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Bolon 14 Day Long Range Forecast

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

Russia

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

The forecast for Bolon in the coming two weeks is predicting the average daytime maximum temperature will be around -11°C, with a high for the two weeks of -7°C expected on the afternoon of Friday 7th. The average minimum temperature will be -19°C, dipping to its lowest on the morning of Friday 14th at -24°C. Expect the following 14 days ahead to have mostly dry days although Wednesday is likely to see a little snow. Predictions are Wednesday 5th will have the most precipitation with an accumulation of around 1.0mm. On the whole winds are likely to be light.

DayLocal TimeDirSpeed/
Gust
Temp/
Feels Like
HumidityPressureCloud AmountPrecip AmountWeather
Wed 05
Feb
17:00

N
N

14 / 20 mph 12 / -3°F 69% 1005 mb
Low level cloud: 17%
Mid level cloud: 100%
High level cloud: 99%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
20:00

N
N

13 / 22 mph 10 / -6°F 67% 1005 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
23:00

NNW
NNW

13 / 26 mph 8 / -8°F 67% 1004 mb
Low level cloud: 0%
Mid level cloud: 68%
High level cloud: 100%
Most Significant Cloud Type: medium
72%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Thu 06
Feb
02:00

N
N

15 / 24 mph 11 / -5°F 64% 1003 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
05:00

NNW
NNW

15 / 26 mph 10 / -7°F 64% 1003 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
08:00

NNW
NNW

13 / 19 mph 12 / -3°F 66% 1004 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
11:00

N
N

12 / 15 mph 15 / 2°F 66% 1005 mb
Low level cloud: 0%
Mid level cloud: 47%
High level cloud: 4%
Most Significant Cloud Type: medium
46%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
14:00

N
N

13 / 16 mph 18 / 5°F 67% 1005 mb
Low level cloud: 4%
Mid level cloud: 85%
High level cloud: 0%
Most Significant Cloud Type: medium
94%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
17:00

NNW
NNW

12 / 16 mph 17 / 4°F 69% 1006 mb
Low level cloud: 10%
Mid level cloud: 93%
High level cloud: 0%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
20:00

N
N

11 / 19 mph 15 / 2°F 67% 1007 mb
Low level cloud: 14%
Mid level cloud: 99%
High level cloud: 0%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
23:00

NNW
NNW

11 / 24 mph 13 / -1°F 67% 1007 mb
Low level cloud: 8%
Mid level cloud: 100%
High level cloud: 56%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Fri 07
Feb
02:00

NNW
NNW

12 / 19 mph 16 / 2°F 67% 1008 mb
Low level cloud: 19%
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
05:00

N
N

13 / 22 mph 17 / 4°F 64% 1007 mb
Low level cloud: 18%
Mid level cloud: 78%
High level cloud: 100%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
08:00

N
N

15 / 25 mph 17 / 3°F 63% 1008 mb
Low level cloud: 8%
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
11:00

N
N

15 / 22 mph 18 / 3°F 64% 1010 mb
Low level cloud: 0%
Mid level cloud: 100%
High level cloud: 95%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
14:00

N
N

14 / 17 mph 19 / 5°F 65% 1011 mb
Low level cloud: 0%
Mid level cloud: 82%
High level cloud: 32%
Most Significant Cloud Type: medium
82%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
17:00

N
N

13 / 17 mph 18 / 5°F 64% 1012 mb
Low level cloud: 0%
Mid level cloud: 40%
High level cloud: 22%
Most Significant Cloud Type: medium
40%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
20:00

N
N

11 / 17 mph 12 / -1°F 68% 1014 mb
Low level cloud: 0%
Mid level cloud: 100%
High level cloud: 44%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
23:00

N
N

10 / 16 mph 12 / -1°F 68% 1015 mb
Low level cloud: 0%
Mid level cloud: 68%
High level cloud: 31%
Most Significant Cloud Type: medium
68%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sat 08
Feb
02:00

N
N

8 / 16 mph 7 / -5°F 73% 1016 mb
Low level cloud: 0%
Mid level cloud: 30%
High level cloud: 93%
Most Significant Cloud Type: medium
33%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
05:00

N
N

7 / 13 mph 7 / -4°F 67% 1016 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
08:00

N
N

5 / 11 mph 4 / -6°F 72% 1016 mb
Low level cloud: 0%
Mid level cloud: 97%
High level cloud: 100%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
11:00

NNW
NNW

3 / 6 mph 8 / 2°F 70% 1016 mb
Low level cloud: 0%
Mid level cloud: 44%
High level cloud: 100%
Most Significant Cloud Type: medium
47%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
14:00

N
N

8 / 9 mph 18 / 7°F 49% 1016 mb
Low level cloud: 0%
Mid level cloud: 92%
High level cloud: 100%
Most Significant Cloud Type: medium
96%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
17:00

NNW
NNW

7 / 9 mph 17 / 8°F 59% 1015 mb
Low level cloud: 0%
Mid level cloud: 98%
High level cloud: 99%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
20:00

NNW
NNW

4 / 9 mph 3 / -6°F 84% 1016 mb
Low level cloud: 0%
Mid level cloud: 32%
High level cloud: 16%
Most Significant Cloud Type: medium
32%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
23:00

NNW
NNW

4 / 9 mph -4 / -14°F 86% 1016 mb
Low level cloud: 0%
Mid level cloud: 96%
High level cloud: 16%
Most Significant Cloud Type: medium
96%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sun 09
Feb
02:00

NNW
NNW

2 / 5 mph -1 / -7°F 85% 1015 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
05:00

WSW
WSW

2 / 3 mph 0 / 0°F 87% 1015 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
08:00

SSW
SSW

1 / 2 mph -2 / -2°F 92% 1015 mb
Low level cloud: 0%
Mid level cloud: 100%
High level cloud: 91%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
11:00

S
S

2 / 3 mph 5 / 1°F 79% 1014 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
14:00

S
S

4 / 5 mph 12 / 4°F 74% 1013 mb
Low level cloud: 0%
Mid level cloud: 70%
High level cloud: 84%
Most Significant Cloud Type: medium
73%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
17:00

SSW
SSW

5 / 6 mph 13 / 5°F 79% 1011 mb
Low level cloud: 0%
Mid level cloud: 59%
High level cloud: 20%
Most Significant Cloud Type: medium
59%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
20:00

W
W

1 / 3 mph -3 / -3°F 99% 1011 mb
Low level cloud: 37%
Mid level cloud: 24%
High level cloud: 37%
Most Significant Cloud Type: low
50%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
23:00

SSW
SSW

0 / 1 mph -4 / -4°F 99% 1010 mb
Low level cloud: 86%
Mid level cloud: 63%
High level cloud: 92%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Mon 10
Feb
02:00

S
S

2 / 3 mph -3 / -3°F 99% 1009 mb
Low level cloud: 85%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
05:00

SSE
SSE

2 / 4 mph -1 / -6°F 98% 1009 mb
Low level cloud: 86%
Mid level cloud: 100%
High level cloud: 37%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
08:00

S
S

3 / 4 mph 1 / -5°F 95% 1010 mb
Low level cloud: 64%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
11:00

S
S

3 / 4 mph 4 / -3°F 90% 1011 mb
Low level cloud: 46%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: low
92%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
14:00

SSW
SSW

5 / 6 mph 9 / 0°F 84% 1012 mb
Low level cloud: 56%
Mid level cloud: 81%
High level cloud: 74%
Most Significant Cloud Type: low
92%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
17:00

SSW
SSW

6 / 7 mph 9 / -1°F 87% 1012 mb
Low level cloud: 60%
Mid level cloud: 72%
High level cloud: 100%
Most Significant Cloud Type: low
97%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
20:00

SW
SW

2 / 5 mph 1 / -5°F 98% 1014 mb
Low level cloud: 62%
Mid level cloud: 99%
High level cloud: 33%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
23:00

W
W

1 / 2 mph -6 / -7°F 99% 1015 mb
Low level cloud: 70%
Mid level cloud: 64%
High level cloud: 32%
Most Significant Cloud Type: low
96%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Tue 11
Feb
02:00

W
W

1 / 2 mph -9 / -9°F 99% 1016 mb
Low level cloud: 77%
Mid level cloud: 62%
High level cloud: 24%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
05:00

WSW
WSW

1 / 3 mph -8 / -8°F 99% 1017 mb
Low level cloud: 80%
Mid level cloud: 65%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
08:00

SW
SW

2 / 4 mph -6 / -6°F 99% 1017 mb
Low level cloud: 79%
Mid level cloud: 96%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
11:00

SSW
SSW

2 / 4 mph 1 / -5°F 93% 1018 mb
Low level cloud: 75%
Mid level cloud: 100%
High level cloud: 77%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
14:00

SSW
SSW

4 / 5 mph 9 / 1°F 87% 1018 mb
Low level cloud: 36%
Mid level cloud: 95%
High level cloud: 100%
Most Significant Cloud Type: low
81%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
17:00

SSW
SSW

5 / 6 mph 10 / 2°F 87% 1018 mb
Low level cloud: 58%
Mid level cloud: 56%
High level cloud: 100%
Most Significant Cloud Type: low
89%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
20:00

SSW
SSW

3 / 5 mph 5 / -1°F 97% 1020 mb
Low level cloud: 71%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
23:00

SW
SW

2 / 4 mph 0 / -4°F 99% 1020 mb
Low level cloud: 99%
Mid level cloud: 48%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
DayLocal TimeDirSpeed/
Gust
Temp/
Feels Like
HumidityPressureCloud AmountPrecip AmountWeather
Wed 12
Feb
05:00

NNW
NNW

1 / 3 mph -14 / -14°F 99% 1005 mb
Low level cloud: 96%
Mid level cloud: 43%
High level cloud: 13%
Most Significant Cloud Type: low
100%
0.0 In
11:00

SE
SE

1 / 2 mph -6 / -7°F 96% 1000 mb
Low level cloud: 100%
Mid level cloud: 31%
High level cloud: 88%
Most Significant Cloud Type: low
100%
0.0 In
17:00

SSW
SSW

4 / 5 mph 4 / -5°F 85% 1001 mb
Low level cloud: 94%
Mid level cloud: 30%
High level cloud: 5%
Most Significant Cloud Type: low
100%
0.0 In
23:00

SSW
SSW

1 / 2 mph -2 / -2°F 96% 1001 mb
Low level cloud: 75%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.0 In
Thu 13
Feb
05:00

ESE
ESE

1 / 2 mph -12 / -12°F 100% 1002 mb
Low level cloud: 100%
Mid level cloud: 58%
High level cloud: 17%
Most Significant Cloud Type: low
100%
0.0 In
11:00

SSE
SSE

1 / 1 mph 4 / 4°F 91% 1011 mb
Low level cloud: 94%
Mid level cloud: 100%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.0 In
17:00

SE
SE

2 / 3 mph 12 / 7°F 81% 1007 mb
Low level cloud: 90%
Mid level cloud: 100%
High level cloud: 87%
Most Significant Cloud Type: low
100%
0.0 In
23:00

NNW
NNW

1 / 3 mph 3 / 3°F 98% 1010 mb
Low level cloud: 78%
Mid level cloud: 100%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.0 In
Fri 14
Feb
05:00

NNW
NNW

2 / 4 mph -10 / -16°F 98% 1010 mb
Low level cloud: 51%
Mid level cloud: 0%
High level cloud: 9%
Most Significant Cloud Type: low
52%
0.0 In
11:00

NE
NE

1 / 2 mph 8 / 8°F 91% 1014 mb
Low level cloud: 95%
Mid level cloud: 98%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.0 In
17:00

SW
SW

6 / 7 mph 10 / 1°F 86% 1012 mb
Low level cloud: 97%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
97%
0.0 In
23:00

WNW
WNW

2 / 4 mph -5 / -5°F 99% 1018 mb
Low level cloud: 100%
Mid level cloud: 8%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.0 In
Sat 15
Feb
05:00

S
S

0 / 1 mph -8 / -8°F 100% 1013 mb
Low level cloud: 100%
Mid level cloud: 69%
High level cloud: 9%
Most Significant Cloud Type: low
100%
0.0 In
11:00

SSE
SSE

2 / 3 mph 0 / -5°F 95% 1023 mb
Low level cloud: 100%
Mid level cloud: 10%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.0 In
17:00

SSW
SSW

3 / 4 mph 11 / 5°F 84% 1009 mb
Low level cloud: 90%
Mid level cloud: 46%
High level cloud: 15%
Most Significant Cloud Type: low
100%
0.0 In
23:00

NNW
NNW

2 / 4 mph -7 / -7°F 99% 1022 mb
Low level cloud: 100%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
99%
0.0 In
Sun 16
Feb
05:00

NNE
NNE

4 / 10 mph 5 / -4°F 91% 1003 mb
Low level cloud: 0%
Mid level cloud: 100%
High level cloud: 10%
Most Significant Cloud Type: medium
100%
0.0 In
11:00

SSE
SSE

1 / 2 mph 1 / 1°F 93% 1019 mb
Low level cloud: 100%
Mid level cloud: 4%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.0 In
17:00

N
N

7 / 9 mph 19 / 10°F 69% 1001 mb
Low level cloud: 11%
Mid level cloud: 73%
High level cloud: 9%
Most Significant Cloud Type: medium
100%
0.0 In
23:00

NNW
NNW

2 / 4 mph -3 / -7°F 97% 1014 mb
Low level cloud: 42%
Mid level cloud: 100%
High level cloud: 0%
Most Significant Cloud Type: low
77%
0.0 In
Mon 17
Feb
05:00

NNW
NNW

2 / 4 mph -2 / -7°F 93% 1003 mb
Low level cloud: 0%
Mid level cloud: 62%
High level cloud: 66%
Most Significant Cloud Type: medium
64%
0.0 In
11:00

SE
SE

2 / 3 mph 5 / 1°F 92% 1014 mb
Low level cloud: 99%
Mid level cloud: 100%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.0 In
17:00

SSW
SSW

6 / 7 mph 17 / 9°F 81% 1004 mb
Low level cloud: 31%
Mid level cloud: 44%
High level cloud: 13%
Most Significant Cloud Type: low
47%
0.0 In
23:00

WNW
WNW

2 / 3 mph -5 / -5°F 99% 1014 mb
Low level cloud: 55%
Mid level cloud: 87%
High level cloud: 0%
Most Significant Cloud Type: low
85%
0.0 In
Tue 18
Feb
05:00

WSW
WSW

1 / 2 mph -6 / -6°F 99% 1008 mb
Low level cloud: 69%
Mid level cloud: 52%
High level cloud: 0%
Most Significant Cloud Type: low
87%
0.0 In
11:00

SSW
SSW

4 / 5 mph 0 / -9°F 91% 1017 mb
Low level cloud: 52%
Mid level cloud: 80%
High level cloud: 33%
Most Significant Cloud Type: low
84%
0.0 In
17:00

SSW
SSW

6 / 6 mph 16 / 7°F 85% 1010 mb
Low level cloud: 59%
Mid level cloud: 100%
High level cloud: 15%
Most Significant Cloud Type: low
95%
0.0 In
23:00

NNE
NNE

2 / 4 mph -6 / -6°F 99% 1018 mb
Low level cloud: 96%
Mid level cloud: 23%
High level cloud: 24%
Most Significant Cloud Type: low
100%
0.0 In
Wed 19
Feb
05:00

NW
NW

2 / 3 mph -3 / -3°F 97% 1014 mb
Low level cloud: 5%
Mid level cloud: 93%
High level cloud: 0%
Most Significant Cloud Type: medium
100%
0.0 In
11:00

SE
SE

2 / 3 mph 0 / -5°F 93% 1018 mb
Low level cloud: 96%
Mid level cloud: 91%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.0 In
17:00

SSW
SSW

5 / 6 mph 19 / 13°F 83% 1014 mb
Low level cloud: 40%
Mid level cloud: 84%
High level cloud: 100%
Most Significant Cloud Type: low
81%
0.0 In
23:00

W
W

2 / 4 mph 2 / -1°F 98% 1020 mb
Low level cloud: 100%
Mid level cloud: 100%
High level cloud: 12%
Most Significant Cloud Type: low
100%
0.0 In
Thu 20
Feb
05:00

N
N

2 / 4 mph -1 / -5°F 96% 1016 mb
Low level cloud: 35%
Mid level cloud: 72%
High level cloud: 32%
Most Significant Cloud Type: low
64%
0.0 In
11:00

S
S

2 / 2 mph 8 / 4°F 89% 1023 mb
Low level cloud: 72%
Mid level cloud: 100%
High level cloud: 36%
Most Significant Cloud Type: low
100%
0.0 In
17:00

S
S

5 / 6 mph 15 / 6°F 83% 1016 mb
Low level cloud: 94%
Mid level cloud: 45%
High level cloud: 10%
Most Significant Cloud Type: low
100%
0.0 In
23:00

NNW
NNW

2 / 4 mph -5 / -5°F 99% 1024 mb
Low level cloud: 83%
Mid level cloud: 33%
High level cloud: 0%
Most Significant Cloud Type: low
94%
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