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Almirante Tamandare 14 Day Long Range Forecast

14 Day weather providing an extended long range forecast outlook for Almirante Tamandare

Brazil

Long range weather outlook for Almirante Tamandare includes 14 day forecast summary:

For Almirante Tamandare in the coming two weeks the average daytime maximum temperature will be around 26°C, with a high for the two weeks of 30°C expected on the afternoon of Thursday 9th. The average minimum temperature will be 16°C, dipping to its lowest on the evening of Monday 13th at 12°C. The coming 14 days will remain predominantly dry. On the whole winds are likely to be light.

DayLocal TimeDirSpeed/
Gust		Temp/
Feels Like		HumidityPressureCloud AmountPrecip AmountWeather
Tue 07
May		01:00

NNE
NNE

 2 / 4 mph 66 / 66°F 60% 1016 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: medium
3%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

NNE
NNE

 2 / 3 mph 64 / 64°F 63% 1015 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: medium
4%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

N
N

 3 / 5 mph 63 / 62°F 69% 1016 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: medium
6%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

NNW
NNW

 4 / 5 mph 74 / 76°F 51% 1017 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: medium
5%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

NNW
NNW

 6 / 7 mph 83 / 81°F 38% 1015 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: medium
5%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

N
N

 4 / 5 mph 85 / 82°F 34% 1012 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: medium
4%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

NE
NE

 3 / 5 mph 76 / 78°F 56% 1013 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: medium
3%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

NE
NE

 1 / 2 mph 71 / 71°F 61% 1015 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: medium
3%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Wed 08
May		01:00

NE
NE

 2 / 4 mph 67 / 67°F 64% 1015 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: medium
5%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

NE
NE

 2 / 5 mph 65 / 65°F 68% 1014 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: medium
4%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

N
N

 3 / 6 mph 64 / 64°F 74% 1015 mb
Low level cloud: 0%
Mid level cloud: 12%
High level cloud: 0%
Most Significant Cloud Type: medium
12%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

N
N

 7 / 9 mph 73 / 76°F 58% 1015 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
13:00

NNW
NNW

 8 / 9 mph 82 / 81°F 46% 1014 mb
Low level cloud: 0%
Mid level cloud: 16%
High level cloud: 0%
Most Significant Cloud Type: medium
15%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

NNW
NNW

 9 / 11 mph 85 / 83°F 37% 1011 mb
Low level cloud: 0%
Mid level cloud: 41%
High level cloud: 0%
Most Significant Cloud Type: medium
41%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

WNW
WNW

 2 / 4 mph 74 / 77°F 61% 1014 mb
Low level cloud: 0%
Mid level cloud: 20%
High level cloud: 0%
Most Significant Cloud Type: medium
19%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

N
N

 2 / 4 mph 72 / 76°F 59% 1016 mb
Low level cloud: 0%
Mid level cloud: 32%
High level cloud: 0%
Most Significant Cloud Type: medium
31%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Thu 09
May		01:00

N
N

 3 / 6 mph 69 / 69°F 67% 1016 mb
Low level cloud: 0%
Mid level cloud: 24%
High level cloud: 0%
Most Significant Cloud Type: medium
23%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

NNW
NNW

 3 / 6 mph 67 / 67°F 69% 1015 mb
Low level cloud: 0%
Mid level cloud: 11%
High level cloud: 4%
Most Significant Cloud Type: medium
11%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

NNW
NNW

 4 / 8 mph 66 / 66°F 67% 1016 mb
Low level cloud: 0%
Mid level cloud: 16%
High level cloud: 6%
Most Significant Cloud Type: medium
15%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

WNW
WNW

 5 / 6 mph 75 / 76°F 53% 1017 mb
Low level cloud: 0%
Mid level cloud: 11%
High level cloud: 13%
Most Significant Cloud Type: medium
11%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

WNW
WNW

 7 / 8 mph 84 / 82°F 38% 1016 mb
Low level cloud: 0%
Mid level cloud: 12%
High level cloud: 11%
Most Significant Cloud Type: medium
12%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

W
W

 8 / 9 mph 87 / 84°F 33% 1013 mb
Low level cloud: 0%
Mid level cloud: 45%
High level cloud: 0%
Most Significant Cloud Type: medium
44%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

SW
SW

 1 / 3 mph 75 / 78°F 55% 1015 mb
Low level cloud: 0%
Mid level cloud: 52%
High level cloud: 0%
Most Significant Cloud Type: medium
51%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

SE
SE

 3 / 6 mph 69 / 69°F 79% 1018 mb
Low level cloud: 0%
Mid level cloud: 44%
High level cloud: 0%
Most Significant Cloud Type: medium
44%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Fri 10
May		01:00

ESE
ESE

 4 / 6 mph 66 / 66°F 92% 1018 mb
Low level cloud: 62%
Mid level cloud: 18%
High level cloud: 0%
Most Significant Cloud Type: low
68%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

ENE
ENE

 5 / 6 mph 64 / 64°F 94% 1017 mb
Low level cloud: 75%
Mid level cloud: 11%
High level cloud: 0%
Most Significant Cloud Type: low
79%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

ENE
ENE

 4 / 5 mph 63 / 63°F 92% 1017 mb
Low level cloud: 72%
Mid level cloud: 13%
High level cloud: 0%
Most Significant Cloud Type: low
76%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

ENE
ENE

 4 / 6 mph 65 / 64°F 90% 1018 mb
Low level cloud: 65%
Mid level cloud: 17%
High level cloud: 0%
Most Significant Cloud Type: low
70%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

ENE
ENE

 5 / 6 mph 69 / 68°F 77% 1017 mb
Low level cloud: 71%
Mid level cloud: 18%
High level cloud: 7%
Most Significant Cloud Type: low
78%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

ENE
ENE

 7 / 8 mph 71 / 69°F 75% 1015 mb
Low level cloud: 15%
Mid level cloud: 26%
High level cloud: 3%
Most Significant Cloud Type: low
24%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

E
E

 6 / 7 mph 62 / 62°F 94% 1016 mb
Low level cloud: 63%
Mid level cloud: 15%
High level cloud: 0%
Most Significant Cloud Type: low
67%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

E
E

 4 / 6 mph 61 / 61°F 96% 1017 mb
Low level cloud: 87%
Mid level cloud: 15%
High level cloud: 1%
Most Significant Cloud Type: low
92%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sat 11
May		01:00

ENE
ENE

 4 / 6 mph 60 / 60°F 94% 1017 mb
Low level cloud: 79%
Mid level cloud: 11%
High level cloud: 1%
Most Significant Cloud Type: low
83%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

ENE
ENE

 4 / 5 mph 60 / 60°F 95% 1016 mb
Low level cloud: 81%
Mid level cloud: 13%
High level cloud: 17%
Most Significant Cloud Type: low
87%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

ENE
ENE

 3 / 5 mph 60 / 60°F 94% 1016 mb
Low level cloud: 74%
Mid level cloud: 7%
High level cloud: 5%
Most Significant Cloud Type: low
76%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

NNE
NNE

 4 / 5 mph 66 / 64°F 82% 1017 mb
Low level cloud: 22%
Mid level cloud: 8%
High level cloud: 6%
Most Significant Cloud Type: low
25%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

NNW
NNW

 7 / 8 mph 79 / 79°F 50% 1014 mb
Low level cloud: 0%
Mid level cloud: 9%
High level cloud: 2%
Most Significant Cloud Type: medium
9%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

NNW
NNW

 5 / 6 mph 82 / 81°F 43% 1011 mb
Low level cloud: 0%
Mid level cloud: 31%
High level cloud: 0%
Most Significant Cloud Type: medium
31%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

NW
NW

 4 / 6 mph 74 / 77°F 58% 1011 mb
Low level cloud: 0%
Mid level cloud: 8%
High level cloud: 15%
Most Significant Cloud Type: medium
8%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

NNW
NNW

 2 / 3 mph 70 / 70°F 71% 1013 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: medium
6%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sun 12
May		01:00

N
N

 3 / 6 mph 66 / 66°F 76% 1013 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
04:00

NNW
NNW

 3 / 7 mph 64 / 64°F 78% 1012 mb
Low level cloud: 0%
Mid level cloud: 11%
High level cloud: 0%
Most Significant Cloud Type: medium
11%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

NNW
NNW

 4 / 8 mph 62 / 62°F 72% 1012 mb
Low level cloud: 0%
Mid level cloud: 18%
High level cloud: 0%
Most Significant Cloud Type: medium
17%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

NNW
NNW

 7 / 9 mph 74 / 76°F 51% 1013 mb
Low level cloud: 0%
Mid level cloud: 21%
High level cloud: 0%
Most Significant Cloud Type: medium
20%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

NW
NW

 11 / 13 mph 87 / 84°F 31% 1010 mb
Low level cloud: 0%
Mid level cloud: 19%
High level cloud: 0%
Most Significant Cloud Type: medium
18%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

WNW
WNW

 10 / 11 mph 87 / 84°F 33% 1008 mb
Low level cloud: 0%
Mid level cloud: 30%
High level cloud: 0%
Most Significant Cloud Type: medium
30%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

WNW
WNW

 7 / 10 mph 78 / 79°F 44% 1011 mb
Low level cloud: 0%
Mid level cloud: 25%
High level cloud: 0%
Most Significant Cloud Type: medium
25%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

WNW
WNW

 2 / 3 mph 73 / 77°F 57% 1014 mb
Low level cloud: 0%
Mid level cloud: 24%
High level cloud: 0%
Most Significant Cloud Type: medium
24%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Mon 13
May		01:00

ENE
ENE

 2 / 4 mph 68 / 68°F 69% 1014 mb
Low level cloud: 0%
Mid level cloud: 28%
High level cloud: 0%
Most Significant Cloud Type: medium
27%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

ESE
ESE

 4 / 5 mph 63 / 63°F 88% 1015 mb
Low level cloud: 25%
Mid level cloud: 15%
High level cloud: 0%
Most Significant Cloud Type: low
30%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

E
E

 5 / 7 mph 61 / 61°F 94% 1017 mb
Low level cloud: 76%
Mid level cloud: 25%
High level cloud: 0%
Most Significant Cloud Type: low
84%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

ENE
ENE

 6 / 7 mph 60 / 60°F 92% 1019 mb
Low level cloud: 97%
Mid level cloud: 46%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

E
E

 6 / 7 mph 60 / 60°F 87% 1019 mb
Low level cloud: 98%
Mid level cloud: 43%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

ENE
ENE

 6 / 7 mph 58 / 57°F 88% 1018 mb
Low level cloud: 93%
Mid level cloud: 45%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

E
E

 6 / 7 mph 56 / 55°F 93% 1019 mb
Low level cloud: 89%
Mid level cloud: 73%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

ENE
ENE

 5 / 7 mph 55 / 54°F 95% 1019 mb
Low level cloud: 84%
Mid level cloud: 26%
High level cloud: 0%
Most Significant Cloud Type: low
93%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
DayLocal TimeDirSpeed/
Gust		Temp/
Feels Like		HumidityPressureCloud AmountPrecip AmountWeather
Tue 14
May		04:00

ENE
ENE

 3 / 4 mph 58 / 59°F 97% 1017 mb
Low level cloud: 85%
Mid level cloud: 18%
High level cloud: 0%
Most Significant Cloud Type: low
91%
0.0 In
10:00

N
N

 5 / 6 mph 62 / 62°F 83% 1017 mb
Low level cloud: 26%
Mid level cloud: 14%
High level cloud: 32%
Most Significant Cloud Type: low
34%
0.0 In
16:00

NNW
NNW

 7 / 8 mph 86 / 86°F 41% 1011 mb
Low level cloud: 0%
Mid level cloud: 21%
High level cloud: 0%
Most Significant Cloud Type: medium
20%
0.0 In
22:00

NNW
NNW

 3 / 4 mph 74 / 77°F 72% 1011 mb
Low level cloud: 0%
Mid level cloud: 7%
High level cloud: 93%
Most Significant Cloud Type: medium
10%
0.0 In
Wed 15
May		04:00

N
N

 2 / 4 mph 71 / 71°F 74% 1012 mb
Low level cloud: 0%
Mid level cloud: 13%
High level cloud: 0%
Most Significant Cloud Type: medium
12%
0.0 In
10:00

WNW
WNW

 8 / 11 mph 72 / 76°F 59% 1010 mb
Low level cloud: 0%
Mid level cloud: 30%
High level cloud: 0%
Most Significant Cloud Type: medium
30%
0.0 In
16:00

NW
NW

 11 / 13 mph 85 / 84°F 37% 1007 mb
Low level cloud: 0%
Mid level cloud: 17%
High level cloud: 100%
Most Significant Cloud Type: medium
20%
0.0 In
22:00

SSW
SSW

 2 / 2 mph 62 / 62°F 99% 1016 mb
Low level cloud: 82%
Mid level cloud: 26%
High level cloud: 0%
Most Significant Cloud Type: low
91%
0.8 In
Thu 16
May		04:00

W
W

 6 / 10 mph 74 / 77°F 53% 1009 mb
Low level cloud: 0%
Mid level cloud: 29%
High level cloud: 0%
Most Significant Cloud Type: medium
29%
0.0 In
10:00

E
E

 2 / 2 mph 60 / 60°F 97% 1017 mb
Low level cloud: 84%
Mid level cloud: 18%
High level cloud: 0%
Most Significant Cloud Type: low
90%
0.0 In
16:00

WNW
WNW

 5 / 6 mph 68 / 68°F 95% 1014 mb
Low level cloud: 76%
Mid level cloud: 29%
High level cloud: 99%
Most Significant Cloud Type: low
98%
0.4 In
22:00

E
E

 3 / 4 mph 60 / 60°F 98% 1019 mb
Low level cloud: 93%
Mid level cloud: 24%
High level cloud: 1%
Most Significant Cloud Type: low
100%
0.0 In
Fri 17
May		04:00

S
S

 3 / 5 mph 62 / 62°F 95% 1019 mb
Low level cloud: 43%
Mid level cloud: 4%
High level cloud: 32%
Most Significant Cloud Type: low
47%
0.0 In
10:00

E
E

 3 / 4 mph 60 / 60°F 97% 1022 mb
Low level cloud: 97%
Mid level cloud: 69%
High level cloud: 59%
Most Significant Cloud Type: low
100%
0.0 In
16:00

ENE
ENE

 5 / 7 mph 73 / 77°F 63% 1020 mb
Low level cloud: 6%
Mid level cloud: 15%
High level cloud: 17%
Most Significant Cloud Type: low
13%
0.0 In
22:00

E
E

 3 / 4 mph 61 / 61°F 98% 1022 mb
Low level cloud: 94%
Mid level cloud: 46%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.0 In
Sat 18
May		04:00

ENE
ENE

 3 / 4 mph 54 / 54°F 95% 1022 mb
Low level cloud: 69%
Mid level cloud: 0%
High level cloud: 100%
Most Significant Cloud Type: low
80%
0.0 In
10:00

NE
NE

 4 / 5 mph 64 / 64°F 94% 1020 mb
Low level cloud: 85%
Mid level cloud: 14%
High level cloud: 70%
Most Significant Cloud Type: low
98%
0.0 In
16:00

ESE
ESE

 3 / 4 mph 70 / 70°F 74% 1018 mb
Low level cloud: 25%
Mid level cloud: 45%
High level cloud: 70%
Most Significant Cloud Type: low
49%
0.1 In
22:00

NNW
NNW

 3 / 4 mph 73 / 78°F 90% 1015 mb
Low level cloud: 8%
Mid level cloud: 8%
High level cloud: 12%
Most Significant Cloud Type: low
12%
0.0 In
Sun 19
May		04:00

ENE
ENE

 2 / 4 mph 61 / 61°F 99% 1015 mb
Low level cloud: 96%
Mid level cloud: 7%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.0 In
10:00

NE
NE

 3 / 4 mph 67 / 67°F 91% 1017 mb
Low level cloud: 54%
Mid level cloud: 23%
High level cloud: 100%
Most Significant Cloud Type: low
73%
0.0 In
16:00

WNW
WNW

 7 / 11 mph 80 / 82°F 57% 1012 mb
Low level cloud: 0%
Mid level cloud: 20%
High level cloud: 58%
Most Significant Cloud Type: medium
22%
0.0 In
22:00

NW
NW

 0 / 0 mph 65 / 65°F 90% 1018 mb
Low level cloud: 4%
Mid level cloud: 43%
High level cloud: 70%
Most Significant Cloud Type: medium
56%
0.1 In
Mon 20
May		04:00

SE
SE

 2 / 2 mph 70 / 70°F 86% 1014 mb
Low level cloud: 2%
Mid level cloud: 16%
High level cloud: 2%
Most Significant Cloud Type: medium
21%
0.0 In
10:00

NNW
NNW

 1 / 2 mph 67 / 67°F 89% 1016 mb
Low level cloud: 15%
Mid level cloud: 31%
High level cloud: 78%
Most Significant Cloud Type: low
35%
0.0 In
16:00

W
W

 3 / 5 mph 78 / 80°F 56% 1013 mb
Low level cloud: 0%
Mid level cloud: 32%
High level cloud: 26%
Most Significant Cloud Type: medium
32%
0.0 In
22:00

ESE
ESE

 3 / 6 mph 66 / 65°F 94% 1015 mb
Low level cloud: 54%
Mid level cloud: 14%
High level cloud: 8%
Most Significant Cloud Type: low
59%
0.0 In
Tue 21
May		04:00

E
E

 4 / 7 mph 62 / 62°F 96% 1014 mb
Low level cloud: 90%
Mid level cloud: 16%
High level cloud: 1%
Most Significant Cloud Type: low
96%
0.0 In

Other Locations Near to Almirante Tamandare

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