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Hvalynsk 14 Day Long Range Forecast

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

Russia

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

The next 14 day outlook for Hvalynsk shows the average daytime maximum temperature will be around 20°C, with a high for the two weeks of 25°C expected on the afternoon of Monday 27th. The mean minimum temperature will be 9°C, dipping to its lowest on the morning of Friday 24th at 4°C. Expect the next 14 days have mixed weather with some days dry and some seeing a little rain. It looks like Thursday 23rd will have the most precipitation with an accumulation of around 7.0mm. On the whole winds are likely to be light.

DayLocal TimeDirSpeed/
Gust
Temp/
Feels Like
HumidityPressureCloud AmountPrecip AmountWeather
Sun 19
May
16:00

NNE
NNE

11 / 13 mph 61 / 60°F 46% 1018 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 5%
Most Significant Cloud Type: high
5%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

NNE
NNE

9 / 14 mph 58 / 55°F 54% 1018 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 1%
Most Significant Cloud Type: high
0%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

N
N

6 / 14 mph 48 / 46°F 64% 1019 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
Mon 20
May
01:00

NNE
NNE

5 / 11 mph 46 / 43°F 69% 1020 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 6%
Most Significant Cloud Type: high
6%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

NNE
NNE

5 / 11 mph 44 / 41°F 78% 1020 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: medium
2%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

NNE
NNE

5 / 7 mph 50 / 47°F 72% 1021 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: medium
2%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

NE
NE

7 / 8 mph 57 / 55°F 54% 1021 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 12%
Most Significant Cloud Type: high
11%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

NE
NE

5 / 6 mph 62 / 60°F 46% 1021 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 5%
Most Significant Cloud Type: high
5%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

NE
NE

3 / 4 mph 64 / 62°F 43% 1020 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: medium
2%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

SE
SE

2 / 2 mph 64 / 61°F 53% 1020 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 1%
Most Significant Cloud Type: medium
1%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

SSW
SSW

5 / 10 mph 52 / 51°F 59% 1020 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 1%
Most Significant Cloud Type: medium
1%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Tue 21
May
01:00

WSW
WSW

4 / 10 mph 50 / 49°F 61% 1020 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 4%
Most Significant Cloud Type: medium
5%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

W
W

5 / 10 mph 49 / 47°F 68% 1021 mb
Low level cloud: 0%
Mid level cloud: 28%
High level cloud: 1%
Most Significant Cloud Type: medium
28%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

W
W

4 / 8 mph 56 / 54°F 65% 1021 mb
Low level cloud: 0%
Mid level cloud: 33%
High level cloud: 0%
Most Significant Cloud Type: medium
32%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

W
W

6 / 9 mph 63 / 60°F 57% 1021 mb
Low level cloud: 0%
Mid level cloud: 25%
High level cloud: 0%
Most Significant Cloud Type: medium
24%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

WNW
WNW

10 / 13 mph 67 / 65°F 48% 1021 mb
Low level cloud: 0%
Mid level cloud: 23%
High level cloud: 0%
Most Significant Cloud Type: medium
22%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

W
W

9 / 13 mph 68 / 66°F 46% 1021 mb
Low level cloud: 0%
Mid level cloud: 28%
High level cloud: 5%
Most Significant Cloud Type: medium
27%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

W
W

6 / 12 mph 65 / 63°F 60% 1021 mb
Low level cloud: 0%
Mid level cloud: 18%
High level cloud: 6%
Most Significant Cloud Type: medium
18%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

WSW
WSW

6 / 13 mph 57 / 56°F 62% 1021 mb
Low level cloud: 0%
Mid level cloud: 13%
High level cloud: 0%
Most Significant Cloud Type: medium
12%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Wed 22
May
01:00

W
W

6 / 13 mph 53 / 51°F 70% 1021 mb
Low level cloud: 0%
Mid level cloud: 11%
High level cloud: 3%
Most Significant Cloud Type: medium
10%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

W
W

6 / 14 mph 52 / 50°F 75% 1021 mb
Low level cloud: 0%
Mid level cloud: 11%
High level cloud: 2%
Most Significant Cloud Type: medium
11%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

W
W

6 / 11 mph 58 / 56°F 75% 1021 mb
Low level cloud: 0%
Mid level cloud: 13%
High level cloud: 13%
Most Significant Cloud Type: medium
13%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

W
W

9 / 12 mph 67 / 65°F 64% 1021 mb
Low level cloud: 0%
Mid level cloud: 12%
High level cloud: 6%
Most Significant Cloud Type: medium
12%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

W
W

7 / 9 mph 73 / 76°F 47% 1020 mb
Low level cloud: 0%
Mid level cloud: 56%
High level cloud: 6%
Most Significant Cloud Type: medium
55%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

WSW
WSW

4 / 8 mph 70 / 67°F 56% 1019 mb
Low level cloud: 0%
Mid level cloud: 18%
High level cloud: 8%
Most Significant Cloud Type: medium
17%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

WSW
WSW

8 / 16 mph 65 / 63°F 68% 1018 mb
Low level cloud: 0%
Mid level cloud: 20%
High level cloud: 5%
Most Significant Cloud Type: medium
20%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

W
W

5 / 10 mph 60 / 60°F 67% 1018 mb
Low level cloud: 0%
Mid level cloud: 75%
High level cloud: 33%
Most Significant Cloud Type: medium
76%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Thu 23
May
01:00

NNE
NNE

7 / 13 mph 55 / 53°F 94% 1019 mb
Low level cloud: 15%
Mid level cloud: 47%
High level cloud: 35%
Most Significant Cloud Type: medium
89%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
04:00

NNE
NNE

17 / 27 mph 51 / 46°F 93% 1020 mb
Low level cloud: 99%
Mid level cloud: 69%
High level cloud: 1%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
07:00

NE
NE

19 / 26 mph 49 / 42°F 84% 1023 mb
Low level cloud: 76%
Mid level cloud: 44%
High level cloud: 1%
Most Significant Cloud Type: low
91%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

NE
NE

19 / 22 mph 54 / 48°F 60% 1024 mb
Low level cloud: 0%
Mid level cloud: 26%
High level cloud: 6%
Most Significant Cloud Type: medium
26%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

NE
NE

19 / 22 mph 56 / 51°F 45% 1025 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
16:00

NE
NE

18 / 21 mph 56 / 51°F 43% 1026 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
19:00

NE
NE

15 / 20 mph 53 / 48°F 52% 1026 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
22:00

NNE
NNE

11 / 21 mph 45 / 39°F 59% 1028 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
Fri 24
May
01:00

NNE
NNE

8 / 15 mph 42 / 37°F 62% 1029 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 1%
Most Significant Cloud Type: high
0%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

NNE
NNE

6 / 13 mph 40 / 36°F 61% 1030 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 4%
Most Significant Cloud Type: medium
4%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

N
N

5 / 7 mph 46 / 43°F 54% 1030 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 22%
Most Significant Cloud Type: medium
2%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

N
N

8 / 9 mph 54 / 51°F 43% 1030 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 10%
Most Significant Cloud Type: medium
6%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

NNW
NNW

7 / 9 mph 59 / 56°F 41% 1029 mb
Low level cloud: 0%
Mid level cloud: 43%
High level cloud: 56%
Most Significant Cloud Type: medium
45%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

NW
NW

11 / 13 mph 62 / 60°F 43% 1028 mb
Low level cloud: 0%
Mid level cloud: 44%
High level cloud: 11%
Most Significant Cloud Type: medium
44%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

NNW
NNW

11 / 16 mph 59 / 55°F 56% 1028 mb
Low level cloud: 0%
Mid level cloud: 45%
High level cloud: 20%
Most Significant Cloud Type: medium
46%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

NW
NW

6 / 12 mph 50 / 47°F 70% 1029 mb
Low level cloud: 5%
Mid level cloud: 42%
High level cloud: 22%
Most Significant Cloud Type: medium
57%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sat 25
May
01:00

WNW
WNW

6 / 11 mph 51 / 49°F 68% 1029 mb
Low level cloud: 9%
Mid level cloud: 32%
High level cloud: 7%
Most Significant Cloud Type: medium
56%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

NW
NW

5 / 10 mph 49 / 47°F 71% 1029 mb
Low level cloud: 28%
Mid level cloud: 44%
High level cloud: 2%
Most Significant Cloud Type: low
43%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

ENE
ENE

9 / 11 mph 52 / 47°F 76% 1030 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 15%
Most Significant Cloud Type: medium
7%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

ENE
ENE

9 / 10 mph 57 / 53°F 60% 1031 mb
Low level cloud: 4%
Mid level cloud: 7%
High level cloud: 0%
Most Significant Cloud Type: low
6%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

ENE
ENE

8 / 9 mph 61 / 60°F 47% 1032 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: medium
2%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

ENE
ENE

4 / 5 mph 64 / 62°F 44% 1031 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 5%
Most Significant Cloud Type: medium
2%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

SSE
SSE

2 / 2 mph 63 / 60°F 51% 1031 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: medium
1%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

SSW
SSW

4 / 8 mph 53 / 52°F 53% 1031 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
DayLocal TimeDirSpeed/
Gust
Temp/
Feels Like
HumidityPressureCloud AmountPrecip AmountWeather
Sun 26
May
04:00

NW
NW

10 / 15 mph 58 / 56°F 82% 1019 mb
Low level cloud: 43%
Mid level cloud: 35%
High level cloud: 1%
Most Significant Cloud Type: low
55%
0.0 In
10:00

WNW
WNW

7 / 11 mph 56 / 54°F 56% 1030 mb
Low level cloud: 0%
Mid level cloud: 15%
High level cloud: 0%
Most Significant Cloud Type: medium
15%
0.0 In
16:00

WNW
WNW

12 / 17 mph 71 / 71°F 46% 1017 mb
Low level cloud: 0%
Mid level cloud: 32%
High level cloud: 0%
Most Significant Cloud Type: medium
31%
0.0 In
22:00

NW
NW

3 / 6 mph 59 / 59°F 77% 1016 mb
Low level cloud: 0%
Mid level cloud: 30%
High level cloud: 0%
Most Significant Cloud Type: medium
31%
0.0 In
Mon 27
May
04:00

N
N

3 / 6 mph 56 / 56°F 69% 1023 mb
Low level cloud: 0%
Mid level cloud: 31%
High level cloud: 0%
Most Significant Cloud Type: medium
31%
0.0 In
10:00

NNE
NNE

7 / 9 mph 66 / 66°F 64% 1026 mb
Low level cloud: 0%
Mid level cloud: 19%
High level cloud: 0%
Most Significant Cloud Type: medium
19%
0.0 In
16:00

S
S

5 / 7 mph 72 / 76°F 53% 1025 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 / 6 mph 62 / 62°F 66% 1023 mb
Low level cloud: 0%
Mid level cloud: 14%
High level cloud: 0%
Most Significant Cloud Type: medium
13%
0.0 In
Tue 28
May
04:00

N
N

3 / 5 mph 59 / 60°F 68% 1024 mb
Low level cloud: 0%
Mid level cloud: 27%
High level cloud: 3%
Most Significant Cloud Type: medium
26%
0.0 In
10:00

N
N

5 / 11 mph 69 / 69°F 59% 1022 mb
Low level cloud: 0%
Mid level cloud: 7%
High level cloud: 0%
Most Significant Cloud Type: medium
7%
0.0 In
16:00

ENE
ENE

7 / 11 mph 75 / 76°F 42% 1022 mb
Low level cloud: 0%
Mid level cloud: 14%
High level cloud: 10%
Most Significant Cloud Type: medium
14%
0.0 In
22:00

NNE
NNE

7 / 15 mph 59 / 58°F 89% 1021 mb
Low level cloud: 1%
Mid level cloud: 14%
High level cloud: 9%
Most Significant Cloud Type: medium
16%
0.0 In
Wed 29
May
04:00

NE
NE

4 / 8 mph 59 / 59°F 72% 1023 mb
Low level cloud: 0%
Mid level cloud: 21%
High level cloud: 3%
Most Significant Cloud Type: medium
20%
0.0 In
10:00

NE
NE

11 / 21 mph 61 / 61°F 56% 1022 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: medium
2%
0.0 In
16:00

E
E

4 / 6 mph 74 / 76°F 45% 1021 mb
Low level cloud: 0%
Mid level cloud: 20%
High level cloud: 8%
Most Significant Cloud Type: medium
20%
0.0 In
22:00

NE
NE

7 / 14 mph 56 / 54°F 67% 1023 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
Thu 30
May
04:00

ENE
ENE

4 / 9 mph 59 / 59°F 88% 1022 mb
Low level cloud: 0%
Mid level cloud: 47%
High level cloud: 16%
Most Significant Cloud Type: medium
47%
0.0 In
10:00

ENE
ENE

7 / 13 mph 61 / 61°F 57% 1025 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: medium
2%
0.0 In
16:00

S
S

6 / 11 mph 72 / 76°F 56% 1020 mb
Low level cloud: 1%
Mid level cloud: 83%
High level cloud: 100%
Most Significant Cloud Type: medium
88%
0.1 In
22:00

NE
NE

7 / 14 mph 57 / 56°F 65% 1025 mb
Low level cloud: 0%
Mid level cloud: 12%
High level cloud: 0%
Most Significant Cloud Type: medium
12%
0.0 In
Fri 31
May
04:00

ENE
ENE

1 / 2 mph 60 / 60°F 86% 1020 mb
Low level cloud: 0%
Mid level cloud: 62%
High level cloud: 36%
Most Significant Cloud Type: medium
62%
0.1 In
10:00

NE
NE

7 / 14 mph 64 / 64°F 60% 1025 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
16:00

NE
NE

6 / 11 mph 72 / 76°F 58% 1017 mb
Low level cloud: 0%
Mid level cloud: 50%
High level cloud: 32%
Most Significant Cloud Type: medium
50%
0.0 In
22:00

NE
NE

5 / 11 mph 59 / 59°F 67% 1024 mb
Low level cloud: 0%
Mid level cloud: 9%
High level cloud: 0%
Most Significant Cloud Type: medium
8%
0.0 In
Sat 01
Jun
04:00

NNE
NNE

9 / 17 mph 59 / 58°F 96% 1017 mb
Low level cloud: 73%
Mid level cloud: 75%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.1 In
10:00

ENE
ENE

5 / 10 mph 68 / 68°F 57% 1024 mb
Low level cloud: 0%
Mid level cloud: 12%
High level cloud: 7%
Most Significant Cloud Type: medium
12%
0.0 In
16:00

NNE
NNE

17 / 35 mph 64 / 64°F 52% 1021 mb
Low level cloud: 18%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
18%
0.1 In
22:00

E
E

0 / 1 mph 66 / 66°F 58% 1022 mb
Low level cloud: 0%
Mid level cloud: 26%
High level cloud: 0%
Most Significant Cloud Type: medium
26%
0.0 In
Sun 02
Jun
04:00

N
N

7 / 15 mph 48 / 45°F 69% 1026 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
10:00

ESE
ESE

3 / 5 mph 68 / 68°F 65% 1022 mb
Low level cloud: 0%
Mid level cloud: 17%
High level cloud: 0%
Most Significant Cloud Type: medium
17%
0.0 In
16:00

N
N

9 / 18 mph 67 / 67°F 49% 1026 mb
Low level cloud: 5%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: low
6%
0.0 In
22:00

NE
NE

5 / 10 mph 66 / 66°F 61% 1019 mb
Low level cloud: 0%
Mid level cloud: 22%
High level cloud: 0%
Most Significant Cloud Type: medium
21%
0.0 In
Mon 03
Jun
04:00

W
W

5 / 11 mph 52 / 50°F 79% 1025 mb
Low level cloud: 0%
Mid level cloud: 1%
High level cloud: 0%
Most Significant Cloud Type: medium
1%
0.0 In
10:00

NE
NE

4 / 7 mph 68 / 68°F 67% 1016 mb
Low level cloud: 0%
Mid level cloud: 17%
High level cloud: 0%
Most Significant Cloud Type: medium
16%
0.0 In
16:00

WNW
WNW

12 / 24 mph 74 / 77°F 48% 1020 mb
Low level cloud: 0%
Mid level cloud: 46%
High level cloud: 0%
Most Significant Cloud Type: medium
45%
0.0 In
22:00

E
E

7 / 15 mph 62 / 62°F 78% 1010 mb
Low level cloud: 0%
Mid level cloud: 46%
High level cloud: 100%
Most Significant Cloud Type: medium
49%
0.0 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