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Chapadinha 14 Day Long Range Forecast

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

Brazil

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

Taking a look at Chapadinha over the coming two weeks and the average daytime maximum temperature will be around 32°C, with a high for the two weeks of 34°C expected on the afternoon of Friday 3rd. The average minimum temperature will be 23°C, dipping to its lowest on the morning of Wednesday 1st at 21°C. Expect the following 14 days ahead to have some days seeing a little precipitation and some days with rain. Predictions are Tuesday 30th will have the most precipitation with an accumulation of around 13.0mm. On the whole winds are likely to be light.

DayLocal TimeDirSpeed/
Gust
Temp/
Feels Like
HumidityPressureCloud AmountPrecip AmountWeather
Mon 29
Apr
15:00

ESE
ESE

3 / 4 mph 91 / 99°F 58% 1008 mb
Low level cloud: 9%
Mid level cloud: 60%
High level cloud: 5%
Most Significant Cloud Type: medium
86%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

E
E

1 / 2 mph 79 / 85°F 93% 1010 mb
Low level cloud: 26%
Mid level cloud: 46%
High level cloud: 9%
Most Significant Cloud Type: low
43%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
21:00

N
N

3 / 5 mph 76 / 81°F 97% 1011 mb
Low level cloud: 0%
Mid level cloud: 23%
High level cloud: 10%
Most Significant Cloud Type: medium
23%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
Tue 30
Apr
00:00

N
N

3 / 5 mph 74 / 79°F 99% 1011 mb
Low level cloud: 17%
Mid level cloud: 22%
High level cloud: 21%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

NNE
NNE

2 / 4 mph 74 / 79°F 99% 1010 mb
Low level cloud: 31%
Mid level cloud: 45%
High level cloud: 4%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

NNE
NNE

2 / 4 mph 77 / 78°F 99% 1010 mb
Low level cloud: 38%
Mid level cloud: 22%
High level cloud: 6%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

ENE
ENE

4 / 5 mph 82 / 87°F 91% 1013 mb
Low level cloud: 19%
Mid level cloud: 32%
High level cloud: 9%
Most Significant Cloud Type: low
31%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
12:00

ESE
ESE

4 / 8 mph 85 / 91°F 88% 1012 mb
Low level cloud: 51%
Mid level cloud: 33%
High level cloud: 22%
Most Significant Cloud Type: low
65%
Expect 0.2 In of precipitation over the past 3 hours.
0.2 In
15:00

E
E

4 / 8 mph 81 / 88°F 95% 1010 mb
Low level cloud: 14%
Mid level cloud: 45%
High level cloud: 100%
Most Significant Cloud Type: medium
88%
Expect 0.2 In of precipitation over the past 3 hours.
0.2 In
18:00

ENE
ENE

3 / 5 mph 76 / 82°F 98% 1011 mb
Low level cloud: 16%
Mid level cloud: 46%
High level cloud: 100%
Most Significant Cloud Type: medium
94%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
21:00

NNE
NNE

3 / 5 mph 75 / 80°F 99% 1013 mb
Low level cloud: 17%
Mid level cloud: 6%
High level cloud: 52%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Wed 01
May
00:00

NNE
NNE

2 / 4 mph 73 / 77°F 98% 1012 mb
Low level cloud: 7%
Mid level cloud: 0%
High level cloud: 78%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

ENE
ENE

3 / 5 mph 71 / 71°F 99% 1010 mb
Low level cloud: 27%
Mid level cloud: 0%
High level cloud: 32%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

ESE
ESE

2 / 5 mph 73 / 76°F 98% 1011 mb
Low level cloud: 15%
Mid level cloud: 12%
High level cloud: 22%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

SE
SE

4 / 4 mph 84 / 86°F 71% 1012 mb
Low level cloud: 8%
Mid level cloud: 21%
High level cloud: 13%
Most Significant Cloud Type: low
16%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

ESE
ESE

5 / 6 mph 92 / 95°F 51% 1010 mb
Low level cloud: 29%
Mid level cloud: 14%
High level cloud: 19%
Most Significant Cloud Type: low
35%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

ESE
ESE

5 / 8 mph 87 / 91°F 70% 1007 mb
Low level cloud: 29%
Mid level cloud: 56%
High level cloud: 6%
Most Significant Cloud Type: low
49%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

ESE
ESE

4 / 8 mph 77 / 82°F 94% 1009 mb
Low level cloud: 15%
Mid level cloud: 45%
High level cloud: 12%
Most Significant Cloud Type: medium
87%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

E
E

3 / 6 mph 75 / 80°F 96% 1011 mb
Low level cloud: 20%
Mid level cloud: 45%
High level cloud: 31%
Most Significant Cloud Type: low
39%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Thu 02
May
00:00

NE
NE

3 / 6 mph 75 / 79°F 97% 1010 mb
Low level cloud: 5%
Mid level cloud: 70%
High level cloud: 95%
Most Significant Cloud Type: medium
88%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

NE
NE

3 / 6 mph 74 / 78°F 97% 1008 mb
Low level cloud: 12%
Mid level cloud: 63%
High level cloud: 32%
Most Significant Cloud Type: medium
99%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

ENE
ENE

2 / 4 mph 77 / 78°F 97% 1009 mb
Low level cloud: 26%
Mid level cloud: 45%
High level cloud: 17%
Most Significant Cloud Type: low
44%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

ENE
ENE

3 / 4 mph 80 / 82°F 87% 1011 mb
Low level cloud: 18%
Mid level cloud: 32%
High level cloud: 6%
Most Significant Cloud Type: low
30%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

E
E

5 / 6 mph 90 / 94°F 58% 1010 mb
Low level cloud: 4%
Mid level cloud: 24%
High level cloud: 5%
Most Significant Cloud Type: medium
34%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

E
E

4 / 6 mph 90 / 95°F 61% 1007 mb
Low level cloud: 19%
Mid level cloud: 27%
High level cloud: 8%
Most Significant Cloud Type: low
29%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

ENE
ENE

2 / 4 mph 78 / 85°F 95% 1008 mb
Low level cloud: 0%
Mid level cloud: 17%
High level cloud: 17%
Most Significant Cloud Type: medium
18%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
21:00

ENE
ENE

1 / 2 mph 76 / 81°F 98% 1010 mb
Low level cloud: 13%
Mid level cloud: 25%
High level cloud: 12%
Most Significant Cloud Type: low
23%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Fri 03
May
00:00

ENE
ENE

0 / 1 mph 75 / 80°F 99% 1010 mb
Low level cloud: 23%
Mid level cloud: 22%
High level cloud: 90%
Most Significant Cloud Type: low
41%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

N
N

1 / 2 mph 74 / 79°F 99% 1008 mb
Low level cloud: 30%
Mid level cloud: 23%
High level cloud: 15%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

NNE
NNE

1 / 2 mph 77 / 78°F 99% 1009 mb
Low level cloud: 29%
Mid level cloud: 18%
High level cloud: 5%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

ESE
ESE

3 / 4 mph 84 / 88°F 81% 1011 mb
Low level cloud: 23%
Mid level cloud: 15%
High level cloud: 3%
Most Significant Cloud Type: low
28%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

E
E

5 / 6 mph 93 / 98°F 53% 1009 mb
Low level cloud: 46%
Mid level cloud: 20%
High level cloud: 5%
Most Significant Cloud Type: low
53%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

ENE
ENE

5 / 7 mph 93 / 98°F 53% 1006 mb
Low level cloud: 7%
Mid level cloud: 43%
High level cloud: 6%
Most Significant Cloud Type: medium
64%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

ENE
ENE

4 / 8 mph 78 / 85°F 94% 1008 mb
Low level cloud: 3%
Mid level cloud: 23%
High level cloud: 21%
Most Significant Cloud Type: medium
32%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
21:00

ENE
ENE

3 / 6 mph 76 / 82°F 97% 1010 mb
Low level cloud: 5%
Mid level cloud: 33%
High level cloud: 19%
Most Significant Cloud Type: medium
47%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
Sat 04
May
00:00

NE
NE

3 / 5 mph 75 / 80°F 98% 1010 mb
Low level cloud: 9%
Mid level cloud: 27%
High level cloud: 32%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

ENE
ENE

3 / 5 mph 74 / 79°F 99% 1009 mb
Low level cloud: 13%
Mid level cloud: 29%
High level cloud: 33%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

ENE
ENE

3 / 6 mph 76 / 78°F 99% 1010 mb
Low level cloud: 15%
Mid level cloud: 30%
High level cloud: 16%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

E
E

4 / 5 mph 87 / 90°F 70% 1012 mb
Low level cloud: 6%
Mid level cloud: 21%
High level cloud: 7%
Most Significant Cloud Type: medium
37%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

E
E

5 / 6 mph 91 / 97°F 61% 1010 mb
Low level cloud: 37%
Mid level cloud: 30%
High level cloud: 6%
Most Significant Cloud Type: low
48%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

ESE
ESE

4 / 7 mph 89 / 96°F 73% 1008 mb
Low level cloud: 33%
Mid level cloud: 45%
High level cloud: 9%
Most Significant Cloud Type: low
49%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

ENE
ENE

3 / 6 mph 78 / 84°F 96% 1009 mb
Low level cloud: 13%
Mid level cloud: 44%
High level cloud: 11%
Most Significant Cloud Type: medium
81%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
21:00

ENE
ENE

3 / 5 mph 76 / 81°F 99% 1011 mb
Low level cloud: 11%
Mid level cloud: 78%
High level cloud: 90%
Most Significant Cloud Type: medium
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
Sun 05
May
00:00

NE
NE

2 / 3 mph 75 / 80°F 98% 1010 mb
Low level cloud: 17%
Mid level cloud: 71%
High level cloud: 60%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

E
E

1 / 2 mph 75 / 80°F 99% 1009 mb
Low level cloud: 27%
Mid level cloud: 60%
High level cloud: 34%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

E
E

3 / 5 mph 77 / 78°F 99% 1010 mb
Low level cloud: 35%
Mid level cloud: 20%
High level cloud: 14%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

ESE
ESE

4 / 5 mph 86 / 90°F 75% 1012 mb
Low level cloud: 6%
Mid level cloud: 18%
High level cloud: 11%
Most Significant Cloud Type: medium
36%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

ESE
ESE

6 / 7 mph 91 / 98°F 55% 1010 mb
Low level cloud: 85%
Mid level cloud: 21%
High level cloud: 32%
Most Significant Cloud Type: low
95%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

E
E

6 / 9 mph 89 / 95°F 66% 1008 mb
Low level cloud: 24%
Mid level cloud: 44%
High level cloud: 11%
Most Significant Cloud Type: low
41%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

ENE
ENE

2 / 5 mph 81 / 88°F 83% 1009 mb
Low level cloud: 10%
Mid level cloud: 28%
High level cloud: 15%
Most Significant Cloud Type: low
21%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

NE
NE

3 / 6 mph 78 / 83°F 91% 1011 mb
Low level cloud: 0%
Mid level cloud: 25%
High level cloud: 27%
Most Significant Cloud Type: medium
25%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
DayLocal TimeDirSpeed/
Gust
Temp/
Feels Like
HumidityPressureCloud AmountPrecip AmountWeather
Mon 06
May
03:00

NNE
NNE

3 / 7 mph 75 / 80°F 99% 1009 mb
Low level cloud: 36%
Mid level cloud: 30%
High level cloud: 86%
Most Significant Cloud Type: low
100%
0.0 In
09:00

SSE
SSE

3 / 6 mph 80 / 88°F 94% 1012 mb
Low level cloud: 12%
Mid level cloud: 37%
High level cloud: 16%
Most Significant Cloud Type: medium
71%
0.0 In
15:00

E
E

4 / 9 mph 91 / 114°F 80% 1007 mb
Low level cloud: 53%
Mid level cloud: 66%
High level cloud: 9%
Most Significant Cloud Type: low
77%
0.0 In
21:00

NE
NE

3 / 7 mph 76 / 81°F 98% 1010 mb
Low level cloud: 3%
Mid level cloud: 46%
High level cloud: 100%
Most Significant Cloud Type: medium
100%
0.0 In
Tue 07
May
03:00

NE
NE

3 / 6 mph 75 / 80°F 99% 1008 mb
Low level cloud: 12%
Mid level cloud: 45%
High level cloud: 20%
Most Significant Cloud Type: medium
100%
0.0 In
09:00

ESE
ESE

3 / 6 mph 79 / 87°F 93% 1011 mb
Low level cloud: 23%
Mid level cloud: 30%
High level cloud: 99%
Most Significant Cloud Type: low
44%
0.0 In
15:00

ESE
ESE

5 / 11 mph 86 / 94°F 68% 1008 mb
Low level cloud: 35%
Mid level cloud: 14%
High level cloud: 15%
Most Significant Cloud Type: low
41%
0.0 In
21:00

ENE
ENE

3 / 7 mph 78 / 82°F 77% 1010 mb
Low level cloud: 0%
Mid level cloud: 44%
High level cloud: 21%
Most Significant Cloud Type: medium
44%
0.0 In
Wed 08
May
03:00

ENE
ENE

2 / 5 mph 78 / 84°F 95% 1009 mb
Low level cloud: 5%
Mid level cloud: 11%
High level cloud: 16%
Most Significant Cloud Type: low
10%
0.0 In
09:00

SE
SE

5 / 11 mph 83 / 88°F 65% 1012 mb
Low level cloud: 9%
Mid level cloud: 26%
High level cloud: 38%
Most Significant Cloud Type: medium
52%
0.0 In
15:00

ENE
ENE

4 / 7 mph 86 / 94°F 67% 1008 mb
Low level cloud: 1%
Mid level cloud: 45%
High level cloud: 12%
Most Significant Cloud Type: medium
47%
0.0 In
21:00

E
E

2 / 4 mph 77 / 83°F 97% 1012 mb
Low level cloud: 1%
Mid level cloud: 51%
High level cloud: 42%
Most Significant Cloud Type: medium
54%
0.1 In
Thu 09
May
03:00

E
E

2 / 4 mph 77 / 83°F 96% 1010 mb
Low level cloud: 10%
Mid level cloud: 18%
High level cloud: 1%
Most Significant Cloud Type: low
16%
0.0 In
09:00

E
E

4 / 9 mph 83 / 89°F 72% 1013 mb
Low level cloud: 4%
Mid level cloud: 31%
High level cloud: 8%
Most Significant Cloud Type: medium
43%
0.0 In
15:00

E
E

4 / 9 mph 84 / 92°F 79% 1010 mb
Low level cloud: 27%
Mid level cloud: 25%
High level cloud: 3%
Most Significant Cloud Type: low
36%
0.1 In
21:00

N
N

3 / 7 mph 76 / 82°F 98% 1012 mb
Low level cloud: 10%
Mid level cloud: 38%
High level cloud: 93%
Most Significant Cloud Type: medium
70%
0.4 In
Fri 10
May
03:00

NNE
NNE

1 / 3 mph 75 / 80°F 99% 1010 mb
Low level cloud: 25%
Mid level cloud: 12%
High level cloud: 21%
Most Significant Cloud Type: low
31%
0.0 In
09:00

ESE
ESE

3 / 6 mph 83 / 90°F 73% 1013 mb
Low level cloud: 37%
Mid level cloud: 31%
High level cloud: 7%
Most Significant Cloud Type: low
48%
0.0 In
15:00

ESE
ESE

3 / 6 mph 86 / 96°F 73% 1008 mb
Low level cloud: 5%
Mid level cloud: 44%
High level cloud: 0%
Most Significant Cloud Type: medium
57%
0.0 In
21:00

ENE
ENE

2 / 3 mph 77 / 83°F 98% 1012 mb
Low level cloud: 10%
Mid level cloud: 45%
High level cloud: 98%
Most Significant Cloud Type: medium
76%
0.5 In
Sat 11
May
03:00

NNE
NNE

0 / 1 mph 75 / 79°F 99% 1010 mb
Low level cloud: 25%
Mid level cloud: 5%
High level cloud: 33%
Most Significant Cloud Type: low
30%
0.0 In
09:00

ENE
ENE

2 / 5 mph 83 / 91°F 76% 1012 mb
Low level cloud: 50%
Mid level cloud: 21%
High level cloud: 10%
Most Significant Cloud Type: low
57%
0.0 In
15:00

ESE
ESE

2 / 5 mph 86 / 91°F 61% 1009 mb
Low level cloud: 0%
Mid level cloud: 26%
High level cloud: 32%
Most Significant Cloud Type: medium
27%
0.0 In
21:00

N
N

1 / 2 mph 77 / 83°F 97% 1011 mb
Low level cloud: 2%
Mid level cloud: 45%
High level cloud: 89%
Most Significant Cloud Type: medium
53%
0.4 In
Sun 12
May
03:00

NNE
NNE

2 / 4 mph 75 / 80°F 95% 1011 mb
Low level cloud: 19%
Mid level cloud: 41%
High level cloud: 12%
Most Significant Cloud Type: low
34%
0.0 In
09:00

SSW
SSW

2 / 4 mph 80 / 88°F 92% 1013 mb
Low level cloud: 10%
Mid level cloud: 46%
High level cloud: 14%
Most Significant Cloud Type: medium
75%
0.1 In
15:00

NNE
NNE

2 / 4 mph 85 / 97°F 78% 1011 mb
Low level cloud: 37%
Mid level cloud: 41%
High level cloud: 11%
Most Significant Cloud Type: low
52%
0.2 In
21:00

NNW
NNW

4 / 8 mph 73 / 78°F 99% 1013 mb
Low level cloud: 48%
Mid level cloud: 64%
High level cloud: 42%
Most Significant Cloud Type: low
75%
0.4 In
Mon 13
May
03:00

N
N

2 / 4 mph 75 / 80°F 99% 1012 mb
Low level cloud: 42%
Mid level cloud: 96%
High level cloud: 4%
Most Significant Cloud Type: low
76%
0.2 In
09:00

ESE
ESE

3 / 6 mph 82 / 88°F 72% 1012 mb
Low level cloud: 31%
Mid level cloud: 22%
High level cloud: 3%
Most Significant Cloud Type: low
39%
0.0 In
15:00

WNW
WNW

0 / 1 mph 82 / 92°F 91% 1012 mb
Low level cloud: 56%
Mid level cloud: 43%
High level cloud: 3%
Most Significant Cloud Type: low
71%
0.2 In
21:00

NE
NE

2 / 5 mph 77 / 82°F 97% 1011 mb
Low level cloud: 1%
Mid level cloud: 30%
High level cloud: 15%
Most Significant Cloud Type: medium
33%
0.1 In
Tue 14
May
03:00

N
N

2 / 5 mph 75 / 80°F 99% 1011 mb
Low level cloud: 30%
Mid level cloud: 45%
High level cloud: 19%
Most Significant Cloud Type: low
48%
0.2 In
09:00

E
E

3 / 6 mph 84 / 91°F 72% 1012 mb
Low level cloud: 16%
Mid level cloud: 46%
High level cloud: 8%
Most Significant Cloud Type: medium
91%
0.0 In
15:00

NW
NW

2 / 4 mph 83 / 96°F 90% 1010 mb
Low level cloud: 17%
Mid level cloud: 41%
High level cloud: 9%
Most Significant Cloud Type: low
32%
0.2 In
21:00

NNE
NNE

3 / 6 mph 76 / 82°F 98% 1011 mb
Low level cloud: 42%
Mid level cloud: 52%
High level cloud: 19%
Most Significant Cloud Type: low
62%
0.3 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