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Earlsfield 14 Day Long Range Forecast

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

Wandsworth, United Kingdom

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

Over the next 14 days the Earlsfield forecast suggests the average daytime maximum temperature will be around 14°C, with a high for the two weeks of 17°C expected on the afternoon of Friday 17th. The mean minimum temperature will be 11°C, dipping to its lowest on the morning of Sunday 26th at 7°C. Expect the next 14 days have some days seeing a little precipitation and some days with rain. Predictions are Thursday 23rd will have the most precipitation with an accumulation of around 11.0mm. On the whole winds are likely to be moderate.

DayLocal TimeDirSpeed/
Gust
Temp/
Feels Like
HumidityPressureCloud AmountPrecip AmountWeather
Thu 16
Oct
12:00

NE
NE

5 / 6 mph 60 / 59°F 57% 1027 mb
Low level cloud: 19%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
19%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

NE
NE

6 / 7 mph 61 / 60°F 54% 1026 mb
Low level cloud: 33%
Mid level cloud: 0%
High level cloud: 2%
Most Significant Cloud Type: low
32%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

NE
NE

4 / 5 mph 61 / 60°F 68% 1027 mb
Low level cloud: 25%
Mid level cloud: 0%
High level cloud: 4%
Most Significant Cloud Type: low
25%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

NE
NE

4 / 4 mph 58 / 58°F 75% 1027 mb
Low level cloud: 70%
Mid level cloud: 0%
High level cloud: 15%
Most Significant Cloud Type: low
72%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Fri 17
Oct
00:00

NE
NE

4 / 5 mph 57 / 57°F 81% 1027 mb
Low level cloud: 4%
Mid level cloud: 0%
High level cloud: 14%
Most Significant Cloud Type: low
5%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

NE
NE

4 / 5 mph 53 / 53°F 84% 1026 mb
Low level cloud: 15%
Mid level cloud: 1%
High level cloud: 18%
Most Significant Cloud Type: low
17%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

NNE
NNE

4 / 5 mph 51 / 51°F 84% 1026 mb
Low level cloud: 14%
Mid level cloud: 1%
High level cloud: 20%
Most Significant Cloud Type: low
17%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

NE
NE

5 / 6 mph 54 / 53°F 68% 1027 mb
Low level cloud: 7%
Mid level cloud: 1%
High level cloud: 19%
Most Significant Cloud Type: low
9%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

NE
NE

4 / 5 mph 61 / 60°F 53% 1026 mb
Low level cloud: 0%
Mid level cloud: 1%
High level cloud: 9%
Most Significant Cloud Type: high
9%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

NE
NE

4 / 6 mph 62 / 61°F 50% 1025 mb
Low level cloud: 15%
Mid level cloud: 0%
High level cloud: 3%
Most Significant Cloud Type: low
15%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

ENE
ENE

5 / 6 mph 59 / 59°F 60% 1026 mb
Low level cloud: 27%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
27%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

E
E

4 / 5 mph 56 / 56°F 73% 1026 mb
Low level cloud: 42%
Mid level cloud: 0%
High level cloud: 16%
Most Significant Cloud Type: low
43%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sat 18
Oct
00:00

E
E

5 / 9 mph 54 / 53°F 74% 1026 mb
Low level cloud: 49%
Mid level cloud: 0%
High level cloud: 19%
Most Significant Cloud Type: low
50%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

E
E

6 / 9 mph 54 / 53°F 66% 1026 mb
Low level cloud: 13%
Mid level cloud: 0%
High level cloud: 22%
Most Significant Cloud Type: low
15%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

ENE
ENE

4 / 6 mph 52 / 52°F 73% 1025 mb
Low level cloud: 44%
Mid level cloud: 0%
High level cloud: 100%
Most Significant Cloud Type: low
55%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

SE
SE

8 / 11 mph 55 / 52°F 68% 1025 mb
Low level cloud: 10%
Mid level cloud: 0%
High level cloud: 19%
Most Significant Cloud Type: low
12%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

ESE
ESE

10 / 13 mph 58 / 55°F 51% 1023 mb
Low level cloud: 24%
Mid level cloud: 0%
High level cloud: 100%
Most Significant Cloud Type: low
36%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

ESE
ESE

9 / 11 mph 59 / 57°F 52% 1021 mb
Low level cloud: 4%
Mid level cloud: 0%
High level cloud: 94%
Most Significant Cloud Type: medium
14%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

ESE
ESE

8 / 9 mph 58 / 57°F 58% 1020 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
21:00

ESE
ESE

7 / 10 mph 56 / 55°F 58% 1018 mb
Low level cloud: 0%
Mid level cloud: 49%
High level cloud: 100%
Most Significant Cloud Type: medium
52%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sun 19
Oct
00:00

SE
SE

8 / 11 mph 55 / 53°F 66% 1016 mb
Low level cloud: 0%
Mid level cloud: 50%
High level cloud: 100%
Most Significant Cloud Type: medium
54%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

SSE
SSE

7 / 10 mph 55 / 53°F 72% 1013 mb
Low level cloud: 0%
Mid level cloud: 51%
High level cloud: 100%
Most Significant Cloud Type: medium
55%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

SE
SE

8 / 11 mph 54 / 52°F 74% 1010 mb
Low level cloud: 0%
Mid level cloud: 72%
High level cloud: 100%
Most Significant Cloud Type: medium
75%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

SSE
SSE

10 / 15 mph 56 / 53°F 71% 1007 mb
Low level cloud: 11%
Mid level cloud: 91%
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

SSE
SSE

13 / 17 mph 57 / 54°F 86% 1004 mb
Low level cloud: 96%
Mid level cloud: 98%
High level cloud: 11%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

S
S

12 / 16 mph 58 / 56°F 90% 1002 mb
Low level cloud: 100%
Mid level cloud: 97%
High level cloud: 85%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

S
S

11 / 13 mph 58 / 56°F 93% 1000 mb
Low level cloud: 99%
Mid level cloud: 84%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
21:00

SSE
SSE

9 / 15 mph 57 / 55°F 96% 997 mb
Low level cloud: 100%
Mid level cloud: 82%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
Mon 20
Oct
00:00

S
S

10 / 15 mph 57 / 55°F 95% 993 mb
Low level cloud: 100%
Mid level cloud: 82%
High level cloud: 98%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
03:00

SW
SW

11 / 16 mph 58 / 56°F 91% 991 mb
Low level cloud: 82%
Mid level cloud: 25%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.2 In of precipitation over the past 3 hours.
0.2 In
06:00

SW
SW

8 / 11 mph 55 / 52°F 90% 991 mb
Low level cloud: 65%
Mid level cloud: 46%
High level cloud: 0%
Most Significant Cloud Type: low
81%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

SW
SW

10 / 13 mph 57 / 54°F 83% 991 mb
Low level cloud: 40%
Mid level cloud: 10%
High level cloud: 10%
Most Significant Cloud Type: low
44%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

SSW
SSW

12 / 15 mph 60 / 60°F 66% 990 mb
Low level cloud: 86%
Mid level cloud: 44%
High level cloud: 34%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

SSW
SSW

13 / 18 mph 57 / 54°F 81% 989 mb
Low level cloud: 51%
Mid level cloud: 29%
High level cloud: 21%
Most Significant Cloud Type: low
63%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
18:00

SW
SW

13 / 17 mph 55 / 52°F 80% 990 mb
Low level cloud: 30%
Mid level cloud: 56%
High level cloud: 31%
Most Significant Cloud Type: low
53%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

WSW
WSW

11 / 14 mph 53 / 50°F 84% 991 mb
Low level cloud: 29%
Mid level cloud: 25%
High level cloud: 33%
Most Significant Cloud Type: low
41%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Tue 21
Oct
00:00

WSW
WSW

9 / 10 mph 54 / 51°F 89% 992 mb
Low level cloud: 55%
Mid level cloud: 9%
High level cloud: 21%
Most Significant Cloud Type: low
60%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

SW
SW

9 / 13 mph 53 / 49°F 87% 992 mb
Low level cloud: 38%
Mid level cloud: 43%
High level cloud: 32%
Most Significant Cloud Type: low
57%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

SW
SW

9 / 14 mph 51 / 48°F 87% 992 mb
Low level cloud: 63%
Mid level cloud: 86%
High level cloud: 14%
Most Significant Cloud Type: low
94%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

SW
SW

10 / 15 mph 54 / 51°F 75% 993 mb
Low level cloud: 30%
Mid level cloud: 83%
High level cloud: 11%
Most Significant Cloud Type: low
59%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

WSW
WSW

14 / 18 mph 57 / 54°F 77% 993 mb
Low level cloud: 68%
Mid level cloud: 45%
High level cloud: 0%
Most Significant Cloud Type: low
84%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

WSW
WSW

13 / 16 mph 59 / 56°F 69% 994 mb
Low level cloud: 59%
Mid level cloud: 31%
High level cloud: 0%
Most Significant Cloud Type: low
69%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

WSW
WSW

13 / 15 mph 57 / 55°F 76% 996 mb
Low level cloud: 61%
Mid level cloud: 45%
High level cloud: 1%
Most Significant Cloud Type: low
76%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

WSW
WSW

13 / 14 mph 55 / 52°F 75% 998 mb
Low level cloud: 33%
Mid level cloud: 18%
High level cloud: 15%
Most Significant Cloud Type: low
41%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Wed 22
Oct
00:00

SW
SW

11 / 15 mph 53 / 49°F 78% 998 mb
Low level cloud: 15%
Mid level cloud: 30%
High level cloud: 19%
Most Significant Cloud Type: low
27%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

SW
SW

9 / 14 mph 52 / 49°F 81% 997 mb
Low level cloud: 9%
Mid level cloud: 45%
High level cloud: 32%
Most Significant Cloud Type: medium
72%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

S
S

11 / 17 mph 53 / 50°F 88% 994 mb
Low level cloud: 97%
Mid level cloud: 79%
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

SSW
SSW

16 / 25 mph 56 / 53°F 95% 991 mb
Low level cloud: 100%
Mid level cloud: 64%
High level cloud: 96%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
12:00

SW
SW

17 / 25 mph 60 / 60°F 89% 989 mb
Low level cloud: 99%
Mid level cloud: 44%
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

SW
SW

16 / 22 mph 60 / 60°F 81% 988 mb
Low level cloud: 91%
Mid level cloud: 6%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

WNW
WNW

12 / 15 mph 54 / 51°F 77% 994 mb
Low level cloud: 51%
Mid level cloud: 11%
High level cloud: 100%
Most Significant Cloud Type: low
66%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

WSW
WSW

8 / 11 mph 52 / 49°F 86% 997 mb
Low level cloud: 38%
Mid level cloud: 11%
High level cloud: 11%
Most Significant Cloud Type: low
42%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
DayLocal TimeDirSpeed/
Gust
Temp/
Feels Like
HumidityPressureCloud AmountPrecip AmountWeather
Thu 23
Oct
00:00

WSW
WSW

16 / 28 mph 53 / 49°F 77% 995 mb
Low level cloud: 51%
Mid level cloud: 14%
High level cloud: 15%
Most Significant Cloud Type: low
57%
0.0 In
06:00

SSE
SSE

7 / 12 mph 59 / 58°F 96% 998 mb
Low level cloud: 98%
Mid level cloud: 49%
High level cloud: 33%
Most Significant Cloud Type: low
100%
0.0 In
12:00

SSW
SSW

7 / 13 mph 60 / 60°F 59% 1011 mb
Low level cloud: 14%
Mid level cloud: 23%
High level cloud: 89%
Most Significant Cloud Type: low
32%
0.0 In
18:00

WSW
WSW

17 / 30 mph 63 / 63°F 72% 1005 mb
Low level cloud: 86%
Mid level cloud: 0%
High level cloud: 71%
Most Significant Cloud Type: low
94%
0.0 In
Fri 24
Oct
00:00

SW
SW

9 / 18 mph 56 / 53°F 78% 1005 mb
Low level cloud: 13%
Mid level cloud: 44%
High level cloud: 0%
Most Significant Cloud Type: medium
80%
0.0 In
06:00

SW
SW

10 / 20 mph 55 / 52°F 69% 1009 mb
Low level cloud: 0%
Mid level cloud: 9%
High level cloud: 28%
Most Significant Cloud Type: medium
10%
0.0 In
12:00

WSW
WSW

14 / 27 mph 56 / 53°F 54% 1007 mb
Low level cloud: 43%
Mid level cloud: 19%
High level cloud: 8%
Most Significant Cloud Type: low
50%
0.0 In
18:00

WSW
WSW

10 / 19 mph 62 / 62°F 74% 1005 mb
Low level cloud: 8%
Mid level cloud: 14%
High level cloud: 0%
Most Significant Cloud Type: low
12%
0.0 In
Sat 25
Oct
00:00

SW
SW

13 / 25 mph 54 / 50°F 66% 1011 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 9%
Most Significant Cloud Type: medium
6%
0.0 In
06:00

WSW
WSW

6 / 11 mph 49 / 47°F 86% 1006 mb
Low level cloud: 42%
Mid level cloud: 100%
High level cloud: 0%
Most Significant Cloud Type: low
76%
0.0 In
12:00

SSW
SSW

19 / 38 mph 60 / 60°F 75% 1005 mb
Low level cloud: 100%
Mid level cloud: 45%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.0 In
18:00

WSW
WSW

14 / 28 mph 54 / 50°F 69% 1007 mb
Low level cloud: 13%
Mid level cloud: 22%
High level cloud: 0%
Most Significant Cloud Type: low
21%
0.0 In
Sun 26
Oct
00:00

SSW
SSW

14 / 29 mph 57 / 53°F 92% 1002 mb
Low level cloud: 100%
Mid level cloud: 83%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.1 In
06:00

SW
SW

2 / 5 mph 52 / 53°F 85% 1007 mb
Low level cloud: 11%
Mid level cloud: 30%
High level cloud: 0%
Most Significant Cloud Type: low
21%
0.0 In
12:00

SSW
SSW

20 / 42 mph 61 / 61°F 71% 999 mb
Low level cloud: 60%
Mid level cloud: 29%
High level cloud: 100%
Most Significant Cloud Type: low
81%
0.4 In
18:00

WNW
WNW

7 / 15 mph 51 / 48°F 80% 1007 mb
Low level cloud: 76%
Mid level cloud: 32%
High level cloud: 0%
Most Significant Cloud Type: low
87%
0.1 In
Mon 27
Oct
00:00

SW
SW

15 / 32 mph 50 / 45°F 73% 1005 mb
Low level cloud: 62%
Mid level cloud: 6%
High level cloud: 67%
Most Significant Cloud Type: low
72%
0.0 In
06:00

NW
NW

9 / 17 mph 43 / 37°F 68% 1014 mb
Low level cloud: 0%
Mid level cloud: 47%
High level cloud: 0%
Most Significant Cloud Type: medium
46%
0.0 In
12:00

W
W

12 / 26 mph 54 / 51°F 70% 1013 mb
Low level cloud: 91%
Mid level cloud: 10%
High level cloud: 0%
Most Significant Cloud Type: low
94%
0.0 In
18:00

NW
NW

10 / 21 mph 48 / 43°F 60% 1022 mb
Low level cloud: 21%
Mid level cloud: 100%
High level cloud: 0%
Most Significant Cloud Type: medium
100%
0.0 In
Tue 28
Oct
00:00

NNE
NNE

6 / 12 mph 56 / 55°F 67% 1027 mb
Low level cloud: 0%
Mid level cloud: 8%
High level cloud: 5%
Most Significant Cloud Type: medium
8%
0.0 In
06:00

W
W

6 / 11 mph 44 / 41°F 67% 1027 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 6%
Most Significant Cloud Type: medium
4%
0.0 In
12:00

E
E

6 / 12 mph 58 / 57°F 50% 1030 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: medium
3%
0.0 In
18:00

SW
SW

12 / 23 mph 48 / 43°F 65% 1024 mb
Low level cloud: 71%
Mid level cloud: 46%
High level cloud: 66%
Most Significant Cloud Type: low
95%
0.0 In
Wed 29
Oct
00:00

E
E

2 / 4 mph 57 / 59°F 67% 1027 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
06:00

W
W

16 / 31 mph 53 / 48°F 80% 1017 mb
Low level cloud: 100%
Mid level cloud: 76%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.1 In
12:00

NE
NE

3 / 6 mph 58 / 59°F 49% 1022 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 1%
Most Significant Cloud Type: high
1%
0.0 In
18:00

WNW
WNW

15 / 31 mph 57 / 54°F 81% 1019 mb
Low level cloud: 97%
Mid level cloud: 20%
High level cloud: 53%
Most Significant Cloud Type: low
100%
0.0 In
Thu 30
Oct
00:00

NE
NE

6 / 12 mph 54 / 52°F 68% 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

WNW
WNW

12 / 24 mph 57 / 54°F 84% 1023 mb
Low level cloud: 95%
Mid level cloud: 43%
High level cloud: 2%
Most Significant Cloud Type: low
100%
0.0 In
12:00

ENE
ENE

6 / 13 mph 51 / 48°F 95% 1009 mb
Low level cloud: 75%
Mid level cloud: 93%
High level cloud: 21%
Most Significant Cloud Type: low
100%
0.1 In
18:00

W
W

7 / 14 mph 62 / 62°F 78% 1025 mb
Low level cloud: 78%
Mid level cloud: 0%
High level cloud: 98%
Most Significant Cloud Type: low
89%
0.0 In
Fri 31
Oct
00:00

W
W

3 / 6 mph 49 / 49°F 94% 1005 mb
Low level cloud: 96%
Mid level cloud: 92%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.2 In
06:00

W
W

11 / 21 mph 52 / 48°F 85% 1023 mb
Low level cloud: 89%
Mid level cloud: 46%
High level cloud: 32%
Most Significant Cloud Type: low
100%
0.0 In
12:00

WNW
WNW

7 / 15 mph 50 / 47°F 82% 1004 mb
Low level cloud: 82%
Mid level cloud: 43%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.1 In
18:00

NW
NW

5 / 10 mph 67 / 67°F 65% 1026 mb
Low level cloud: 7%
Mid level cloud: 0%
High level cloud: 51%
Most Significant Cloud Type: low
13%
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