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Klang 14 Day Long Range Forecast

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

Malaysia

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

The forecast for Klang in the coming two weeks is predicting the average daytime maximum temperature will be around 30°C, with a high for the two weeks of 31°C expected on the afternoon of Monday 30th. The average minimum temperature will be 24°C, dipping to its lowest on the morning of Friday 27th at 23°C. The coming 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 43.0mm. 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

3 / 4 mph 87 / 94°F 82% 1006 mb
Low level cloud: 4%
Mid level cloud: 20%
High level cloud: 14%
Most Significant Cloud Type: medium
32%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
20:00

S
S

1 / 2 mph 83 / 94°F 88% 1008 mb
Low level cloud: 4%
Mid level cloud: 20%
High level cloud: 14%
Most Significant Cloud Type: medium
31%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
23:00

SSE
SSE

1 / 2 mph 81 / 89°F 91% 1010 mb
Low level cloud: 8%
Mid level cloud: 28%
High level cloud: 20%
Most Significant Cloud Type: medium
50%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
Mon 23
Dec
02:00

ESE
ESE

2 / 4 mph 79 / 85°F 92% 1009 mb
Low level cloud: 15%
Mid level cloud: 25%
High level cloud: 32%
Most Significant Cloud Type: low
27%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
05:00

E
E

2 / 3 mph 77 / 83°F 92% 1008 mb
Low level cloud: 12%
Mid level cloud: 25%
High level cloud: 42%
Most Significant Cloud Type: low
26%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
08:00

ESE
ESE

2 / 4 mph 81 / 83°F 91% 1009 mb
Low level cloud: 9%
Mid level cloud: 20%
High level cloud: 95%
Most Significant Cloud Type: medium
48%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
11:00

ESE
ESE

3 / 3 mph 84 / 89°F 84% 1010 mb
Low level cloud: 7%
Mid level cloud: 21%
High level cloud: 8%
Most Significant Cloud Type: medium
40%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
14:00

SW
SW

5 / 8 mph 87 / 93°F 77% 1008 mb
Low level cloud: 16%
Mid level cloud: 26%
High level cloud: 1%
Most Significant Cloud Type: low
25%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
17:00

SSW
SSW

5 / 7 mph 87 / 92°F 75% 1007 mb
Low level cloud: 35%
Mid level cloud: 31%
High level cloud: 4%
Most Significant Cloud Type: low
46%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
20:00

SSE
SSE

3 / 4 mph 83 / 93°F 88% 1008 mb
Low level cloud: 0%
Mid level cloud: 50%
High level cloud: 12%
Most Significant Cloud Type: medium
50%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
23:00

SSE
SSE

4 / 5 mph 81 / 89°F 89% 1010 mb
Low level cloud: 5%
Mid level cloud: 43%
High level cloud: 17%
Most Significant Cloud Type: medium
56%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Tue 24
Dec
02:00

SSE
SSE

6 / 10 mph 76 / 81°F 94% 1009 mb
Low level cloud: 65%
Mid level cloud: 74%
High level cloud: 91%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
05:00

SE
SE

6 / 9 mph 75 / 80°F 94% 1008 mb
Low level cloud: 26%
Mid level cloud: 47%
High level cloud: 15%
Most Significant Cloud Type: low
44%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
08:00

E
E

6 / 9 mph 78 / 79°F 94% 1009 mb
Low level cloud: 29%
Mid level cloud: 53%
High level cloud: 14%
Most Significant Cloud Type: low
49%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
11:00

SE
SE

6 / 8 mph 79 / 82°F 89% 1011 mb
Low level cloud: 67%
Mid level cloud: 46%
High level cloud: 33%
Most Significant Cloud Type: low
86%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
14:00

S
S

6 / 8 mph 84 / 89°F 75% 1008 mb
Low level cloud: 57%
Mid level cloud: 46%
High level cloud: 31%
Most Significant Cloud Type: low
77%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
17:00

SSW
SSW

7 / 9 mph 85 / 89°F 76% 1007 mb
Low level cloud: 50%
Mid level cloud: 26%
High level cloud: 32%
Most Significant Cloud Type: low
63%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
20:00

SSE
SSE

4 / 5 mph 79 / 85°F 86% 1009 mb
Low level cloud: 29%
Mid level cloud: 29%
High level cloud: 68%
Most Significant Cloud Type: low
47%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
23:00

SE
SE

3 / 4 mph 77 / 82°F 88% 1011 mb
Low level cloud: 24%
Mid level cloud: 49%
High level cloud: 15%
Most Significant Cloud Type: low
42%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Wed 25
Dec
02:00

E
E

1 / 2 mph 76 / 81°F 90% 1010 mb
Low level cloud: 36%
Mid level cloud: 51%
High level cloud: 21%
Most Significant Cloud Type: low
56%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
05:00

NW
NW

1 / 1 mph 76 / 80°F 91% 1008 mb
Low level cloud: 59%
Mid level cloud: 89%
High level cloud: 80%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
08:00

N
N

2 / 3 mph 80 / 81°F 90% 1010 mb
Low level cloud: 42%
Mid level cloud: 43%
High level cloud: 12%
Most Significant Cloud Type: low
58%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
11:00

WNW
WNW

3 / 4 mph 84 / 86°F 79% 1011 mb
Low level cloud: 40%
Mid level cloud: 44%
High level cloud: 21%
Most Significant Cloud Type: low
58%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
14:00

W
W

9 / 13 mph 84 / 90°F 78% 1009 mb
Low level cloud: 64%
Mid level cloud: 44%
High level cloud: 8%
Most Significant Cloud Type: low
80%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
17:00

W
W

9 / 14 mph 84 / 92°F 85% 1008 mb
Low level cloud: 61%
Mid level cloud: 48%
High level cloud: 15%
Most Significant Cloud Type: low
79%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
20:00

SSE
SSE

2 / 3 mph 81 / 91°F 92% 1009 mb
Low level cloud: 56%
Mid level cloud: 43%
High level cloud: 90%
Most Significant Cloud Type: low
81%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
23:00

SE
SE

4 / 7 mph 79 / 87°F 95% 1011 mb
Low level cloud: 40%
Mid level cloud: 60%
High level cloud: 75%
Most Significant Cloud Type: low
70%
Expect 0.3 In of precipitation over the past 3 hours.
0.3 In
Thu 26
Dec
02:00

SE
SE

4 / 8 mph 76 / 81°F 96% 1010 mb
Low level cloud: 73%
Mid level cloud: 52%
High level cloud: 45%
Most Significant Cloud Type: low
95%
Expect 0.3 In of precipitation over the past 3 hours.
0.3 In
05:00

E
E

3 / 5 mph 75 / 80°F 97% 1009 mb
Low level cloud: 92%
Mid level cloud: 61%
High level cloud: 32%
Most Significant Cloud Type: low
100%
Expect 0.3 In of precipitation over the past 3 hours.
0.3 In
08:00

NE
NE

2 / 3 mph 75 / 80°F 98% 1011 mb
Low level cloud: 98%
Mid level cloud: 80%
High level cloud: 56%
Most Significant Cloud Type: low
100%
Expect 0.5 In of precipitation over the past 3 hours.
0.5 In
11:00

ESE
ESE

0 / 0 mph 77 / 82°F 95% 1013 mb
Low level cloud: 78%
Mid level cloud: 52%
High level cloud: 26%
Most Significant Cloud Type: low
98%
Expect 0.3 In of precipitation over the past 3 hours.
0.3 In
14:00

W
W

4 / 5 mph 79 / 83°F 95% 1012 mb
Low level cloud: 68%
Mid level cloud: 46%
High level cloud: 33%
Most Significant Cloud Type: low
87%
Expect 0.2 In of precipitation over the past 3 hours.
0.2 In
17:00

NE
NE

1 / 2 mph 79 / 83°F 94% 1009 mb
Low level cloud: 57%
Mid level cloud: 45%
High level cloud: 33%
Most Significant Cloud Type: low
76%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
20:00

SE
SE

2 / 2 mph 77 / 83°F 95% 1011 mb
Low level cloud: 48%
Mid level cloud: 50%
High level cloud: 74%
Most Significant Cloud Type: low
74%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
23:00

ESE
ESE

2 / 3 mph 76 / 81°F 95% 1013 mb
Low level cloud: 46%
Mid level cloud: 44%
High level cloud: 36%
Most Significant Cloud Type: low
65%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Fri 27
Dec
02:00

ESE
ESE

2 / 4 mph 75 / 80°F 94% 1011 mb
Low level cloud: 37%
Mid level cloud: 46%
High level cloud: 32%
Most Significant Cloud Type: low
56%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
05:00

E
E

3 / 4 mph 74 / 79°F 94% 1010 mb
Low level cloud: 49%
Mid level cloud: 45%
High level cloud: 15%
Most Significant Cloud Type: low
66%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
08:00

E
E

4 / 6 mph 78 / 79°F 94% 1011 mb
Low level cloud: 30%
Mid level cloud: 46%
High level cloud: 20%
Most Significant Cloud Type: low
48%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
11:00

SE
SE

3 / 4 mph 84 / 87°F 81% 1013 mb
Low level cloud: 44%
Mid level cloud: 32%
High level cloud: 21%
Most Significant Cloud Type: low
57%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
14:00

SSW
SSW

3 / 4 mph 86 / 92°F 77% 1011 mb
Low level cloud: 43%
Mid level cloud: 46%
High level cloud: 32%
Most Significant Cloud Type: low
63%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
17:00

W
W

0 / 1 mph 84 / 88°F 88% 1009 mb
Low level cloud: 20%
Mid level cloud: 43%
High level cloud: 75%
Most Significant Cloud Type: low
43%
Expect 0.2 In of precipitation over the past 3 hours.
0.2 In
20:00

NNE
NNE

2 / 4 mph 78 / 84°F 95% 1010 mb
Low level cloud: 29%
Mid level cloud: 44%
High level cloud: 84%
Most Significant Cloud Type: low
54%
Expect 0.2 In of precipitation over the past 3 hours.
0.2 In
23:00

NE
NE

3 / 6 mph 76 / 81°F 93% 1012 mb
Low level cloud: 8%
Mid level cloud: 54%
High level cloud: 79%
Most Significant Cloud Type: medium
79%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sat 28
Dec
02:00

NE
NE

3 / 5 mph 77 / 82°F 90% 1011 mb
Low level cloud: 0%
Mid level cloud: 44%
High level cloud: 62%
Most Significant Cloud Type: medium
47%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
05:00

E
E

1 / 2 mph 77 / 82°F 91% 1009 mb
Low level cloud: 5%
Mid level cloud: 44%
High level cloud: 20%
Most Significant Cloud Type: medium
57%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
08:00

E
E

1 / 2 mph 81 / 83°F 90% 1011 mb
Low level cloud: 7%
Mid level cloud: 41%
High level cloud: 17%
Most Significant Cloud Type: medium
60%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
11:00

E
E

1 / 2 mph 85 / 88°F 81% 1012 mb
Low level cloud: 9%
Mid level cloud: 39%
High level cloud: 21%
Most Significant Cloud Type: medium
65%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
14:00

SW
SW

2 / 3 mph 87 / 92°F 75% 1010 mb
Low level cloud: 1%
Mid level cloud: 46%
High level cloud: 20%
Most Significant Cloud Type: medium
48%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
17:00

W
W

3 / 4 mph 87 / 92°F 74% 1008 mb
Low level cloud: 21%
Mid level cloud: 32%
High level cloud: 17%
Most Significant Cloud Type: low
33%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
20:00

NW
NW

3 / 4 mph 83 / 92°F 85% 1009 mb
Low level cloud: 0%
Mid level cloud: 46%
High level cloud: 20%
Most Significant Cloud Type: medium
47%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
23:00

N
N

3 / 4 mph 81 / 88°F 87% 1011 mb
Low level cloud: 1%
Mid level cloud: 44%
High level cloud: 33%
Most Significant Cloud Type: medium
48%
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

NNW
NNW

4 / 9 mph 82 / 93°F 90% 1010 mb
Low level cloud: 3%
Mid level cloud: 32%
High level cloud: 32%
Most Significant Cloud Type: medium
40%
0.0 In
08:00

ENE
ENE

2 / 5 mph 79 / 85°F 88% 1010 mb
Low level cloud: 10%
Mid level cloud: 32%
High level cloud: 9%
Most Significant Cloud Type: medium
59%
0.0 In
14:00

WNW
WNW

6 / 12 mph 89 / 101°F 67% 1010 mb
Low level cloud: 0%
Mid level cloud: 35%
High level cloud: 11%
Most Significant Cloud Type: medium
34%
0.0 In
20:00

NNW
NNW

4 / 9 mph 83 / 95°F 91% 1009 mb
Low level cloud: 3%
Mid level cloud: 43%
High level cloud: 78%
Most Significant Cloud Type: medium
55%
0.0 In
Mon 30
Dec
02:00

NNW
NNW

4 / 8 mph 85 / 100°F 89% 1009 mb
Low level cloud: 3%
Mid level cloud: 14%
High level cloud: 54%
Most Significant Cloud Type: medium
24%
0.0 In
08:00

E
E

2 / 5 mph 80 / 88°F 89% 1010 mb
Low level cloud: 4%
Mid level cloud: 15%
High level cloud: 15%
Most Significant Cloud Type: medium
27%
0.0 In
14:00

SSW
SSW

2 / 5 mph 98 / 127°F 64% 1008 mb
Low level cloud: 16%
Mid level cloud: 10%
High level cloud: 0%
Most Significant Cloud Type: low
19%
0.0 In
20:00

N
N

5 / 11 mph 93 / 126°F 85% 1008 mb
Low level cloud: 0%
Mid level cloud: 21%
High level cloud: 7%
Most Significant Cloud Type: medium
21%
0.0 In
Tue 31
Dec
02:00

NNW
NNW

2 / 5 mph 90 / 115°F 87% 1009 mb
Low level cloud: 0%
Mid level cloud: 21%
High level cloud: 1%
Most Significant Cloud Type: medium
21%
0.0 In
08:00

N
N

3 / 6 mph 82 / 91°F 89% 1010 mb
Low level cloud: 10%
Mid level cloud: 12%
High level cloud: 6%
Most Significant Cloud Type: low
14%
0.0 In
14:00

WNW
WNW

8 / 16 mph 93 / 113°F 68% 1008 mb
Low level cloud: 31%
Mid level cloud: 9%
High level cloud: 2%
Most Significant Cloud Type: low
34%
0.0 In
20:00

NW
NW

5 / 11 mph 82 / 91°F 86% 1009 mb
Low level cloud: 8%
Mid level cloud: 24%
High level cloud: 7%
Most Significant Cloud Type: medium
46%
0.0 In
Wed 01
Jan
02:00

NNW
NNW

5 / 10 mph 83 / 96°F 90% 1009 mb
Low level cloud: 5%
Mid level cloud: 47%
High level cloud: 30%
Most Significant Cloud Type: medium
61%
0.1 In
08:00

NNW
NNW

4 / 9 mph 82 / 94°F 91% 1009 mb
Low level cloud: 13%
Mid level cloud: 17%
High level cloud: 10%
Most Significant Cloud Type: low
19%
0.1 In
14:00

NW
NW

3 / 6 mph 94 / 118°F 72% 1008 mb
Low level cloud: 23%
Mid level cloud: 13%
High level cloud: 13%
Most Significant Cloud Type: low
28%
0.0 In
20:00

NW
NW

4 / 8 mph 89 / 112°F 88% 1008 mb
Low level cloud: 13%
Mid level cloud: 20%
High level cloud: 33%
Most Significant Cloud Type: low
24%
0.0 In
Thu 02
Jan
02:00

NNE
NNE

2 / 5 mph 82 / 93°F 90% 1009 mb
Low level cloud: 2%
Mid level cloud: 23%
High level cloud: 14%
Most Significant Cloud Type: medium
29%
0.1 In
08:00

S
S

1 / 2 mph 79 / 86°F 90% 1009 mb
Low level cloud: 6%
Mid level cloud: 44%
High level cloud: 8%
Most Significant Cloud Type: medium
60%
0.3 In
14:00

W
W

6 / 12 mph 92 / 108°F 64% 1008 mb
Low level cloud: 7%
Mid level cloud: 46%
High level cloud: 8%
Most Significant Cloud Type: medium
64%
0.1 In
20:00

NW
NW

4 / 9 mph 83 / 94°F 85% 1008 mb
Low level cloud: 4%
Mid level cloud: 31%
High level cloud: 49%
Most Significant Cloud Type: medium
43%
0.1 In
Fri 03
Jan
02:00

NNW
NNW

5 / 10 mph 82 / 92°F 91% 1008 mb
Low level cloud: 6%
Mid level cloud: 45%
High level cloud: 15%
Most Significant Cloud Type: medium
61%
0.1 In
08:00

NNW
NNW

2 / 4 mph 80 / 87°F 89% 1009 mb
Low level cloud: 5%
Mid level cloud: 45%
High level cloud: 13%
Most Significant Cloud Type: medium
60%
0.3 In
14:00

NW
NW

4 / 9 mph 87 / 100°F 80% 1008 mb
Low level cloud: 4%
Mid level cloud: 36%
High level cloud: 8%
Most Significant Cloud Type: medium
47%
0.1 In
20:00

NE
NE

2 / 5 mph 81 / 88°F 87% 1009 mb
Low level cloud: 9%
Mid level cloud: 78%
High level cloud: 27%
Most Significant Cloud Type: medium
100%
0.5 In
Sat 04
Jan
02:00

NNW
NNW

4 / 7 mph 83 / 95°F 90% 1009 mb
Low level cloud: 5%
Mid level cloud: 28%
High level cloud: 85%
Most Significant Cloud Type: medium
45%
0.0 In
08:00

SW
SW

3 / 6 mph 80 / 87°F 93% 1010 mb
Low level cloud: 48%
Mid level cloud: 43%
High level cloud: 21%
Most Significant Cloud Type: low
65%
0.2 In
14:00

WSW
WSW

8 / 16 mph 86 / 101°F 82% 1010 mb
Low level cloud: 37%
Mid level cloud: 63%
High level cloud: 63%
Most Significant Cloud Type: low
66%
0.4 In
20:00

NNE
NNE

1 / 3 mph 84 / 100°F 92% 1010 mb
Low level cloud: 28%
Mid level cloud: 47%
High level cloud: 54%
Most Significant Cloud Type: low
51%
0.5 In
Sun 05
Jan
02:00

NNE
NNE

6 / 13 mph 79 / 85°F 92% 1011 mb
Low level cloud: 12%
Mid level cloud: 46%
High level cloud: 80%
Most Significant Cloud Type: medium
83%
0.2 In
08:00

NW
NW

2 / 5 mph 79 / 87°F 93% 1011 mb
Low level cloud: 36%
Mid level cloud: 43%
High level cloud: 69%
Most Significant Cloud Type: low
58%
0.2 In
14:00

SW
SW

1 / 3 mph 84 / 99°F 91% 1011 mb
Low level cloud: 32%
Mid level cloud: 48%
High level cloud: 32%
Most Significant Cloud Type: low
52%
0.1 In
20:00

N
N

2 / 5 mph 84 / 97°F 89% 1009 mb
Low level cloud: 54%
Mid level cloud: 29%
High level cloud: 32%
Most Significant Cloud Type: low
68%
0.3 In
Mon 06
Jan
02:00

N
N

4 / 9 mph 81 / 92°F 94% 1010 mb
Low level cloud: 25%
Mid level cloud: 32%
High level cloud: 32%
Most Significant Cloud Type: low
39%
0.2 In
08:00

ESE
ESE

3 / 6 mph 80 / 87°F 91% 1010 mb
Low level cloud: 43%
Mid level cloud: 66%
High level cloud: 33%
Most Significant Cloud Type: low
69%
0.2 In
14:00

WSW
WSW

5 / 11 mph 86 / 101°F 86% 1009 mb
Low level cloud: 29%
Mid level cloud: 46%
High level cloud: 28%
Most Significant Cloud Type: low
48%
0.4 In
20:00

ESE
ESE

5 / 11 mph 84 / 98°F 93% 1010 mb
Low level cloud: 43%
Mid level cloud: 54%
High level cloud: 16%
Most Significant Cloud Type: low
63%
0.6 In

Other Locations Near to Klang

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