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Pontian 14 Day Long Range Forecast

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

Malaysia

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

The forecast for Pontian in the coming two weeks is predicting the average daytime maximum temperature will be around 31°C, with a high for the two weeks of 33°C expected on the afternoon of Tuesday 31st. The average minimum temperature will be 24°C, dipping to its lowest on the morning of Friday 27th at 23°C. Expect the coming 14 days to have some days seeing a little precipitation and some days with rain. Current predictions suggest Thursday 26th will have the most precipitation with an accumulation of around 46.0mm. On the whole winds are likely to be light.

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

NE
NE

4 / 5 mph 91 / 101°F 71% 1006 mb
Low level cloud: 49%
Mid level cloud: 30%
High level cloud: 8%
Most Significant Cloud Type: low
60%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
20:00

NE
NE

7 / 13 mph 78 / 82°F 86% 1008 mb
Low level cloud: 39%
Mid level cloud: 25%
High level cloud: 11%
Most Significant Cloud Type: low
49%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
23:00

NNE
NNE

7 / 13 mph 75 / 79°F 90% 1010 mb
Low level cloud: 8%
Mid level cloud: 31%
High level cloud: 28%
Most Significant Cloud Type: medium
55%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Mon 23
Dec
02:00

NNE
NNE

6 / 12 mph 74 / 78°F 90% 1009 mb
Low level cloud: 8%
Mid level cloud: 27%
High level cloud: 14%
Most Significant Cloud Type: medium
50%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
05:00

NNE
NNE

5 / 9 mph 74 / 78°F 90% 1008 mb
Low level cloud: 13%
Mid level cloud: 28%
High level cloud: 11%
Most Significant Cloud Type: low
23%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
08:00

NE
NE

5 / 10 mph 78 / 79°F 90% 1009 mb
Low level cloud: 8%
Mid level cloud: 22%
High level cloud: 9%
Most Significant Cloud Type: medium
43%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
11:00

NNE
NNE

6 / 7 mph 87 / 92°F 74% 1010 mb
Low level cloud: 16%
Mid level cloud: 23%
High level cloud: 60%
Most Significant Cloud Type: low
31%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
14:00

W
W

4 / 4 mph 89 / 97°F 73% 1008 mb
Low level cloud: 51%
Mid level cloud: 30%
High level cloud: 17%
Most Significant Cloud Type: low
63%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
17:00

NNW
NNW

1 / 2 mph 88 / 96°F 81% 1007 mb
Low level cloud: 23%
Mid level cloud: 32%
High level cloud: 7%
Most Significant Cloud Type: low
35%
Expect 0.2 In of precipitation over the past 3 hours.
0.2 In
20:00

NE
NE

6 / 9 mph 78 / 83°F 88% 1009 mb
Low level cloud: 42%
Mid level cloud: 46%
High level cloud: 5%
Most Significant Cloud Type: low
58%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
23:00

NE
NE

6 / 10 mph 76 / 81°F 90% 1010 mb
Low level cloud: 22%
Mid level cloud: 46%
High level cloud: 6%
Most Significant Cloud Type: low
39%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Tue 24
Dec
02:00

N
N

4 / 8 mph 75 / 79°F 89% 1009 mb
Low level cloud: 49%
Mid level cloud: 44%
High level cloud: 32%
Most Significant Cloud Type: low
68%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
05:00

WNW
WNW

3 / 5 mph 74 / 78°F 96% 1008 mb
Low level cloud: 86%
Mid level cloud: 67%
High level cloud: 46%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
08:00

NE
NE

4 / 6 mph 75 / 78°F 96% 1010 mb
Low level cloud: 58%
Mid level cloud: 57%
High level cloud: 33%
Most Significant Cloud Type: low
82%
Expect 0.3 In of precipitation over the past 3 hours.
0.3 In
11:00

NNE
NNE

4 / 6 mph 78 / 80°F 92% 1011 mb
Low level cloud: 36%
Mid level cloud: 59%
High level cloud: 48%
Most Significant Cloud Type: low
62%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
14:00

NW
NW

2 / 3 mph 87 / 92°F 79% 1008 mb
Low level cloud: 13%
Mid level cloud: 23%
High level cloud: 32%
Most Significant Cloud Type: low
25%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
17:00

WSW
WSW

3 / 4 mph 87 / 93°F 80% 1007 mb
Low level cloud: 0%
Mid level cloud: 30%
High level cloud: 61%
Most Significant Cloud Type: medium
32%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
20:00

SW
SW

2 / 4 mph 79 / 84°F 84% 1009 mb
Low level cloud: 0%
Mid level cloud: 44%
High level cloud: 92%
Most Significant Cloud Type: medium
47%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
23:00

NNW
NNW

2 / 3 mph 77 / 82°F 84% 1011 mb
Low level cloud: 10%
Mid level cloud: 46%
High level cloud: 29%
Most Significant Cloud Type: medium
76%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Wed 25
Dec
02:00

NNE
NNE

4 / 6 mph 77 / 81°F 88% 1010 mb
Low level cloud: 28%
Mid level cloud: 46%
High level cloud: 34%
Most Significant Cloud Type: low
47%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
05:00

N
N

4 / 7 mph 75 / 80°F 91% 1008 mb
Low level cloud: 43%
Mid level cloud: 46%
High level cloud: 18%
Most Significant Cloud Type: low
61%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
08:00

N
N

4 / 6 mph 78 / 79°F 90% 1010 mb
Low level cloud: 31%
Mid level cloud: 28%
High level cloud: 11%
Most Significant Cloud Type: low
41%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
11:00

NW
NW

4 / 5 mph 87 / 91°F 75% 1011 mb
Low level cloud: 51%
Mid level cloud: 31%
High level cloud: 72%
Most Significant Cloud Type: low
71%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
14:00

W
W

7 / 9 mph 88 / 95°F 68% 1009 mb
Low level cloud: 1%
Mid level cloud: 27%
High level cloud: 3%
Most Significant Cloud Type: medium
28%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
17:00

WNW
WNW

5 / 6 mph 89 / 95°F 69% 1007 mb
Low level cloud: 3%
Mid level cloud: 27%
High level cloud: 6%
Most Significant Cloud Type: medium
36%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
20:00

NNE
NNE

5 / 8 mph 78 / 84°F 87% 1010 mb
Low level cloud: 8%
Mid level cloud: 45%
High level cloud: 25%
Most Significant Cloud Type: medium
67%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
23:00

NE
NE

6 / 10 mph 76 / 81°F 92% 1012 mb
Low level cloud: 23%
Mid level cloud: 78%
High level cloud: 12%
Most Significant Cloud Type: medium
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
Thu 26
Dec
02:00

NNE
NNE

6 / 10 mph 75 / 80°F 91% 1011 mb
Low level cloud: 67%
Mid level cloud: 53%
High level cloud: 29%
Most Significant Cloud Type: low
88%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
05:00

N
N

6 / 10 mph 74 / 79°F 92% 1010 mb
Low level cloud: 95%
Mid level cloud: 70%
High level cloud: 32%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
08:00

NW
NW

5 / 8 mph 75 / 80°F 96% 1011 mb
Low level cloud: 88%
Mid level cloud: 90%
High level cloud: 33%
Most Significant Cloud Type: low
100%
Expect 0.2 In of precipitation over the past 3 hours.
0.2 In
11:00

N
N

2 / 2 mph 78 / 85°F 96% 1013 mb
Low level cloud: 84%
Mid level cloud: 83%
High level cloud: 90%
Most Significant Cloud Type: low
100%
Expect 0.8 In of precipitation over the past 3 hours.
0.8 In
14:00

NNE
NNE

3 / 4 mph 81 / 89°F 94% 1012 mb
Low level cloud: 63%
Mid level cloud: 54%
High level cloud: 51%
Most Significant Cloud Type: low
88%
Expect 0.5 In of precipitation over the past 3 hours.
0.5 In
17:00

NNW
NNW

4 / 4 mph 81 / 89°F 96% 1009 mb
Low level cloud: 69%
Mid level cloud: 51%
High level cloud: 100%
Most Significant Cloud Type: low
98%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
20:00

NNW
NNW

5 / 6 mph 78 / 86°F 95% 1011 mb
Low level cloud: 57%
Mid level cloud: 57%
High level cloud: 72%
Most Significant Cloud Type: low
85%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
23:00

NNW
NNW

2 / 3 mph 77 / 83°F 94% 1013 mb
Low level cloud: 37%
Mid level cloud: 46%
High level cloud: 46%
Most Significant Cloud Type: low
59%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Fri 27
Dec
02:00

N
N

4 / 6 mph 75 / 79°F 93% 1011 mb
Low level cloud: 30%
Mid level cloud: 48%
High level cloud: 32%
Most Significant Cloud Type: low
50%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
05:00

N
N

4 / 6 mph 73 / 78°F 92% 1010 mb
Low level cloud: 18%
Mid level cloud: 44%
High level cloud: 32%
Most Significant Cloud Type: low
37%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
08:00

NNE
NNE

4 / 7 mph 75 / 78°F 90% 1012 mb
Low level cloud: 11%
Mid level cloud: 51%
High level cloud: 49%
Most Significant Cloud Type: medium
82%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
11:00

NNE
NNE

4 / 4 mph 86 / 89°F 77% 1013 mb
Low level cloud: 9%
Mid level cloud: 44%
High level cloud: 16%
Most Significant Cloud Type: medium
68%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
14:00

W
W

1 / 2 mph 88 / 94°F 78% 1011 mb
Low level cloud: 51%
Mid level cloud: 32%
High level cloud: 33%
Most Significant Cloud Type: low
65%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
17:00

NNE
NNE

3 / 5 mph 85 / 91°F 88% 1009 mb
Low level cloud: 36%
Mid level cloud: 46%
High level cloud: 30%
Most Significant Cloud Type: low
55%
Expect 0.2 In of precipitation over the past 3 hours.
0.2 In
20:00

NE
NE

5 / 8 mph 78 / 83°F 91% 1011 mb
Low level cloud: 18%
Mid level cloud: 35%
High level cloud: 48%
Most Significant Cloud Type: low
36%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
23:00

NE
NE

4 / 7 mph 76 / 81°F 92% 1012 mb
Low level cloud: 19%
Mid level cloud: 25%
High level cloud: 81%
Most Significant Cloud Type: low
38%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sat 28
Dec
02:00

NE
NE

5 / 8 mph 75 / 80°F 92% 1011 mb
Low level cloud: 20%
Mid level cloud: 32%
High level cloud: 69%
Most Significant Cloud Type: low
39%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
05:00

NNE
NNE

4 / 7 mph 74 / 78°F 92% 1009 mb
Low level cloud: 21%
Mid level cloud: 22%
High level cloud: 43%
Most Significant Cloud Type: low
34%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
08:00

NNE
NNE

3 / 5 mph 78 / 79°F 91% 1011 mb
Low level cloud: 20%
Mid level cloud: 24%
High level cloud: 21%
Most Significant Cloud Type: low
30%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
11:00

N
N

4 / 5 mph 87 / 93°F 76% 1012 mb
Low level cloud: 7%
Mid level cloud: 21%
High level cloud: 32%
Most Significant Cloud Type: low
18%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
14:00

W
W

5 / 6 mph 91 / 100°F 69% 1009 mb
Low level cloud: 42%
Mid level cloud: 23%
High level cloud: 22%
Most Significant Cloud Type: low
53%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
17:00

W
W

5 / 6 mph 89 / 98°F 77% 1007 mb
Low level cloud: 33%
Mid level cloud: 18%
High level cloud: 32%
Most Significant Cloud Type: low
43%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
20:00

NW
NW

1 / 2 mph 80 / 87°F 85% 1009 mb
Low level cloud: 2%
Mid level cloud: 18%
High level cloud: 32%
Most Significant Cloud Type: medium
25%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
23:00

NE
NE

4 / 6 mph 78 / 83°F 90% 1011 mb
Low level cloud: 4%
Mid level cloud: 26%
High level cloud: 22%
Most Significant Cloud Type: medium
38%
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

5 / 11 mph 82 / 93°F 89% 1010 mb
Low level cloud: 1%
Mid level cloud: 29%
High level cloud: 61%
Most Significant Cloud Type: medium
34%
0.0 In
08:00

NNE
NNE

4 / 8 mph 78 / 83°F 89% 1010 mb
Low level cloud: 7%
Mid level cloud: 32%
High level cloud: 17%
Most Significant Cloud Type: medium
52%
0.0 In
14:00

W
W

7 / 16 mph 89 / 103°F 69% 1009 mb
Low level cloud: 4%
Mid level cloud: 23%
High level cloud: 16%
Most Significant Cloud Type: medium
33%
0.0 In
20:00

NW
NW

7 / 14 mph 87 / 103°F 85% 1008 mb
Low level cloud: 1%
Mid level cloud: 27%
High level cloud: 40%
Most Significant Cloud Type: medium
31%
0.0 In
Mon 30
Dec
02:00

NE
NE

4 / 8 mph 80 / 88°F 88% 1009 mb
Low level cloud: 4%
Mid level cloud: 18%
High level cloud: 32%
Most Significant Cloud Type: medium
28%
0.0 In
08:00

NNE
NNE

5 / 11 mph 80 / 87°F 90% 1010 mb
Low level cloud: 16%
Mid level cloud: 12%
High level cloud: 29%
Most Significant Cloud Type: low
24%
0.0 In
14:00

W
W

6 / 13 mph 94 / 113°F 66% 1008 mb
Low level cloud: 5%
Mid level cloud: 9%
High level cloud: 11%
Most Significant Cloud Type: low
9%
0.0 In
20:00

NNE
NNE

6 / 12 mph 89 / 108°F 82% 1008 mb
Low level cloud: 0%
Mid level cloud: 36%
High level cloud: 22%
Most Significant Cloud Type: medium
36%
0.0 In
Tue 31
Dec
02:00

NNE
NNE

6 / 12 mph 79 / 86°F 90% 1009 mb
Low level cloud: 4%
Mid level cloud: 16%
High level cloud: 7%
Most Significant Cloud Type: medium
26%
0.0 In
08:00

NNW
NNW

4 / 9 mph 78 / 84°F 88% 1010 mb
Low level cloud: 7%
Mid level cloud: 24%
High level cloud: 32%
Most Significant Cloud Type: medium
45%
0.0 In
14:00

W
W

9 / 18 mph 94 / 113°F 65% 1008 mb
Low level cloud: 0%
Mid level cloud: 12%
High level cloud: 30%
Most Significant Cloud Type: medium
13%
0.0 In
20:00

NNW
NNW

6 / 13 mph 85 / 96°F 80% 1008 mb
Low level cloud: 0%
Mid level cloud: 19%
High level cloud: 18%
Most Significant Cloud Type: medium
19%
0.0 In
Wed 01
Jan
02:00

NNE
NNE

5 / 10 mph 79 / 86°F 89% 1009 mb
Low level cloud: 5%
Mid level cloud: 45%
High level cloud: 32%
Most Significant Cloud Type: medium
61%
0.0 In
08:00

N
N

4 / 8 mph 81 / 89°F 88% 1009 mb
Low level cloud: 11%
Mid level cloud: 27%
High level cloud: 8%
Most Significant Cloud Type: low
21%
0.0 In
14:00

W
W

6 / 13 mph 91 / 109°F 70% 1008 mb
Low level cloud: 33%
Mid level cloud: 12%
High level cloud: 12%
Most Significant Cloud Type: low
38%
0.0 In
20:00

N
N

5 / 11 mph 84 / 96°F 88% 1008 mb
Low level cloud: 11%
Mid level cloud: 21%
High level cloud: 18%
Most Significant Cloud Type: low
20%
0.2 In
Thu 02
Jan
02:00

NNE
NNE

7 / 15 mph 77 / 83°F 91% 1008 mb
Low level cloud: 5%
Mid level cloud: 25%
High level cloud: 32%
Most Significant Cloud Type: medium
40%
0.2 In
08:00

N
N

6 / 12 mph 82 / 94°F 91% 1009 mb
Low level cloud: 14%
Mid level cloud: 22%
High level cloud: 10%
Most Significant Cloud Type: low
22%
0.0 In
14:00

W
W

7 / 15 mph 92 / 108°F 65% 1007 mb
Low level cloud: 15%
Mid level cloud: 18%
High level cloud: 49%
Most Significant Cloud Type: low
27%
0.0 In
20:00

NNE
NNE

5 / 10 mph 86 / 103°F 86% 1008 mb
Low level cloud: 0%
Mid level cloud: 28%
High level cloud: 32%
Most Significant Cloud Type: medium
28%
0.3 In
Fri 03
Jan
02:00

N
N

4 / 8 mph 83 / 95°F 88% 1008 mb
Low level cloud: 4%
Mid level cloud: 56%
High level cloud: 13%
Most Significant Cloud Type: medium
68%
0.1 In
08:00

N
N

4 / 9 mph 83 / 94°F 88% 1009 mb
Low level cloud: 10%
Mid level cloud: 26%
High level cloud: 31%
Most Significant Cloud Type: low
23%
0.0 In
14:00

NW
NW

6 / 13 mph 89 / 104°F 73% 1008 mb
Low level cloud: 10%
Mid level cloud: 32%
High level cloud: 11%
Most Significant Cloud Type: medium
60%
0.2 In
20:00

N
N

11 / 22 mph 82 / 93°F 91% 1009 mb
Low level cloud: 20%
Mid level cloud: 81%
High level cloud: 18%
Most Significant Cloud Type: medium
100%
0.4 In
Sat 04
Jan
02:00

N
N

3 / 5 mph 85 / 100°F 89% 1009 mb
Low level cloud: 12%
Mid level cloud: 34%
High level cloud: 19%
Most Significant Cloud Type: low
25%
0.0 In
08:00

NNW
NNW

8 / 16 mph 78 / 84°F 89% 1010 mb
Low level cloud: 7%
Mid level cloud: 46%
High level cloud: 33%
Most Significant Cloud Type: medium
65%
0.0 In
14:00

W
W

6 / 14 mph 88 / 100°F 68% 1009 mb
Low level cloud: 11%
Mid level cloud: 44%
High level cloud: 16%
Most Significant Cloud Type: medium
74%
0.1 In
20:00

NNW
NNW

7 / 14 mph 83 / 94°F 89% 1009 mb
Low level cloud: 10%
Mid level cloud: 46%
High level cloud: 100%
Most Significant Cloud Type: medium
77%
0.1 In
Sun 05
Jan
02:00

NNE
NNE

6 / 12 mph 81 / 90°F 89% 1010 mb
Low level cloud: 12%
Mid level cloud: 48%
High level cloud: 6%
Most Significant Cloud Type: medium
81%
0.0 In
08:00

N
N

6 / 13 mph 79 / 86°F 92% 1010 mb
Low level cloud: 17%
Mid level cloud: 46%
High level cloud: 43%
Most Significant Cloud Type: low
38%
0.2 In
14:00

NW
NW

8 / 17 mph 87 / 99°F 72% 1010 mb
Low level cloud: 29%
Mid level cloud: 47%
High level cloud: 9%
Most Significant Cloud Type: low
46%
0.0 In
20:00

NNW
NNW

4 / 7 mph 85 / 100°F 86% 1010 mb
Low level cloud: 22%
Mid level cloud: 45%
High level cloud: 37%
Most Significant Cloud Type: low
42%
0.2 In
Mon 06
Jan
02:00

NNE
NNE

5 / 11 mph 77 / 82°F 91% 1011 mb
Low level cloud: 15%
Mid level cloud: 33%
High level cloud: 16%
Most Significant Cloud Type: low
28%
0.0 In
08:00

NNE
NNE

2 / 5 mph 79 / 85°F 87% 1011 mb
Low level cloud: 92%
Mid level cloud: 77%
High level cloud: 33%
Most Significant Cloud Type: low
100%
0.2 In
14:00

NNE
NNE

7 / 15 mph 90 / 103°F 66% 1009 mb
Low level cloud: 51%
Mid level cloud: 42%
High level cloud: 17%
Most Significant Cloud Type: low
67%
0.1 In
20:00

NE
NE

6 / 12 mph 83 / 96°F 95% 1010 mb
Low level cloud: 38%
Mid level cloud: 59%
High level cloud: 95%
Most Significant Cloud Type: low
69%
0.5 In

Other Locations Near to Pontian

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