mph 51 / 48°F 92% 1023 mb
Low level cloud: 31%
Mid level cloud: 6%
High level cloud: 2%
Most Significant Cloud Type: low
33%
0.0 In
12:00

SSE
SSE

 11 / 23 mph 56 / 54°F 85% 1010 mb
Low level cloud: 84%
Mid level cloud: 50%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.0 In
Wed 22
May		00:00

W
W

 8 / 16 mph 52 / 49°F 91% 1012 mb
Low level cloud: 5%
Mid level cloud: 21%
High level cloud: 0%
Most Significant Cloud Type: medium
35%
0.0 In
06:00

WNW
WNW

 2 / 5 mph 56 / 56°F 88% 1012 mb
Low level cloud: 12%
Mid level cloud: 12%
High level cloud: 64%
Most Significant Cloud Type: low
24%
0.0 In
12:00

WSW
WSW

 1 / 2 mph 63 / 63°F 81% 1011 mb
Low level cloud: 74%
Mid level cloud: 10%
High level cloud: 3%
Most Significant Cloud Type: low
78%
0.0 In
18:00

NW
NW

 9 / 19 mph 61 / 61°F 85% 1013 mb
Low level cloud: 8%
Mid level cloud: 21%
High level cloud: 33%
Most Significant Cloud Type: low
19%
0.0 In
Thu 23
May		00:00

NW
NW

 4 / 8 mph 59 / 59°F 93% 1010 mb
Low level cloud: 60%
Mid level cloud: 59%
High level cloud: 9%
Most Significant Cloud Type: low
82%
0.1 In
06:00

N
N

 4 / 8 mph 52 / 51°F 90% 1016 mb
Low level cloud: 94%
Mid level cloud: 22%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.0 In
12:00

SW
SW

 11 / 24 mph 57 / 55°F 88% 1013 mb
Low level cloud: 59%
Mid level cloud: 46%
High level cloud: 10%
Most Significant Cloud Type: low
76%
0.0 In
18:00

NNE
NNE

 4 / 9 mph 58 / 58°F 85% 1017 mb
Low level cloud: 34%
Mid level cloud: 26%
High level cloud: 5%
Most Significant Cloud Type: low
44%
0.1 In
Fri 24
May		00:00

WSW
WSW

 5 / 10 mph 58 / 58°F 94% 1015 mb
Low level cloud: 27%
Mid level cloud: 26%
High level cloud: 5%
Most Significant Cloud Type: low
36%
0.0 In
06:00

NNW
NNW

 5 / 11 mph 53 / 51°F 85% 1019 mb
Low level cloud: 0%
Mid level cloud: 13%
High level cloud: 9%
Most Significant Cloud Type: medium
13%
0.0 In
12:00

SW
SW

 10 / 20 mph 58 / 57°F 83% 1018 mb
Low level cloud: 59%
Mid level cloud: 37%
High level cloud: 100%
Most Significant Cloud Type: low
83%
0.0 In
18:00

SE
SE

 2 / 3 mph 58 / 58°F 79% 1021 mb
Low level cloud: 55%
Mid level cloud: 16%
High level cloud: 16%
Most Significant Cloud Type: low
62%
0.0 In
Sat 25
May		00:00

WNW
WNW

 5 / 10 mph 57 / 57°F 91% 1021 mb
Low level cloud: 6%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: low
7%
0.0 In
06:00

SE
SE

 14 / 29 mph 51 / 47°F 90% 1022 mb
Low level cloud: 30%
Mid level cloud: 48%
High level cloud: 100%
Most Significant Cloud Type: low
58%
0.0 In
12:00

SE
SE

 6 / 13 mph 61 / 61°F 84% 1023 mb
Low level cloud: 3%
Mid level cloud: 0%
High level cloud: 5%
Most Significant Cloud Type: low
3%
0.0 In
18:00

SE
SE

 13 / 28 mph 55 / 52°F 95% 1019 mb
Low level cloud: 95%
Mid level cloud: 72%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.2 In
Sun 26
May		00:00

NNE
NNE

 3 / 7 mph 62 / 62°F 90% 1023 mb
Low level cloud: 2%
Mid level cloud: 1%
High level cloud: 32%
Most Significant Cloud Type: medium
6%
0.0 In
06:00

SSE
SSE

 6 / 13 mph 55 / 54°F 92% 1016 mb
Low level cloud: 67%
Mid level cloud: 44%
High level cloud: 0%
Most Significant Cloud Type: low
81%
0.0 In
12:00

ESE
ESE

 6 / 12 mph 61 / 61°F 82% 1024 mb
Low level cloud: 0%
Mid level cloud: 45%
High level cloud: 15%
Most Significant Cloud Type: medium
45%
0.0 In
18:00

SW
SW

 11 / 22 mph 59 / 59°F 92% 1015 mb
Low level cloud: 67%
Mid level cloud: 99%
High level cloud: 44%
Most Significant Cloud Type: low
100%
0.0 In
Mon 27
May		00:00

ENE
ENE

 2 / 4 mph 64 / 64°F 80% 1022 mb
Low level cloud: 0%
Mid level cloud: 7%
High level cloud: 93%
Most Significant Cloud Type: medium
10%
0.0 In
06:00

SSW
SSW

 7 / 15 mph 55 / 53°F 93% 1013 mb
Low level cloud: 54%
Mid level cloud: 44%
High level cloud: 32%
Most Significant Cloud Type: low
73%
0.0 In
12:00

E
E

 6 / 13 mph 61 / 61°F 83% 1022 mb
Low level cloud: 0%
Mid level cloud: 44%
High level cloud: 100%
Most Significant Cloud Type: medium
47%
0.0 In
18:00

SSW
SSW

 11 / 22 mph 60 / 60°F 89% 1010 mb
Low level cloud: 2%
Mid level cloud: 43%
High level cloud: 6%
Most Significant Cloud Type: medium
47%
0.3 In
Tue 28
May		00:00

NE
NE

 6 / 13 mph 58 / 57°F 87% 1022 mb
Low level cloud: 3%
Mid level cloud: 43%
High level cloud: 98%
Most Significant Cloud Type: medium
54%
0.0 In
06:00

S
S

 8 / 18 mph 55 / 52°F 92% 1006 mb
Low level cloud: 1%
Mid level cloud: 6%
High level cloud: 6%
Most Significant Cloud Type: medium
9%
0.0 In
12:00

E
E

 10 / 22 mph 61 / 61°F 87% 1020 mb
Low level cloud: 41%
Mid level cloud: 42%
High level cloud: 100%
Most Significant Cloud Type: low
67%
0.0 In
18:00

S
S

 8 / 17 mph 62 / 62°F 95% 1004 mb
Low level cloud: 93%
Mid level cloud: 36%
High level cloud: 18%
Most Significant Cloud Type: low
100%
0.0 In
Wed 29
May		00:00

E
E

 15 / 31 mph 55 / 51°F 97% 1019 mb
Low level cloud: 85%
Mid level cloud: 98%
High level cloud: 21%
Most Significant Cloud Type: low
100%
0.0 In
06:00

WNW
WNW

 8 / 16 mph 55 / 53°F 93% 1001 mb
Low level cloud: 95%
Mid level cloud: 99%
High level cloud: 81%
Most Significant Cloud Type: low
100%
0.0 In
12:00

ENE
ENE

 17 / 37 mph 59 / 59°F 90% 1017 mb
Low level cloud: 67%
Mid level cloud: 45%
High level cloud: 0%
Most Significant Cloud Type: low
83%
0.0 In
18:00

WSW
WSW

 12 / 26 mph 60 / 60°F 82% 1001 mb
Low level cloud: 10%
Mid level cloud: 5%
High level cloud: 22%
Most Significant Cloud Type: low
14%
0.3 In

Other Locations Near to Uphempston

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