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Hounslow 14 Day Long Range Forecast

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

Middlesex, United Kingdom

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

The next 14 day outlook for Hounslow shows the average daytime maximum temperature will be around 6°C, with a high for the two weeks of 12°C expected on the afternoon of Wednesday 1st. The mean minimum temperature will be 2°C, dipping to its lowest on the morning of Thursday 9th at 0°C. Expect the following 14 days ahead to have some days seeing a little precipitation and some days with rain, sleet or snow. The indicators are that Sunday 5th will have the most precipitation with an accumulation of around 33.0mm. On the whole winds are likely to be moderate. The strongest wind will be experienced on the afternoon of Wednesday 1st, coming from a south westerly direction, and reaching around 26mph.

DayLocal TimeDirSpeed/
Gust
Temp/
Feels Like
HumidityPressureCloud AmountPrecip AmountWeather
Wed 01
Jan
15:00

W
W

13 / 17 mph 46 / 40°F 83% 1006 mb
Low level cloud: 93%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.2 In of precipitation over the past 3 hours.
0.2 In
18:00

W
W

13 / 16 mph 45 / 39°F 82% 1008 mb
Low level cloud: 83%
Mid level cloud: 100%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
21:00

WSW
WSW

11 / 14 mph 45 / 39°F 84% 1010 mb
Low level cloud: 67%
Mid level cloud: 100%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Thu 02
Jan
00:00

W
W

8 / 11 mph 43 / 38°F 88% 1011 mb
Low level cloud: 25%
Mid level cloud: 14%
High level cloud: 0%
Most Significant Cloud Type: low
30%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

NNW
NNW

7 / 9 mph 41 / 36°F 85% 1013 mb
Low level cloud: 70%
Mid level cloud: 2%
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

N
N

9 / 12 mph 39 / 33°F 79% 1016 mb
Low level cloud: 64%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
64%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

N
N

9 / 11 mph 36 / 29°F 87% 1018 mb
Low level cloud: 34%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: low
34%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

N
N

10 / 13 mph 40 / 33°F 68% 1020 mb
Low level cloud: 10%
Mid level cloud: 30%
High level cloud: 0%
Most Significant Cloud Type: medium
59%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

NNW
NNW

9 / 11 mph 40 / 34°F 68% 1021 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: medium
2%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

NNW
NNW

7 / 8 mph 39 / 34°F 72% 1023 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

NW
NW

5 / 7 mph 35 / 31°F 72% 1025 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
Fri 03
Jan
00:00

WNW
WNW

5 / 7 mph 34 / 30°F 75% 1026 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
03:00

WNW
WNW

6 / 9 mph 33 / 28°F 72% 1026 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
06:00

WNW
WNW

6 / 9 mph 32 / 27°F 74% 1026 mb
Low level cloud: 0%
Mid level cloud: 1%
High level cloud: 0%
Most Significant Cloud Type: medium
1%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

W
W

6 / 10 mph 33 / 27°F 70% 1026 mb
Low level cloud: 0%
Mid level cloud: 7%
High level cloud: 0%
Most Significant Cloud Type: medium
6%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

WNW
WNW

7 / 9 mph 39 / 33°F 63% 1026 mb
Low level cloud: 0%
Mid level cloud: 9%
High level cloud: 0%
Most Significant Cloud Type: medium
8%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

WNW
WNW

6 / 8 mph 39 / 35°F 71% 1025 mb
Low level cloud: 5%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: low
6%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

W
W

4 / 6 mph 36 / 33°F 82% 1026 mb
Low level cloud: 88%
Mid level cloud: 11%
High level cloud: 0%
Most Significant Cloud Type: low
91%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

WSW
WSW

2 / 4 mph 37 / 35°F 78% 1026 mb
Low level cloud: 86%
Mid level cloud: 8%
High level cloud: 7%
Most Significant Cloud Type: low
89%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sat 04
Jan
00:00

SSW
SSW

3 / 5 mph 37 / 35°F 78% 1025 mb
Low level cloud: 67%
Mid level cloud: 5%
High level cloud: 96%
Most Significant Cloud Type: low
80%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

S
S

3 / 5 mph 36 / 33°F 83% 1023 mb
Low level cloud: 27%
Mid level cloud: 4%
High level cloud: 36%
Most Significant Cloud Type: low
33%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

SE
SE

2 / 4 mph 34 / 33°F 83% 1021 mb
Low level cloud: 4%
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

ESE
ESE

3 / 5 mph 36 / 34°F 80% 1019 mb
Low level cloud: 28%
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

SE
SE

6 / 9 mph 39 / 34°F 67% 1017 mb
Low level cloud: 0%
Mid level cloud: 82%
High level cloud: 95%
Most Significant Cloud Type: medium
85%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

SE
SE

7 / 9 mph 40 / 35°F 63% 1014 mb
Low level cloud: 0%
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
18:00

SE
SE

8 / 9 mph 39 / 33°F 74% 1012 mb
Low level cloud: 11%
Mid level cloud: 87%
High level cloud: 100%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

ESE
ESE

9 / 10 mph 37 / 31°F 87% 1008 mb
Low level cloud: 90%
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
Sun 05
Jan
00:00

E
E

10 / 13 mph 34 / 27°F 97% 1004 mb
Low level cloud: 91%
Mid level cloud: 81%
High level cloud: 99%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
03:00

ENE
ENE

9 / 12 mph 34 / 27°F 99% 1000 mb
Low level cloud: 100%
Mid level cloud: 98%
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

ENE
ENE

8 / 13 mph 35 / 28°F 99% 998 mb
Low level cloud: 100%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.2 In of precipitation over the past 3 hours.
0.2 In
09:00

E
E

8 / 13 mph 37 / 30°F 100% 996 mb
Low level cloud: 100%
Mid level cloud: 97%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.2 In of precipitation over the past 3 hours.
0.2 In
12:00

E
E

4 / 9 mph 37 / 34°F 100% 995 mb
Low level cloud: 100%
Mid level cloud: 45%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
15:00

SSE
SSE

3 / 7 mph 41 / 39°F 100% 993 mb
Low level cloud: 100%
Mid level cloud: 89%
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

SW
SW

11 / 19 mph 48 / 44°F 97% 992 mb
Low level cloud: 100%
Mid level cloud: 96%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.3 In of precipitation over the past 3 hours.
0.3 In
21:00

SW
SW

9 / 16 mph 49 / 45°F 98% 992 mb
Low level cloud: 100%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.2 In of precipitation over the past 3 hours.
0.2 In
Mon 06
Jan
00:00

SW
SW

11 / 21 mph 49 / 44°F 97% 992 mb
Low level cloud: 100%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.3 In of precipitation over the past 3 hours.
0.3 In
03:00

SSW
SSW

14 / 29 mph 48 / 42°F 95% 991 mb
Low level cloud: 100%
Mid level cloud: 45%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
06:00

SSW
SSW

16 / 33 mph 47 / 41°F 92% 990 mb
Low level cloud: 100%
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

13 / 25 mph 49 / 44°F 88% 991 mb
Low level cloud: 95%
Mid level cloud: 21%
High level cloud: 32%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

SSW
SSW

12 / 18 mph 51 / 47°F 90% 990 mb
Low level cloud: 100%
Mid level cloud: 11%
High level cloud: 98%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

SSW
SSW

8 / 9 mph 53 / 50°F 88% 988 mb
Low level cloud: 69%
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
18:00

SE
SE

9 / 10 mph 52 / 49°F 95% 986 mb
Low level cloud: 68%
Mid level cloud: 99%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.3 In of precipitation over the past 3 hours.
0.3 In
21:00

SE
SE

4 / 5 mph 50 / 49°F 98% 984 mb
Low level cloud: 54%
Mid level cloud: 82%
High level cloud: 35%
Most Significant Cloud Type: low
87%
Expect 0.2 In of precipitation over the past 3 hours.
0.2 In
Tue 07
Jan
00:00

SSE
SSE

6 / 9 mph 48 / 45°F 97% 983 mb
Low level cloud: 98%
Mid level cloud: 90%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
03:00

SSW
SSW

12 / 17 mph 47 / 42°F 87% 982 mb
Low level cloud: 87%
Mid level cloud: 15%
High level cloud: 12%
Most Significant Cloud Type: low
93%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

S
S

10 / 13 mph 47 / 42°F 85% 981 mb
Low level cloud: 60%
Mid level cloud: 80%
High level cloud: 3%
Most Significant Cloud Type: low
88%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

S
S

10 / 14 mph 46 / 41°F 85% 980 mb
Low level cloud: 51%
Mid level cloud: 65%
High level cloud: 5%
Most Significant Cloud Type: low
74%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

SSE
SSE

11 / 15 mph 47 / 42°F 82% 976 mb
Low level cloud: 88%
Mid level cloud: 100%
High level cloud: 6%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

WSW
WSW

13 / 15 mph 38 / 30°F 92% 975 mb
Low level cloud: 98%
Mid level cloud: 96%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
18:00

WSW
WSW

8 / 10 mph 38 / 32°F 84% 974 mb
Low level cloud: 95%
Mid level cloud: 32%
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

NW
NW

19 / 26 mph 39 / 29°F 94% 979 mb
Low level cloud: 100%
Mid level cloud: 77%
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
Wed 08
Jan
00:00

NW
NW

7 / 9 mph 39 / 34°F 75% 1019 mb
Low level cloud: 0%
Mid level cloud: 14%
High level cloud: 0%
Most Significant Cloud Type: medium
13%
0.0 In
06:00

WNW
WNW

5 / 6 mph 33 / 28°F 80% 1018 mb
Low level cloud: 0%
Mid level cloud: 60%
High level cloud: 6%
Most Significant Cloud Type: medium
59%
0.0 In
12:00

NW
NW

4 / 5 mph 38 / 35°F 93% 1032 mb
Low level cloud: 13%
Mid level cloud: 1%
High level cloud: 0%
Most Significant Cloud Type: low
13%
0.0 In
18:00

NW
NW

6 / 7 mph 44 / 40°F 85% 1023 mb
Low level cloud: 16%
Mid level cloud: 19%
High level cloud: 0%
Most Significant Cloud Type: low
22%
0.0 In
Thu 09
Jan
00:00

W
W

5 / 9 mph 42 / 39°F 79% 1012 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
06:00

NW
NW

5 / 6 mph 29 / 23°F 92% 1014 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: medium
1%
0.0 In
12:00

WSW
WSW

5 / 8 mph 41 / 38°F 69% 1005 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: medium
2%
0.0 In
18:00

W
W

9 / 15 mph 44 / 38°F 77% 1010 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: medium
5%
0.0 In
Fri 10
Jan
00:00

WSW
WSW

9 / 13 mph 35 / 29°F 79% 1005 mb
Low level cloud: 0%
Mid level cloud: 27%
High level cloud: 0%
Most Significant Cloud Type: medium
26%
0.0 In
06:00

W
W

9 / 15 mph 36 / 29°F 77% 1017 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 7%
Most Significant Cloud Type: medium
4%
0.0 In
12:00

W
W

7 / 11 mph 37 / 31°F 85% 1006 mb
Low level cloud: 91%
Mid level cloud: 46%
High level cloud: 8%
Most Significant Cloud Type: low
100%
0.0 In
18:00

WSW
WSW

3 / 5 mph 42 / 40°F 80% 1018 mb
Low level cloud: 0%
Mid level cloud: 98%
High level cloud: 32%
Most Significant Cloud Type: medium
99%
0.0 In
Sat 11
Jan
00:00

NNW
NNW

4 / 6 mph 38 / 35°F 86% 1006 mb
Low level cloud: 43%
Mid level cloud: 5%
High level cloud: 92%
Most Significant Cloud Type: low
56%
0.0 In
06:00

E
E

4 / 6 mph 36 / 33°F 93% 1015 mb
Low level cloud: 71%
Mid level cloud: 46%
High level cloud: 100%
Most Significant Cloud Type: low
98%
0.0 In
12:00

E
E

7 / 11 mph 39 / 34°F 81% 1012 mb
Low level cloud: 37%
Mid level cloud: 4%
High level cloud: 57%
Most Significant Cloud Type: low
45%
0.0 In
18:00

N
N

9 / 15 mph 40 / 34°F 88% 1019 mb
Low level cloud: 9%
Mid level cloud: 83%
High level cloud: 0%
Most Significant Cloud Type: medium
100%
0.2 In
Sun 12
Jan
00:00

ENE
ENE

6 / 9 mph 37 / 32°F 80% 1018 mb
Low level cloud: 2%
Mid level cloud: 46%
High level cloud: 26%
Most Significant Cloud Type: medium
51%
0.0 In
06:00

NNE
NNE

8 / 13 mph 36 / 30°F 72% 1035 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: medium
3%
0.0 In
12:00

ENE
ENE

8 / 13 mph 42 / 37°F 67% 1025 mb
Low level cloud: 11%
Mid level cloud: 1%
High level cloud: 0%
Most Significant Cloud Type: low
10%
0.0 In
18:00

NW
NW

4 / 6 mph 46 / 44°F 92% 1041 mb
Low level cloud: 6%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
5%
0.0 In
Mon 13
Jan
00:00

ENE
ENE

6 / 10 mph 41 / 37°F 80% 1032 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
06:00

ESE
ESE

1 / 2 mph 39 / 39°F 91% 1042 mb
Low level cloud: 13%
Mid level cloud: 0%
High level cloud: 12%
Most Significant Cloud Type: low
14%
0.0 In
12:00

ESE
ESE

8 / 12 mph 41 / 36°F 54% 1035 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
18:00

SSE
SSE

5 / 8 mph 39 / 35°F 89% 1041 mb
Low level cloud: 0%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: medium
100%
0.0 In
Tue 14
Jan
00:00

ESE
ESE

7 / 11 mph 37 / 31°F 56% 1035 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 32%
Most Significant Cloud Type: high
31%
0.0 In
06:00

SSE
SSE

4 / 6 mph 38 / 36°F 89% 1038 mb
Low level cloud: 24%
Mid level cloud: 39%
High level cloud: 14%
Most Significant Cloud Type: low
39%
0.0 In
12:00

ESE
ESE

9 / 13 mph 38 / 33°F 47% 1033 mb
Low level cloud: 0%
Mid level cloud: 44%
High level cloud: 12%
Most Significant Cloud Type: medium
44%
0.0 In
18:00

S
S

5 / 8 mph 43 / 40°F 84% 1036 mb
Low level cloud: 0%
Mid level cloud: 45%
High level cloud: 100%
Most Significant Cloud Type: medium
48%
0.0 In
Wed 15
Jan
00:00

ESE
ESE

8 / 12 mph 36 / 30°F 59% 1028 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 32%
Most Significant Cloud Type: high
32%
0.0 In
06:00

SSE
SSE

5 / 9 mph 38 / 34°F 80% 1036 mb
Low level cloud: 70%
Mid level cloud: 97%
High level cloud: 19%
Most Significant Cloud Type: low
100%
0.0 In
12:00

ESE
ESE

7 / 11 mph 42 / 37°F 53% 1026 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 11%
Most Significant Cloud Type: medium
3%
0.0 In
18:00

SE
SE

5 / 8 mph 43 / 40°F 84% 1038 mb
Low level cloud: 33%
Mid level cloud: 31%
High level cloud: 0%
Most Significant Cloud Type: low
43%
0.0 In
Thu 16
Jan
00:00

ESE
ESE

5 / 7 mph 43 / 40°F 84% 1025 mb
Low level cloud: 0%
Mid level cloud: 20%
High level cloud: 0%
Most Significant Cloud Type: medium
20%
0.0 In
06:00

ESE
ESE

4 / 7 mph 40 / 37°F 85% 1040 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
12:00

ESE
ESE

5 / 9 mph 41 / 38°F 99% 1022 mb
Low level cloud: 98%
Mid level cloud: 46%
High level cloud: 33%
Most Significant Cloud Type: low
100%
0.0 In
18:00

E
E

3 / 5 mph 49 / 48°F 73% 1041 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: medium
2%
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