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Petaling Jaya 14 Day Long Range Forecast

14 Day weather providing an extended long range forecast outlook for Petaling Jaya

Malaysia

Long range weather outlook for Petaling Jaya includes 14 day forecast summary:

Reviewing the forecast for Petaling Jaya Over the next 14 days and the average daytime maximum temperature will be around 30°C, with a high for the two weeks of 33°C expected on the afternoon of Tuesday 31st. The mean minimum temperature will be 23°C, dipping to its lowest on the morning of Friday 27th at 22°C. The next 14 days will have some days seeing a little precipitation and some days with rain. It looks like Thursday 26th will have the most precipitation with an accumulation of around 30.0mm. On the whole winds are likely to be light.

DayLocal TimeDirSpeed/
Gust		Temp/
Feels Like		HumidityPressureCloud AmountPrecip AmountWeather
Sun 22
Dec		17:00

SW
SW

 2 / 3 mph 88 / 96°F 81% 1007 mb
Low level cloud: 28%
Mid level cloud: 24%
High level cloud: 18%
Most Significant Cloud Type: low
38%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
20:00

S
S

 1 / 1 mph 80 / 89°F 91% 1008 mb
Low level cloud: 8%
Mid level cloud: 22%
High level cloud: 15%
Most Significant Cloud Type: low
17%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
23:00

E
E

 2 / 3 mph 77 / 82°F 94% 1010 mb
Low level cloud: 26%
Mid level cloud: 31%
High level cloud: 19%
Most Significant Cloud Type: low
38%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
Mon 23
Dec		02:00

E
E

 2 / 5 mph 75 / 79°F 94% 1010 mb
Low level cloud: 22%
Mid level cloud: 23%
High level cloud: 17%
Most Significant Cloud Type: low
31%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
05:00

ENE
ENE

 2 / 4 mph 74 / 79°F 93% 1008 mb
Low level cloud: 20%
Mid level cloud: 22%
High level cloud: 32%
Most Significant Cloud Type: low
31%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
08:00

E
E

 2 / 4 mph 78 / 79°F 92% 1009 mb
Low level cloud: 14%
Mid level cloud: 21%
High level cloud: 33%
Most Significant Cloud Type: low
25%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
11:00

E
E

 2 / 3 mph 84 / 87°F 82% 1010 mb
Low level cloud: 17%
Mid level cloud: 20%
High level cloud: 10%
Most Significant Cloud Type: low
24%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
14:00

SW
SW

 4 / 6 mph 87 / 93°F 75% 1009 mb
Low level cloud: 25%
Mid level cloud: 24%
High level cloud: 4%
Most Significant Cloud Type: low
34%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
17:00

SSW
SSW

 4 / 6 mph 87 / 94°F 77% 1007 mb
Low level cloud: 54%
Mid level cloud: 29%
High level cloud: 7%
Most Significant Cloud Type: low
64%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
20:00

SE
SE

 2 / 3 mph 78 / 85°F 91% 1008 mb
Low level cloud: 3%
Mid level cloud: 46%
High level cloud: 14%
Most Significant Cloud Type: medium
53%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
23:00

SE
SE

 2 / 4 mph 76 / 81°F 92% 1010 mb
Low level cloud: 6%
Mid level cloud: 44%
High level cloud: 21%
Most Significant Cloud Type: medium
61%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
Tue 24
Dec		02:00

SSE
SSE

 3 / 6 mph 74 / 79°F 94% 1010 mb
Low level cloud: 70%
Mid level cloud: 64%
High level cloud: 33%
Most Significant Cloud Type: low
96%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
05:00

SSE
SSE

 4 / 7 mph 74 / 78°F 96% 1008 mb
Low level cloud: 31%
Mid level cloud: 53%
High level cloud: 33%
Most Significant Cloud Type: low
53%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
08:00

E
E

 4 / 7 mph 77 / 78°F 94% 1010 mb
Low level cloud: 12%
Mid level cloud: 32%
High level cloud: 10%
Most Significant Cloud Type: low
24%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
11:00

SE
SE

 4 / 5 mph 80 / 82°F 88% 1011 mb
Low level cloud: 24%
Mid level cloud: 35%
High level cloud: 35%
Most Significant Cloud Type: low
41%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
14:00

S
S

 6 / 6 mph 85 / 89°F 73% 1009 mb
Low level cloud: 62%
Mid level cloud: 46%
High level cloud: 21%
Most Significant Cloud Type: low
80%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
17:00

SSW
SSW

 6 / 7 mph 86 / 89°F 73% 1007 mb
Low level cloud: 40%
Mid level cloud: 20%
High level cloud: 31%
Most Significant Cloud Type: low
50%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
20:00

SSE
SSE

 3 / 4 mph 78 / 84°F 87% 1009 mb
Low level cloud: 20%
Mid level cloud: 27%
High level cloud: 34%
Most Significant Cloud Type: low
33%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
23:00

E
E

 2 / 3 mph 76 / 80°F 87% 1011 mb
Low level cloud: 21%
Mid level cloud: 44%
High level cloud: 21%
Most Significant Cloud Type: low
38%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Wed 25
Dec		02:00

ENE
ENE

 2 / 3 mph 75 / 79°F 88% 1010 mb
Low level cloud: 39%
Mid level cloud: 71%
High level cloud: 20%
Most Significant Cloud Type: low
66%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
05:00

NNE
NNE

 1 / 1 mph 75 / 79°F 89% 1009 mb
Low level cloud: 53%
Mid level cloud: 89%
High level cloud: 32%
Most Significant Cloud Type: low
88%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
08:00

NE
NE

 1 / 2 mph 79 / 79°F 89% 1010 mb
Low level cloud: 51%
Mid level cloud: 45%
High level cloud: 8%
Most Significant Cloud Type: low
67%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
11:00

WSW
WSW

 1 / 1 mph 86 / 89°F 73% 1011 mb
Low level cloud: 29%
Mid level cloud: 46%
High level cloud: 32%
Most Significant Cloud Type: low
49%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
14:00

W
W

 6 / 11 mph 83 / 91°F 77% 1009 mb
Low level cloud: 87%
Mid level cloud: 46%
High level cloud: 11%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
17:00

W
W

 6 / 10 mph 85 / 90°F 86% 1008 mb
Low level cloud: 54%
Mid level cloud: 45%
High level cloud: 22%
Most Significant Cloud Type: low
72%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
20:00

SE
SE

 3 / 4 mph 78 / 83°F 94% 1010 mb
Low level cloud: 24%
Mid level cloud: 44%
High level cloud: 53%
Most Significant Cloud Type: low
45%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
23:00

SE
SE

 4 / 7 mph 76 / 80°F 94% 1012 mb
Low level cloud: 35%
Mid level cloud: 79%
High level cloud: 40%
Most Significant Cloud Type: low
67%
Expect 0.2 In of precipitation over the past 3 hours.
0.2 In
Thu 26
Dec		02:00

SE
SE

 4 / 6 mph 75 / 80°F 96% 1011 mb
Low level cloud: 67%
Mid level cloud: 52%
High level cloud: 32%
Most Significant Cloud Type: low
89%
Expect 0.2 In of precipitation over the past 3 hours.
0.2 In
05:00

E
E

 1 / 2 mph 74 / 78°F 96% 1009 mb
Low level cloud: 72%
Mid level cloud: 54%
High level cloud: 17%
Most Significant Cloud Type: low
93%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
08:00

ESE
ESE

 1 / 1 mph 74 / 79°F 98% 1011 mb
Low level cloud: 78%
Mid level cloud: 46%
High level cloud: 75%
Most Significant Cloud Type: low
100%
Expect 0.4 In of precipitation over the past 3 hours.
0.4 In
11:00

SSW
SSW

 1 / 1 mph 77 / 81°F 96% 1013 mb
Low level cloud: 77%
Mid level cloud: 45%
High level cloud: 22%
Most Significant Cloud Type: low
95%
Expect 0.4 In of precipitation over the past 3 hours.
0.4 In
14:00

W
W

 3 / 4 mph 79 / 83°F 94% 1012 mb
Low level cloud: 65%
Mid level cloud: 46%
High level cloud: 33%
Most Significant Cloud Type: low
85%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
17:00

SSW
SSW

 1 / 1 mph 79 / 83°F 96% 1010 mb
Low level cloud: 62%
Mid level cloud: 50%
High level cloud: 36%
Most Significant Cloud Type: low
83%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
20:00

S
S

 1 / 1 mph 77 / 83°F 97% 1011 mb
Low level cloud: 60%
Mid level cloud: 47%
High level cloud: 38%
Most Significant Cloud Type: low
80%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
23:00

ENE
ENE

 1 / 1 mph 76 / 81°F 96% 1013 mb
Low level cloud: 44%
Mid level cloud: 39%
High level cloud: 34%
Most Significant Cloud Type: low
61%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Fri 27
Dec		02:00

E
E

 2 / 2 mph 75 / 79°F 96% 1012 mb
Low level cloud: 43%
Mid level cloud: 43%
High level cloud: 33%
Most Significant Cloud Type: low
61%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
05:00

E
E

 2 / 2 mph 73 / 78°F 95% 1010 mb
Low level cloud: 36%
Mid level cloud: 43%
High level cloud: 18%
Most Significant Cloud Type: low
53%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
08:00

E
E

 2 / 4 mph 77 / 78°F 94% 1012 mb
Low level cloud: 36%
Mid level cloud: 37%
High level cloud: 22%
Most Significant Cloud Type: low
51%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
11:00

SSE
SSE

 2 / 2 mph 85 / 88°F 78% 1013 mb
Low level cloud: 31%
Mid level cloud: 33%
High level cloud: 31%
Most Significant Cloud Type: low
45%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
14:00

S
S

 1 / 2 mph 87 / 92°F 77% 1011 mb
Low level cloud: 49%
Mid level cloud: 45%
High level cloud: 38%
Most Significant Cloud Type: low
69%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
17:00

N
N

 1 / 2 mph 83 / 87°F 90% 1009 mb
Low level cloud: 22%
Mid level cloud: 50%
High level cloud: 79%
Most Significant Cloud Type: low
48%
Expect 0.3 In of precipitation over the past 3 hours.
0.3 In
20:00

NNW
NNW

 1 / 2 mph 77 / 83°F 95% 1011 mb
Low level cloud: 18%
Mid level cloud: 44%
High level cloud: 100%
Most Significant Cloud Type: low
45%
Expect 0.2 In of precipitation over the past 3 hours.
0.2 In
23:00

NE
NE

 2 / 4 mph 75 / 80°F 94% 1012 mb
Low level cloud: 8%
Mid level cloud: 51%
High level cloud: 93%
Most Significant Cloud Type: medium
76%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sat 28
Dec		02:00

NE
NE

 2 / 4 mph 75 / 79°F 92% 1011 mb
Low level cloud: 2%
Mid level cloud: 44%
High level cloud: 64%
Most Significant Cloud Type: medium
51%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
05:00

ENE
ENE

 2 / 3 mph 74 / 79°F 92% 1009 mb
Low level cloud: 2%
Mid level cloud: 46%
High level cloud: 20%
Most Significant Cloud Type: medium
53%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
08:00

E
E

 2 / 3 mph 78 / 79°F 91% 1011 mb
Low level cloud: 6%
Mid level cloud: 31%
High level cloud: 21%
Most Significant Cloud Type: medium
47%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
11:00

SE
SE

 0 / 1 mph 87 / 90°F 75% 1012 mb
Low level cloud: 9%
Mid level cloud: 29%
High level cloud: 20%
Most Significant Cloud Type: medium
54%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
14:00

SSW
SSW

 2 / 4 mph 87 / 92°F 72% 1010 mb
Low level cloud: 12%
Mid level cloud: 39%
High level cloud: 29%
Most Significant Cloud Type: medium
73%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
17:00

WNW
WNW

 2 / 3 mph 88 / 94°F 78% 1008 mb
Low level cloud: 32%
Mid level cloud: 46%
High level cloud: 18%
Most Significant Cloud Type: low
50%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
20:00

NNW
NNW

 2 / 4 mph 79 / 85°F 90% 1009 mb
Low level cloud: 7%
Mid level cloud: 46%
High level cloud: 18%
Most Significant Cloud Type: medium
66%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
23:00

NNE
NNE

 2 / 4 mph 77 / 82°F 92% 1011 mb
Low level cloud: 2%
Mid level cloud: 51%
High level cloud: 21%
Most Significant Cloud Type: medium
58%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
DayLocal TimeDirSpeed/
Gust		Temp/
Feels Like		HumidityPressureCloud AmountPrecip AmountWeather
Sun 29
Dec		02:00

N
N

 2 / 5 mph 81 / 89°F 89% 1010 mb
Low level cloud: 1%
Mid level cloud: 32%
High level cloud: 34%
Most Significant Cloud Type: medium
35%
0.0 In
08:00

NE
NE

 2 / 5 mph 78 / 84°F 89% 1010 mb
Low level cloud: 8%
Mid level cloud: 45%
High level cloud: 7%
Most Significant Cloud Type: medium
66%
0.0 In
14:00

WNW
WNW

 4 / 9 mph 89 / 99°F 64% 1009 mb
Low level cloud: 0%
Mid level cloud: 46%
High level cloud: 9%
Most Significant Cloud Type: medium
46%
0.0 In
20:00

NNW
NNW

 3 / 5 mph 82 / 92°F 93% 1009 mb
Low level cloud: 4%
Mid level cloud: 44%
High level cloud: 48%
Most Significant Cloud Type: medium
56%
0.0 In
Mon 30
Dec		02:00

N
N

 2 / 3 mph 85 / 102°F 90% 1009 mb
Low level cloud: 3%
Mid level cloud: 13%
High level cloud: 66%
Most Significant Cloud Type: medium
22%
0.0 In
08:00

ENE
ENE

 2 / 5 mph 80 / 87°F 90% 1010 mb
Low level cloud: 5%
Mid level cloud: 15%
High level cloud: 30%
Most Significant Cloud Type: medium
30%
0.0 In
14:00

SSW
SSW

 3 / 6 mph 97 / 120°F 60% 1008 mb
Low level cloud: 9%
Mid level cloud: 12%
High level cloud: 0%
Most Significant Cloud Type: low
12%
0.0 In
20:00

N
N

 3 / 7 mph 93 / 126°F 85% 1009 mb
Low level cloud: 0%
Mid level cloud: 24%
High level cloud: 5%
Most Significant Cloud Type: medium
24%
0.0 In
Tue 31
Dec		02:00

NE
NE

 2 / 4 mph 85 / 101°F 88% 1009 mb
Low level cloud: 0%
Mid level cloud: 25%
High level cloud: 1%
Most Significant Cloud Type: medium
24%
0.0 In
08:00

NNE
NNE

 1 / 3 mph 83 / 94°F 88% 1010 mb
Low level cloud: 8%
Mid level cloud: 11%
High level cloud: 8%
Most Significant Cloud Type: low
12%
0.0 In
14:00

W
W

 6 / 13 mph 95 / 114°F 60% 1008 mb
Low level cloud: 10%
Mid level cloud: 8%
High level cloud: 2%
Most Significant Cloud Type: low
13%
0.0 In
20:00

NW
NW

 3 / 7 mph 88 / 108°F 88% 1009 mb
Low level cloud: 13%
Mid level cloud: 26%
High level cloud: 7%
Most Significant Cloud Type: low
22%
0.1 In
Wed 01
Jan		02:00

NNW
NNW

 2 / 5 mph 81 / 89°F 92% 1009 mb
Low level cloud: 5%
Mid level cloud: 46%
High level cloud: 20%
Most Significant Cloud Type: medium
60%
0.1 In
08:00

N
N

 2 / 4 mph 83 / 96°F 91% 1009 mb
Low level cloud: 9%
Mid level cloud: 18%
High level cloud: 10%
Most Significant Cloud Type: low
16%
0.0 In
14:00

W
W

 1 / 2 mph 96 / 121°F 67% 1008 mb
Low level cloud: 15%
Mid level cloud: 15%
High level cloud: 22%
Most Significant Cloud Type: low
22%
0.0 In
20:00

NW
NW

 2 / 4 mph 84 / 97°F 89% 1008 mb
Low level cloud: 5%
Mid level cloud: 20%
High level cloud: 62%
Most Significant Cloud Type: medium
36%
0.1 In
Thu 02
Jan		02:00

NE
NE

 2 / 4 mph 81 / 90°F 92% 1009 mb
Low level cloud: 5%
Mid level cloud: 23%
High level cloud: 12%
Most Significant Cloud Type: medium
36%
0.1 In
08:00

ESE
ESE

 1 / 2 mph 79 / 85°F 91% 1009 mb
Low level cloud: 12%
Mid level cloud: 41%
High level cloud: 9%
Most Significant Cloud Type: medium
76%
0.2 In
14:00

W
W

 4 / 8 mph 89 / 102°F 69% 1008 mb
Low level cloud: 12%
Mid level cloud: 45%
High level cloud: 10%
Most Significant Cloud Type: medium
78%
0.2 In
20:00

WNW
WNW

 2 / 4 mph 83 / 95°F 89% 1009 mb
Low level cloud: 26%
Mid level cloud: 39%
High level cloud: 36%
Most Significant Cloud Type: low
43%
0.4 In
Fri 03
Jan		02:00

NNW
NNW

 2 / 5 mph 80 / 89°F 91% 1009 mb
Low level cloud: 2%
Mid level cloud: 44%
High level cloud: 14%
Most Significant Cloud Type: medium
49%
0.2 In
08:00

ENE
ENE

 2 / 4 mph 78 / 83°F 93% 1010 mb
Low level cloud: 16%
Mid level cloud: 48%
High level cloud: 12%
Most Significant Cloud Type: medium
92%
0.3 In
14:00

WNW
WNW

 3 / 6 mph 87 / 100°F 78% 1009 mb
Low level cloud: 1%
Mid level cloud: 28%
High level cloud: 9%
Most Significant Cloud Type: medium
30%
0.1 In
20:00

ENE
ENE

 2 / 4 mph 79 / 87°F 90% 1009 mb
Low level cloud: 13%
Mid level cloud: 77%
High level cloud: 26%
Most Significant Cloud Type: medium
100%
0.4 In
Sat 04
Jan		02:00

N
N

 1 / 3 mph 81 / 89°F 89% 1009 mb
Low level cloud: 2%
Mid level cloud: 29%
High level cloud: 49%
Most Significant Cloud Type: medium
37%
0.0 In
08:00

SSW
SSW

 1 / 2 mph 78 / 85°F 93% 1010 mb
Low level cloud: 45%
Mid level cloud: 43%
High level cloud: 14%
Most Significant Cloud Type: low
61%
0.0 In
14:00

WSW
WSW

 6 / 12 mph 86 / 98°F 78% 1010 mb
Low level cloud: 49%
Mid level cloud: 49%
High level cloud: 39%
Most Significant Cloud Type: low
71%
0.2 In
20:00

SE
SE

 0 / 0 mph 82 / 94°F 95% 1010 mb
Low level cloud: 46%
Mid level cloud: 49%
High level cloud: 46%
Most Significant Cloud Type: low
68%
0.5 In
Sun 05
Jan		02:00

NNE
NNE

 4 / 9 mph 79 / 87°F 95% 1011 mb
Low level cloud: 22%
Mid level cloud: 46%
High level cloud: 100%
Most Significant Cloud Type: low
49%
0.4 In
08:00

NW
NW

 2 / 4 mph 78 / 85°F 96% 1011 mb
Low level cloud: 37%
Mid level cloud: 45%
High level cloud: 40%
Most Significant Cloud Type: low
57%
0.4 In
14:00

SW
SW

 2 / 5 mph 84 / 96°F 85% 1012 mb
Low level cloud: 17%
Mid level cloud: 49%
High level cloud: 32%
Most Significant Cloud Type: low
38%
0.2 In
20:00

NE
NE

 2 / 3 mph 83 / 96°F 93% 1010 mb
Low level cloud: 33%
Mid level cloud: 33%
High level cloud: 40%
Most Significant Cloud Type: low
49%
0.4 In
Mon 06
Jan		02:00

NE
NE

 3 / 6 mph 79 / 86°F 94% 1011 mb
Low level cloud: 17%
Mid level cloud: 38%
High level cloud: 32%
Most Significant Cloud Type: low
34%
0.2 In
08:00

E
E

 2 / 5 mph 78 / 85°F 93% 1011 mb
Low level cloud: 36%
Mid level cloud: 59%
High level cloud: 29%
Most Significant Cloud Type: low
59%
0.1 In
14:00

SW
SW

 4 / 8 mph 86 / 99°F 81% 1009 mb
Low level cloud: 41%
Mid level cloud: 43%
High level cloud: 33%
Most Significant Cloud Type: low
60%
0.3 In
20:00

ESE
ESE

 3 / 6 mph 82 / 95°F 95% 1010 mb
Low level cloud: 49%
Mid level cloud: 55%
High level cloud: 30%
Most Significant Cloud Type: low
71%
0.7 In

Other Locations Near to Petaling Jaya

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