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Comodoro Rivadavia 14 Day Long Range Forecast

14 Day weather providing an extended long range forecast outlook for Comodoro Rivadavia

Argentina

Long range weather outlook for Comodoro Rivadavia includes 14 day forecast summary:

The outlook for Comodoro Rivadavia in the two weeks ahead shows the average daytime maximum temperature will be around 10°C, with a high for the two weeks of 11°C expected on the afternoon of Friday 3rd. The average minimum temperature will be 4°C, dipping to its lowest on the morning of Tuesday 7th at 2°C. Expect the following 14 days ahead to have mostly dry days although Tuesday 30th and Friday 03rd are likely to see a little rain. The current forecast indicates Tuesday 30th will have the most precipitation with an accumulation of around 3.0mm. On the whole winds are likely to be moderate. Expect the strongest wind on the evening of Tuesday 30th, coming from a southerly direction, and reaching around 40mph.

DayLocal TimeDirSpeed/
Gust
Temp/
Feels Like
HumidityPressureCloud AmountPrecip AmountWeather
Tue 30
Apr
18:00

SSW
SSW

40 / 46 mph 42 / 30°F 92% 997 mb
Low level cloud: 99%
Mid level cloud: 100%
High level cloud: 56%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
21:00

SSW
SSW

38 / 44 mph 44 / 32°F 64% 1004 mb
Low level cloud: 64%
Mid level cloud: 44%
High level cloud: 32%
Most Significant Cloud Type: low
83%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
Wed 01
May
00:00

SW
SW

34 / 39 mph 43 / 31°F 61% 1008 mb
Low level cloud: 100%
Mid level cloud: 13%
High level cloud: 30%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

SW
SW

29 / 34 mph 41 / 30°F 60% 1011 mb
Low level cloud: 30%
Mid level cloud: 4%
High level cloud: 16%
Most Significant Cloud Type: low
33%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

SW
SW

24 / 30 mph 40 / 29°F 57% 1012 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 18%
Most Significant Cloud Type: high
17%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

WSW
WSW

17 / 23 mph 39 / 29°F 57% 1013 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 2%
Most Significant Cloud Type: high
1%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

SW
SW

20 / 23 mph 44 / 35°F 44% 1015 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

SSW
SSW

18 / 21 mph 47 / 39°F 38% 1014 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 21%
Most Significant Cloud Type: medium
4%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

SSW
SSW

12 / 14 mph 46 / 40°F 45% 1014 mb
Low level cloud: 3%
Mid level cloud: 3%
High level cloud: 12%
Most Significant Cloud Type: low
5%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

SW
SW

6 / 9 mph 42 / 38°F 50% 1015 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 3%
Most Significant Cloud Type: high
3%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Thu 02
May
00:00

W
W

6 / 10 mph 39 / 35°F 51% 1015 mb
Low level cloud: 0%
Mid level cloud: 1%
High level cloud: 0%
Most Significant Cloud Type: high
0%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

W
W

7 / 11 mph 37 / 32°F 57% 1016 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 20%
Most Significant Cloud Type: medium
3%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

W
W

6 / 11 mph 36 / 31°F 65% 1015 mb
Low level cloud: 0%
Mid level cloud: 1%
High level cloud: 0%
Most Significant Cloud Type: high
0%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

W
W

6 / 10 mph 36 / 31°F 67% 1016 mb
Low level cloud: 0%
Mid level cloud: 1%
High level cloud: 3%
Most Significant Cloud Type: medium
1%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

WSW
WSW

3 / 4 mph 44 / 42°F 52% 1015 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 6%
Most Significant Cloud Type: medium
6%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

SW
SW

6 / 6 mph 48 / 46°F 48% 1013 mb
Low level cloud: 9%
Mid level cloud: 7%
High level cloud: 2%
Most Significant Cloud Type: low
11%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

WNW
WNW

6 / 7 mph 47 / 44°F 51% 1012 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: medium
4%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

WNW
WNW

7 / 11 mph 42 / 38°F 62% 1012 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 3%
Most Significant Cloud Type: high
3%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Fri 03
May
00:00

NW
NW

8 / 15 mph 41 / 35°F 64% 1010 mb
Low level cloud: 0%
Mid level cloud: 1%
High level cloud: 33%
Most Significant Cloud Type: high
32%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

NW
NW

8 / 14 mph 40 / 35°F 64% 1008 mb
Low level cloud: 0%
Mid level cloud: 7%
High level cloud: 100%
Most Significant Cloud Type: medium
11%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

NW
NW

9 / 16 mph 38 / 32°F 67% 1006 mb
Low level cloud: 0%
Mid level cloud: 45%
High level cloud: 12%
Most Significant Cloud Type: medium
44%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

NW
NW

8 / 15 mph 38 / 32°F 67% 1004 mb
Low level cloud: 0%
Mid level cloud: 22%
High level cloud: 100%
Most Significant Cloud Type: medium
25%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

NW
NW

8 / 9 mph 48 / 44°F 50% 1002 mb
Low level cloud: 0%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

NW
NW

7 / 8 mph 52 / 49°F 43% 999 mb
Low level cloud: 0%
Mid level cloud: 51%
High level cloud: 32%
Most Significant Cloud Type: medium
52%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

NNW
NNW

12 / 15 mph 51 / 47°F 46% 997 mb
Low level cloud: 0%
Mid level cloud: 22%
High level cloud: 0%
Most Significant Cloud Type: medium
22%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

NW
NW

5 / 9 mph 48 / 46°F 54% 996 mb
Low level cloud: 0%
Mid level cloud: 46%
High level cloud: 75%
Most Significant Cloud Type: medium
48%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sat 04
May
00:00

NW
NW

6 / 12 mph 46 / 42°F 57% 995 mb
Low level cloud: 0%
Mid level cloud: 40%
High level cloud: 0%
Most Significant Cloud Type: medium
40%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

WNW
WNW

24 / 37 mph 47 / 38°F 58% 994 mb
Low level cloud: 0%
Mid level cloud: 1%
High level cloud: 20%
Most Significant Cloud Type: medium
2%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

WNW
WNW

24 / 39 mph 46 / 37°F 61% 994 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

WNW
WNW

19 / 34 mph 43 / 35°F 64% 995 mb
Low level cloud: 0%
Mid level cloud: 1%
High level cloud: 2%
Most Significant Cloud Type: high
1%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

WNW
WNW

17 / 19 mph 51 / 46°F 49% 995 mb
Low level cloud: 0%
Mid level cloud: 9%
High level cloud: 33%
Most Significant Cloud Type: medium
9%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

W
W

18 / 21 mph 52 / 46°F 42% 995 mb
Low level cloud: 0%
Mid level cloud: 99%
High level cloud: 19%
Most Significant Cloud Type: medium
99%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

WSW
WSW

12 / 15 mph 50 / 45°F 46% 995 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 13%
Most Significant Cloud Type: medium
4%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

SSW
SSW

14 / 17 mph 45 / 39°F 68% 997 mb
Low level cloud: 75%
Mid level cloud: 42%
High level cloud: 4%
Most Significant Cloud Type: low
90%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sun 05
May
00:00

SSW
SSW

16 / 18 mph 41 / 32°F 74% 998 mb
Low level cloud: 72%
Mid level cloud: 16%
High level cloud: 0%
Most Significant Cloud Type: low
77%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

W
W

8 / 10 mph 38 / 32°F 72% 1000 mb
Low level cloud: 0%
Mid level cloud: 46%
High level cloud: 31%
Most Significant Cloud Type: medium
47%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

WNW
WNW

3 / 4 mph 39 / 37°F 65% 1001 mb
Low level cloud: 64%
Mid level cloud: 44%
High level cloud: 8%
Most Significant Cloud Type: low
80%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

WNW
WNW

6 / 10 mph 38 / 33°F 69% 1001 mb
Low level cloud: 0%
Mid level cloud: 8%
High level cloud: 0%
Most Significant Cloud Type: medium
8%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

W
W

19 / 21 mph 46 / 39°F 40% 1001 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 33%
Most Significant Cloud Type: medium
5%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

W
W

18 / 21 mph 49 / 43°F 32% 1001 mb
Low level cloud: 0%
Mid level cloud: 97%
High level cloud: 20%
Most Significant Cloud Type: medium
98%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

WNW
WNW

14 / 17 mph 48 / 42°F 39% 1000 mb
Low level cloud: 0%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

NNW
NNW

7 / 12 mph 44 / 40°F 44% 1000 mb
Low level cloud: 0%
Mid level cloud: 100%
High level cloud: 31%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Mon 06
May
00:00

NNW
NNW

10 / 17 mph 41 / 35°F 65% 1000 mb
Low level cloud: 0%
Mid level cloud: 22%
High level cloud: 0%
Most Significant Cloud Type: medium
21%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

NW
NW

6 / 11 mph 40 / 36°F 69% 1001 mb
Low level cloud: 0%
Mid level cloud: 100%
High level cloud: 0%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

NW
NW

5 / 10 mph 40 / 36°F 68% 1001 mb
Low level cloud: 0%
Mid level cloud: 46%
High level cloud: 6%
Most Significant Cloud Type: medium
46%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

WNW
WNW

9 / 18 mph 39 / 33°F 66% 1003 mb
Low level cloud: 0%
Mid level cloud: 14%
High level cloud: 0%
Most Significant Cloud Type: medium
14%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

WSW
WSW

13 / 15 mph 49 / 44°F 37% 1006 mb
Low level cloud: 0%
Mid level cloud: 12%
High level cloud: 1%
Most Significant Cloud Type: medium
11%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

W
W

14 / 16 mph 49 / 44°F 27% 1007 mb
Low level cloud: 0%
Mid level cloud: 23%
High level cloud: 4%
Most Significant Cloud Type: medium
22%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

W
W

15 / 18 mph 46 / 39°F 40% 1008 mb
Low level cloud: 0%
Mid level cloud: 45%
High level cloud: 18%
Most Significant Cloud Type: medium
46%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

WSW
WSW

12 / 14 mph 43 / 37°F 43% 1011 mb
Low level cloud: 0%
Mid level cloud: 100%
High level cloud: 0%
Most Significant Cloud Type: medium
99%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
DayLocal TimeDirSpeed/
Gust
Temp/
Feels Like
HumidityPressureCloud AmountPrecip AmountWeather
Tue 07
May
03:00

WSW
WSW

10 / 16 mph 33 / 25°F 68% 1019 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 5%
Most Significant Cloud Type: high
4%
0.0 In
09:00

WNW
WNW

13 / 28 mph 31 / 20°F 56% 1018 mb
Low level cloud: 0%
Mid level cloud: 23%
High level cloud: 0%
Most Significant Cloud Type: medium
22%
0.0 In
15:00

W
W

16 / 21 mph 45 / 37°F 38% 1017 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
21:00

SSW
SSW

11 / 17 mph 48 / 44°F 67% 1014 mb
Low level cloud: 15%
Mid level cloud: 27%
High level cloud: 11%
Most Significant Cloud Type: low
25%
0.0 In
Wed 08
May
03:00

NW
NW

8 / 16 mph 33 / 27°F 58% 1020 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 6%
Most Significant Cloud Type: medium
2%
0.0 In
09:00

W
W

23 / 32 mph 46 / 38°F 57% 996 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: medium
5%
0.0 In
15:00

WNW
WNW

19 / 24 mph 54 / 49°F 45% 1009 mb
Low level cloud: 0%
Mid level cloud: 24%
High level cloud: 32%
Most Significant Cloud Type: medium
25%
0.0 In
21:00

WNW
WNW

7 / 10 mph 47 / 43°F 41% 1022 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 1%
Most Significant Cloud Type: medium
3%
0.0 In
Thu 09
May
03:00

SW
SW

11 / 18 mph 43 / 37°F 69% 1014 mb
Low level cloud: 0%
Mid level cloud: 22%
High level cloud: 7%
Most Significant Cloud Type: medium
22%
0.0 In
09:00

WNW
WNW

9 / 20 mph 37 / 30°F 68% 1024 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 84%
Most Significant Cloud Type: medium
8%
0.0 In
15:00

SSW
SSW

12 / 15 mph 47 / 42°F 58% 1019 mb
Low level cloud: 34%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: low
34%
0.0 In
21:00

NNE
NNE

3 / 5 mph 43 / 42°F 52% 1025 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: medium
4%
0.0 In
Fri 10
May
03:00

SW
SW

7 / 9 mph 43 / 39°F 85% 1021 mb
Low level cloud: 90%
Mid level cloud: 68%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.1 In
09:00

WNW
WNW

7 / 14 mph 34 / 28°F 62% 1021 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: medium
2%
0.0 In
15:00

SW
SW

2 / 2 mph 50 / 50°F 55% 1017 mb
Low level cloud: 77%
Mid level cloud: 100%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.0 In
21:00

N
N

6 / 11 mph 47 / 44°F 48% 1012 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 18%
Most Significant Cloud Type: high
17%
0.0 In
Sat 11
May
03:00

WNW
WNW

10 / 21 mph 36 / 29°F 69% 1013 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 3%
Most Significant Cloud Type: medium
3%
0.0 In
09:00

WNW
WNW

7 / 15 mph 43 / 39°F 47% 1005 mb
Low level cloud: 0%
Mid level cloud: 97%
High level cloud: 100%
Most Significant Cloud Type: medium
100%
0.0 In
15:00

NW
NW

10 / 13 mph 56 / 54°F 42% 1007 mb
Low level cloud: 0%
Mid level cloud: 33%
High level cloud: 12%
Most Significant Cloud Type: medium
33%
0.0 In
21:00

NW
NW

6 / 11 mph 48 / 45°F 40% 1004 mb
Low level cloud: 0%
Mid level cloud: 72%
High level cloud: 15%
Most Significant Cloud Type: medium
72%
0.0 In
Sun 12
May
03:00

NNW
NNW

7 / 13 mph 46 / 43°F 54% 1002 mb
Low level cloud: 0%
Mid level cloud: 90%
High level cloud: 39%
Most Significant Cloud Type: medium
91%
0.0 In
09:00

W
W

3 / 6 mph 43 / 42°F 43% 1007 mb
Low level cloud: 0%
Mid level cloud: 45%
High level cloud: 40%
Most Significant Cloud Type: medium
46%
0.0 In
15:00

WNW
WNW

21 / 28 mph 54 / 49°F 38% 1001 mb
Low level cloud: 0%
Mid level cloud: 8%
High level cloud: 2%
Most Significant Cloud Type: medium
7%
0.0 In
21:00

WNW
WNW

5 / 9 mph 44 / 41°F 58% 1010 mb
Low level cloud: 0%
Mid level cloud: 7%
High level cloud: 0%
Most Significant Cloud Type: medium
7%
0.0 In
Mon 13
May
03:00

W
W

14 / 26 mph 39 / 31°F 62% 1006 mb
Low level cloud: 0%
Mid level cloud: 97%
High level cloud: 0%
Most Significant Cloud Type: medium
97%
0.0 In
09:00

WSW
WSW

8 / 14 mph 37 / 31°F 71% 1012 mb
Low level cloud: 8%
Mid level cloud: 63%
High level cloud: 0%
Most Significant Cloud Type: medium
84%
0.0 In
15:00

WSW
WSW

32 / 41 mph 54 / 47°F 41% 999 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: medium
5%
0.0 In
21:00

W
W

10 / 18 mph 42 / 37°F 47% 1014 mb
Low level cloud: 0%
Mid level cloud: 16%
High level cloud: 7%
Most Significant Cloud Type: medium
16%
0.0 In
Tue 14
May
03:00

SW
SW

31 / 42 mph 39 / 27°F 44% 1011 mb
Low level cloud: 0%
Mid level cloud: 44%
High level cloud: 4%
Most Significant Cloud Type: medium
43%
0.2 In
09:00

WNW
WNW

14 / 29 mph 38 / 29°F 71% 1015 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 77%
Most Significant Cloud Type: medium
6%
0.0 In
15:00

SSW
SSW

29 / 38 mph 46 / 36°F 39% 1014 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: medium
4%
0.0 In
21:00

WNW
WNW

14 / 27 mph 49 / 43°F 56% 1012 mb
Low level cloud: 0%
Mid level cloud: 25%
High level cloud: 64%
Most Significant Cloud Type: medium
28%
0.0 In
Wed 15
May
03:00

WSW
WSW

13 / 18 mph 43 / 36°F 78% 1013 mb
Low level cloud: 98%
Mid level cloud: 80%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.0 In
09:00

WNW
WNW

11 / 22 mph 39 / 32°F 71% 1011 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 4%
Most Significant Cloud Type: high
3%
0.0 In
15:00

W
W

8 / 17 mph 54 / 51°F 59% 1014 mb
Low level cloud: 0%
Mid level cloud: 100%
High level cloud: 8%
Most Significant Cloud Type: medium
100%
0.2 In
21:00

WNW
WNW

10 / 21 mph 45 / 40°F 60% 1009 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 3%
Most Significant Cloud Type: medium
4%
0.0 In

Other Locations Near to Comodoro Rivadavia

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