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Meonstoke 14 Day Long Range Forecast

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

Hampshire, United Kingdom

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

For Meonstoke 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 26th. The mean minimum temperature will be 10°C, dipping to its lowest on the morning of Friday 24th at 6°C. Expect the next 14 days have some days seeing a little precipitation and some days with rain. Current predictions suggest Friday 31st 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
Thu 23
May
15:00

WNW
WNW

12 / 17 mph 57 / 54°F 73% 1015 mb
Low level cloud: 86%
Mid level cloud: 3%
High level cloud: 3%
Most Significant Cloud Type: low
88%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

WNW
WNW

8 / 11 mph 56 / 53°F 79% 1016 mb
Low level cloud: 67%
Mid level cloud: 2%
High level cloud: 5%
Most Significant Cloud Type: low
68%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

WNW
WNW

4 / 6 mph 50 / 48°F 89% 1017 mb
Low level cloud: 14%
Mid level cloud: 0%
High level cloud: 3%
Most Significant Cloud Type: low
14%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Fri 24
May
00:00

W
W

4 / 8 mph 47 / 45°F 94% 1018 mb
Low level cloud: 19%
Mid level cloud: 0%
High level cloud: 4%
Most Significant Cloud Type: low
19%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

WNW
WNW

3 / 6 mph 45 / 44°F 91% 1018 mb
Low level cloud: 4%
Mid level cloud: 0%
High level cloud: 4%
Most Significant Cloud Type: low
4%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

SSW
SSW

2 / 3 mph 49 / 49°F 84% 1019 mb
Low level cloud: 4%
Mid level cloud: 1%
High level cloud: 6%
Most Significant Cloud Type: low
5%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

SSW
SSW

7 / 8 mph 58 / 55°F 66% 1019 mb
Low level cloud: 57%
Mid level cloud: 3%
High level cloud: 5%
Most Significant Cloud Type: low
58%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

SSW
SSW

9 / 11 mph 61 / 59°F 60% 1019 mb
Low level cloud: 76%
Mid level cloud: 5%
High level cloud: 4%
Most Significant Cloud Type: low
78%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

SSW
SSW

8 / 11 mph 62 / 60°F 61% 1019 mb
Low level cloud: 55%
Mid level cloud: 7%
High level cloud: 3%
Most Significant Cloud Type: low
57%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

SSW
SSW

5 / 5 mph 62 / 59°F 73% 1019 mb
Low level cloud: 12%
Mid level cloud: 10%
High level cloud: 0%
Most Significant Cloud Type: low
15%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

WSW
WSW

4 / 8 mph 52 / 49°F 88% 1020 mb
Low level cloud: 14%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: low
15%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sat 25
May
00:00

WSW
WSW

1 / 1 mph 48 / 48°F 89% 1020 mb
Low level cloud: 50%
Mid level cloud: 4%
High level cloud: 7%
Most Significant Cloud Type: low
52%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

W
W

0 / 1 mph 47 / 47°F 89% 1019 mb
Low level cloud: 12%
Mid level cloud: 0%
High level cloud: 4%
Most Significant Cloud Type: low
12%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

SW
SW

2 / 3 mph 52 / 51°F 84% 1019 mb
Low level cloud: 6%
Mid level cloud: 0%
High level cloud: 5%
Most Significant Cloud Type: low
6%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

SE
SE

4 / 6 mph 59 / 57°F 66% 1019 mb
Low level cloud: 3%
Mid level cloud: 8%
High level cloud: 0%
Most Significant Cloud Type: low
6%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

SSE
SSE

10 / 11 mph 62 / 60°F 63% 1018 mb
Low level cloud: 1%
Mid level cloud: 0%
High level cloud: 19%
Most Significant Cloud Type: high
18%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

SSE
SSE

10 / 12 mph 60 / 60°F 63% 1017 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 100%
Most Significant Cloud Type: high
99%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

SSE
SSE

6 / 9 mph 58 / 56°F 77% 1016 mb
Low level cloud: 0%
Mid level cloud: 91%
High level cloud: 25%
Most Significant Cloud Type: medium
92%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

ESE
ESE

7 / 13 mph 54 / 51°F 78% 1015 mb
Low level cloud: 26%
Mid level cloud: 100%
High level cloud: 32%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sun 26
May
00:00

ESE
ESE

7 / 11 mph 52 / 50°F 97% 1015 mb
Low level cloud: 58%
Mid level cloud: 60%
High level cloud: 0%
Most Significant Cloud Type: low
78%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
03:00

ESE
ESE

7 / 13 mph 52 / 50°F 96% 1013 mb
Low level cloud: 21%
Mid level cloud: 64%
High level cloud: 33%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

S
S

7 / 10 mph 56 / 53°F 95% 1013 mb
Low level cloud: 57%
Mid level cloud: 18%
High level cloud: 100%
Most Significant Cloud Type: low
75%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

SSW
SSW

13 / 17 mph 60 / 59°F 84% 1013 mb
Low level cloud: 82%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: low
83%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

SSW
SSW

15 / 18 mph 64 / 63°F 69% 1014 mb
Low level cloud: 40%
Mid level cloud: 6%
High level cloud: 16%
Most Significant Cloud Type: low
43%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

SW
SW

16 / 20 mph 63 / 62°F 67% 1014 mb
Low level cloud: 10%
Mid level cloud: 8%
High level cloud: 0%
Most Significant Cloud Type: low
12%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

SW
SW

12 / 17 mph 59 / 56°F 77% 1014 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
21:00

SSW
SSW

7 / 13 mph 53 / 48°F 94% 1015 mb
Low level cloud: 14%
Mid level cloud: 3%
High level cloud: 100%
Most Significant Cloud Type: low
26%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Mon 27
May
00:00

SSW
SSW

6 / 11 mph 50 / 48°F 96% 1015 mb
Low level cloud: 36%
Mid level cloud: 34%
High level cloud: 47%
Most Significant Cloud Type: low
53%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

S
S

6 / 11 mph 50 / 47°F 96% 1014 mb
Low level cloud: 23%
Mid level cloud: 44%
High level cloud: 8%
Most Significant Cloud Type: low
38%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

SSE
SSE

7 / 11 mph 54 / 51°F 91% 1014 mb
Low level cloud: 16%
Mid level cloud: 44%
High level cloud: 100%
Most Significant Cloud Type: low
43%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

WSW
WSW

8 / 11 mph 53 / 50°F 92% 1014 mb
Low level cloud: 91%
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
12:00

S
S

9 / 12 mph 55 / 52°F 84% 1014 mb
Low level cloud: 10%
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
15:00

SSW
SSW

12 / 15 mph 61 / 60°F 63% 1013 mb
Low level cloud: 34%
Mid level cloud: 27%
High level cloud: 19%
Most Significant Cloud Type: low
45%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

SSW
SSW

9 / 11 mph 59 / 56°F 75% 1014 mb
Low level cloud: 0%
Mid level cloud: 12%
High level cloud: 7%
Most Significant Cloud Type: medium
12%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

SW
SW

4 / 6 mph 54 / 52°F 92% 1015 mb
Low level cloud: 3%
Mid level cloud: 7%
High level cloud: 1%
Most Significant Cloud Type: low
5%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Tue 28
May
00:00

WSW
WSW

3 / 6 mph 49 / 48°F 94% 1016 mb
Low level cloud: 12%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: low
14%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

WSW
WSW

4 / 9 mph 47 / 45°F 94% 1016 mb
Low level cloud: 2%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: low
4%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

W
W

5 / 9 mph 50 / 47°F 91% 1017 mb
Low level cloud: 13%
Mid level cloud: 4%
High level cloud: 42%
Most Significant Cloud Type: low
19%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

WSW
WSW

9 / 12 mph 59 / 56°F 69% 1017 mb
Low level cloud: 2%
Mid level cloud: 36%
High level cloud: 100%
Most Significant Cloud Type: medium
44%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

WSW
WSW

15 / 18 mph 63 / 61°F 68% 1017 mb
Low level cloud: 32%
Mid level cloud: 60%
High level cloud: 100%
Most Significant Cloud Type: low
65%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

SW
SW

10 / 14 mph 55 / 52°F 95% 1018 mb
Low level cloud: 79%
Mid level cloud: 97%
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

S
S

9 / 14 mph 52 / 49°F 90% 1017 mb
Low level cloud: 100%
Mid level cloud: 66%
High level cloud: 55%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

SSW
SSW

13 / 21 mph 55 / 51°F 90% 1016 mb
Low level cloud: 91%
Mid level cloud: 48%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Wed 29
May
00:00

SSW
SSW

14 / 22 mph 55 / 51°F 96% 1014 mb
Low level cloud: 100%
Mid level cloud: 86%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

SSW
SSW

14 / 21 mph 55 / 52°F 99% 1012 mb
Low level cloud: 99%
Mid level cloud: 70%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

SW
SW

13 / 19 mph 56 / 53°F 95% 1012 mb
Low level cloud: 97%
Mid level cloud: 43%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

SW
SW

15 / 20 mph 61 / 61°F 78% 1012 mb
Low level cloud: 87%
Mid level cloud: 5%
High level cloud: 32%
Most Significant Cloud Type: low
93%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

SW
SW

17 / 22 mph 63 / 62°F 75% 1011 mb
Low level cloud: 78%
Mid level cloud: 11%
High level cloud: 0%
Most Significant Cloud Type: low
82%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

WSW
WSW

17 / 23 mph 62 / 62°F 81% 1010 mb
Low level cloud: 78%
Mid level cloud: 18%
High level cloud: 5%
Most Significant Cloud Type: low
85%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

W
W

12 / 18 mph 59 / 56°F 89% 1010 mb
Low level cloud: 34%
Mid level cloud: 31%
High level cloud: 10%
Most Significant Cloud Type: low
46%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

W
W

9 / 16 mph 54 / 49°F 95% 1011 mb
Low level cloud: 42%
Mid level cloud: 17%
High level cloud: 0%
Most Significant Cloud Type: low
48%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
DayLocal TimeDirSpeed/
Gust
Temp/
Feels Like
HumidityPressureCloud AmountPrecip AmountWeather
Thu 30
May
00:00

SW
SW

9 / 16 mph 53 / 50°F 90% 1015 mb
Low level cloud: 23%
Mid level cloud: 70%
High level cloud: 100%
Most Significant Cloud Type: medium
100%
0.0 In
06:00

SSE
SSE

4 / 7 mph 54 / 54°F 96% 1011 mb
Low level cloud: 99%
Mid level cloud: 27%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.0 In
12:00

W
W

9 / 17 mph 64 / 64°F 62% 1013 mb
Low level cloud: 59%
Mid level cloud: 8%
High level cloud: 0%
Most Significant Cloud Type: low
62%
0.0 In
18:00

SE
SE

6 / 12 mph 64 / 64°F 87% 1007 mb
Low level cloud: 66%
Mid level cloud: 18%
High level cloud: 100%
Most Significant Cloud Type: low
84%
0.0 In
Fri 31
May
00:00

SE
SE

8 / 15 mph 58 / 56°F 94% 1008 mb
Low level cloud: 14%
Mid level cloud: 5%
High level cloud: 18%
Most Significant Cloud Type: low
18%
0.0 In
06:00

SSW
SSW

10 / 18 mph 53 / 50°F 95% 1004 mb
Low level cloud: 85%
Mid level cloud: 11%
High level cloud: 0%
Most Significant Cloud Type: low
88%
0.0 In
12:00

WSW
WSW

11 / 23 mph 60 / 60°F 75% 1010 mb
Low level cloud: 88%
Mid level cloud: 18%
High level cloud: 18%
Most Significant Cloud Type: low
96%
0.0 In
18:00

N
N

13 / 27 mph 62 / 62°F 88% 1014 mb
Low level cloud: 19%
Mid level cloud: 32%
High level cloud: 0%
Most Significant Cloud Type: low
30%
0.0 In
Sat 01
Jun
00:00

WSW
WSW

4 / 7 mph 55 / 55°F 94% 1007 mb
Low level cloud: 6%
Mid level cloud: 100%
High level cloud: 6%
Most Significant Cloud Type: medium
100%
0.1 In
06:00

N
N

11 / 24 mph 51 / 47°F 91% 1020 mb
Low level cloud: 84%
Mid level cloud: 17%
High level cloud: 14%
Most Significant Cloud Type: low
91%
0.0 In
12:00

W
W

16 / 33 mph 62 / 62°F 75% 1007 mb
Low level cloud: 40%
Mid level cloud: 10%
High level cloud: 0%
Most Significant Cloud Type: low
43%
0.1 In
18:00

NNE
NNE

7 / 15 mph 59 / 60°F 79% 1022 mb
Low level cloud: 23%
Mid level cloud: 18%
High level cloud: 100%
Most Significant Cloud Type: low
41%
0.0 In
Sun 02
Jun
00:00

WSW
WSW

7 / 14 mph 52 / 49°F 97% 1012 mb
Low level cloud: 37%
Mid level cloud: 97%
High level cloud: 43%
Most Significant Cloud Type: low
76%
0.0 In
06:00

NNE
NNE

5 / 11 mph 53 / 51°F 84% 1023 mb
Low level cloud: 8%
Mid level cloud: 23%
High level cloud: 5%
Most Significant Cloud Type: medium
46%
0.0 In
12:00

SW
SW

14 / 29 mph 61 / 61°F 64% 1012 mb
Low level cloud: 6%
Mid level cloud: 81%
High level cloud: 100%
Most Significant Cloud Type: medium
100%
0.0 In
18:00

ESE
ESE

3 / 7 mph 61 / 61°F 84% 1023 mb
Low level cloud: 48%
Mid level cloud: 44%
High level cloud: 0%
Most Significant Cloud Type: low
62%
0.3 In
Mon 03
Jun
00:00

SW
SW

7 / 15 mph 50 / 47°F 96% 1010 mb
Low level cloud: 22%
Mid level cloud: 74%
High level cloud: 100%
Most Significant Cloud Type: medium
100%
0.0 In
06:00

W
W

4 / 8 mph 53 / 52°F 90% 1024 mb
Low level cloud: 1%
Mid level cloud: 0%
High level cloud: 100%
Most Significant Cloud Type: high
99%
0.0 In
12:00

WSW
WSW

16 / 33 mph 58 / 55°F 84% 1012 mb
Low level cloud: 85%
Mid level cloud: 31%
High level cloud: 55%
Most Significant Cloud Type: low
100%
0.1 In
18:00

W
W

6 / 13 mph 59 / 59°F 91% 1022 mb
Low level cloud: 99%
Mid level cloud: 28%
High level cloud: 8%
Most Significant Cloud Type: low
100%
0.0 In
Tue 04
Jun
00:00

WSW
WSW

7 / 15 mph 52 / 50°F 97% 1016 mb
Low level cloud: 33%
Mid level cloud: 8%
High level cloud: 0%
Most Significant Cloud Type: low
35%
0.1 In
06:00

SW
SW

2 / 3 mph 62 / 62°F 88% 1022 mb
Low level cloud: 4%
Mid level cloud: 1%
High level cloud: 0%
Most Significant Cloud Type: low
4%
0.0 In
12:00

W
W

8 / 18 mph 64 / 64°F 71% 1017 mb
Low level cloud: 83%
Mid level cloud: 7%
High level cloud: 13%
Most Significant Cloud Type: low
86%
0.0 In
18:00

SSW
SSW

8 / 16 mph 66 / 66°F 80% 1019 mb
Low level cloud: 38%
Mid level cloud: 6%
High level cloud: 4%
Most Significant Cloud Type: low
40%
0.0 In
Wed 05
Jun
00:00

NNE
NNE

2 / 4 mph 56 / 57°F 91% 1017 mb
Low level cloud: 2%
Mid level cloud: 46%
High level cloud: 33%
Most Significant Cloud Type: medium
53%
0.0 In
06:00

SW
SW

2 / 5 mph 60 / 60°F 89% 1017 mb
Low level cloud: 46%
Mid level cloud: 9%
High level cloud: 0%
Most Significant Cloud Type: low
48%
0.0 In
12:00

SSE
SSE

8 / 16 mph 63 / 63°F 76% 1016 mb
Low level cloud: 66%
Mid level cloud: 26%
High level cloud: 100%
Most Significant Cloud Type: low
87%
0.0 In
18:00

W
W

4 / 9 mph 64 / 64°F 90% 1013 mb
Low level cloud: 22%
Mid level cloud: 88%
High level cloud: 33%
Most Significant Cloud Type: medium
100%
0.0 In
Thu 06
Jun
00:00

E
E

1 / 3 mph 61 / 61°F 89% 1017 mb
Low level cloud: 0%
Mid level cloud: 9%
High level cloud: 0%
Most Significant Cloud Type: medium
8%
0.0 In
06:00

NNW
NNW

9 / 20 mph 53 / 49°F 97% 1008 mb
Low level cloud: 95%
Mid level cloud: 94%
High level cloud: 57%
Most Significant Cloud Type: low
100%
0.1 In
12:00

SSE
SSE

9 / 18 mph 67 / 67°F 69% 1017 mb
Low level cloud: 37%
Mid level cloud: 22%
High level cloud: 100%
Most Significant Cloud Type: low
56%
0.0 In
18:00

NW
NW

9 / 20 mph 58 / 56°F 79% 1011 mb
Low level cloud: 50%
Mid level cloud: 31%
High level cloud: 4%
Most Significant Cloud Type: low
61%
0.0 In
Fri 07
Jun
00:00

NE
NE

2 / 3 mph 62 / 62°F 87% 1017 mb
Low level cloud: 0%
Mid level cloud: 72%
High level cloud: 100%
Most Significant Cloud Type: medium
75%
0.0 In
06:00

WSW
WSW

8 / 17 mph 48 / 44°F 88% 1014 mb
Low level cloud: 3%
Mid level cloud: 11%
High level cloud: 0%
Most Significant Cloud Type: medium
18%
0.0 In
12:00

N
N

7 / 15 mph 63 / 63°F 87% 1015 mb
Low level cloud: 44%
Mid level cloud: 60%
High level cloud: 100%
Most Significant Cloud Type: low
76%
0.0 In
18:00

W
W

11 / 22 mph 54 / 51°F 76% 1014 mb
Low level cloud: 0%
Mid level cloud: 44%
High level cloud: 1%
Most Significant Cloud Type: medium
44%
0.1 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