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Troicko-Pecerskoe 14 Day Long Range Forecast

14 Day weather providing an extended long range forecast outlook for Troicko-Pecerskoe

Russia

Long range weather outlook for Troicko-Pecerskoe includes 14 day forecast summary:

The forecast for Troicko-Pecerskoe in the coming two weeks is predicting the average daytime maximum temperature will be around -13°C, with a high for the two weeks of -5°C expected on the evening of Sunday 4th. The mean minimum temperature will be -20°C, dipping to its lowest on the morning of Tuesday 30th at -29°C. Expect the coming 14 days to have most days seeing a little snow. Predictions are Sunday 4th will have the most precipitation with an accumulation of around 8.0mm. On the whole winds are likely to be light.

DayLocal TimeDirSpeed/
Gust
Temp/
Feels Like
HumidityPressureCloud AmountPrecip AmountWeather
Tue 30
Dec
16:00

SSE
SSE

3 / 6 mph -15 / -23°F 100% 1007 mb
Low level cloud: 100%
Mid level cloud: 28%
High level cloud: 19%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

S
S

3 / 6 mph -10 / -18°F 99% 1007 mb
Low level cloud: 100%
Mid level cloud: 46%
High level cloud: 96%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

SE
SE

2 / 4 mph -14 / -20°F 100% 1007 mb
Low level cloud: 100%
Mid level cloud: 29%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Wed 31
Dec
01:00

SSE
SSE

3 / 5 mph -17 / -25°F 100% 1008 mb
Low level cloud: 100%
Mid level cloud: 25%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

S
S

2 / 5 mph -10 / -16°F 99% 1008 mb
Low level cloud: 100%
Mid level cloud: 43%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

SE
SE

3 / 6 mph -10 / -17°F 100% 1008 mb
Low level cloud: 100%
Mid level cloud: 44%
High level cloud: 64%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

SE
SE

3 / 6 mph -11 / -18°F 100% 1009 mb
Low level cloud: 100%
Mid level cloud: 44%
High level cloud: 21%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

SE
SE

2 / 5 mph -14 / -21°F 100% 1009 mb
Low level cloud: 100%
Mid level cloud: 51%
High level cloud: 95%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

E
E

2 / 4 mph -17 / -24°F 100% 1008 mb
Low level cloud: 98%
Mid level cloud: 28%
High level cloud: 22%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

ESE
ESE

3 / 7 mph -6 / -14°F 99% 1006 mb
Low level cloud: 90%
Mid level cloud: 100%
High level cloud: 18%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

E
E

4 / 9 mph 3 / -6°F 98% 1005 mb
Low level cloud: 74%
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
Thu 01
Jan
01:00

ESE
ESE

5 / 9 mph 8 / -1°F 96% 1003 mb
Low level cloud: 74%
Mid level cloud: 85%
High level cloud: 54%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

ESE
ESE

6 / 10 mph 11 / 1°F 96% 1001 mb
Low level cloud: 72%
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
07:00

ESE
ESE

6 / 10 mph 12 / 2°F 96% 1001 mb
Low level cloud: 68%
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
10:00

SSE
SSE

7 / 11 mph 15 / 5°F 95% 1002 mb
Low level cloud: 100%
Mid level cloud: 100%
High level cloud: 5%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

S
S

8 / 13 mph 12 / 1°F 94% 1003 mb
Low level cloud: 100%
Mid level cloud: 23%
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

SSE
SSE

7 / 12 mph 10 / -2°F 95% 1004 mb
Low level cloud: 100%
Mid level cloud: 64%
High level cloud: 4%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

SSE
SSE

6 / 10 mph 9 / -1°F 96% 1004 mb
Low level cloud: 92%
Mid level cloud: 100%
High level cloud: 5%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

SSE
SSE

7 / 11 mph 10 / -1°F 95% 1004 mb
Low level cloud: 83%
Mid level cloud: 100%
High level cloud: 3%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Fri 02
Jan
01:00

S
S

7 / 11 mph 10 / -1°F 94% 1006 mb
Low level cloud: 100%
Mid level cloud: 100%
High level cloud: 6%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

S
S

8 / 12 mph 8 / -4°F 94% 1007 mb
Low level cloud: 100%
Mid level cloud: 100%
High level cloud: 8%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

SSW
SSW

9 / 13 mph 8 / -5°F 93% 1010 mb
Low level cloud: 100%
Mid level cloud: 100%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

SSW
SSW

9 / 13 mph 8 / -5°F 93% 1013 mb
Low level cloud: 100%
Mid level cloud: 100%
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

SSW
SSW

9 / 13 mph 9 / -4°F 91% 1016 mb
Low level cloud: 100%
Mid level cloud: 100%
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

SSW
SSW

8 / 13 mph 7 / -5°F 91% 1019 mb
Low level cloud: 100%
Mid level cloud: 93%
High level cloud: 17%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

SSW
SSW

8 / 13 mph 4 / -9°F 94% 1022 mb
Low level cloud: 100%
Mid level cloud: 51%
High level cloud: 4%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

S
S

7 / 12 mph 0 / -13°F 96% 1024 mb
Low level cloud: 96%
Mid level cloud: 87%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sat 03
Jan
01:00

S
S

7 / 12 mph -1 / -14°F 96% 1025 mb
Low level cloud: 97%
Mid level cloud: 54%
High level cloud: 7%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

S
S

8 / 13 mph 0 / -14°F 95% 1026 mb
Low level cloud: 100%
Mid level cloud: 26%
High level cloud: 3%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

SSE
SSE

8 / 13 mph -2 / -17°F 97% 1026 mb
Low level cloud: 100%
Mid level cloud: 7%
High level cloud: 19%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

SSE
SSE

9 / 14 mph -3 / -19°F 97% 1026 mb
Low level cloud: 99%
Mid level cloud: 44%
High level cloud: 72%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

SSE
SSE

10 / 15 mph 2 / -14°F 95% 1024 mb
Low level cloud: 81%
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
16:00

SSE
SSE

11 / 17 mph 6 / -9°F 92% 1023 mb
Low level cloud: 85%
Mid level cloud: 98%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

SSE
SSE

12 / 18 mph 10 / -5°F 89% 1020 mb
Low level cloud: 87%
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
22:00

SSE
SSE

13 / 19 mph 12 / -3°F 87% 1018 mb
Low level cloud: 65%
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
Sun 04
Jan
01:00

SSE
SSE

12 / 18 mph 13 / -1°F 94% 1016 mb
Low level cloud: 80%
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
04:00

SSE
SSE

12 / 17 mph 15 / 1°F 94% 1013 mb
Low level cloud: 78%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
07:00

S
S

11 / 17 mph 15 / 2°F 94% 1010 mb
Low level cloud: 80%
Mid level cloud: 94%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
10:00

S
S

11 / 15 mph 15 / 2°F 94% 1008 mb
Low level cloud: 76%
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
13:00

S
S

10 / 14 mph 17 / 5°F 94% 1006 mb
Low level cloud: 77%
Mid level cloud: 70%
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

S
S

9 / 15 mph 19 / 8°F 95% 1005 mb
Low level cloud: 74%
Mid level cloud: 100%
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

SSW
SSW

12 / 18 mph 22 / 10°F 92% 1005 mb
Low level cloud: 92%
Mid level cloud: 86%
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

SW
SW

5 / 7 mph 22 / 16°F 96% 1005 mb
Low level cloud: 79%
Mid level cloud: 100%
High level cloud: 7%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Mon 05
Jan
01:00

SSW
SSW

4 / 7 mph 21 / 15°F 97% 1006 mb
Low level cloud: 73%
Mid level cloud: 100%
High level cloud: 9%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

SW
SW

3 / 5 mph 20 / 15°F 97% 1007 mb
Low level cloud: 70%
Mid level cloud: 100%
High level cloud: 62%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

WSW
WSW

3 / 5 mph 18 / 14°F 97% 1008 mb
Low level cloud: 69%
Mid level cloud: 100%
High level cloud: 78%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

SW
SW

4 / 9 mph 15 / 8°F 97% 1010 mb
Low level cloud: 75%
Mid level cloud: 99%
High level cloud: 9%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

SW
SW

6 / 9 mph 17 / 8°F 95% 1012 mb
Low level cloud: 78%
Mid level cloud: 100%
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

SSW
SSW

6 / 9 mph 15 / 6°F 95% 1014 mb
Low level cloud: 74%
Mid level cloud: 100%
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

SSW
SSW

6 / 9 mph 13 / 4°F 96% 1014 mb
Low level cloud: 73%
Mid level cloud: 72%
High level cloud: 0%
Most Significant Cloud Type: low
97%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

S
S

4 / 8 mph 9 / 2°F 97% 1015 mb
Low level cloud: 94%
Mid level cloud: 100%
High level cloud: 10%
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
Tue 06
Jan
04:00

WNW
WNW

4 / 7 mph -8 / -18°F 99% 1021 mb
Low level cloud: 80%
Mid level cloud: 35%
High level cloud: 0%
Most Significant Cloud Type: low
91%
0.0 In
10:00

SSE
SSE

4 / 8 mph -4 / -14°F 99% 1021 mb
Low level cloud: 100%
Mid level cloud: 46%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.0 In
16:00

ESE
ESE

9 / 14 mph 15 / 4°F 95% 989 mb
Low level cloud: 67%
Mid level cloud: 47%
High level cloud: 8%
Most Significant Cloud Type: low
84%
0.0 In
22:00

W
W

12 / 18 mph 8 / -7°F 86% 1001 mb
Low level cloud: 100%
Mid level cloud: 44%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.0 In
Wed 07
Jan
04:00

SSW
SSW

2 / 4 mph -4 / -10°F 99% 1019 mb
Low level cloud: 95%
Mid level cloud: 100%
High level cloud: 1%
Most Significant Cloud Type: low
100%
0.0 In
10:00

N
N

4 / 8 mph 4 / -5°F 98% 1005 mb
Low level cloud: 74%
Mid level cloud: 100%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.0 In
16:00

SW
SW

8 / 10 mph 6 / -7°F 93% 1014 mb
Low level cloud: 97%
Mid level cloud: 99%
High level cloud: 2%
Most Significant Cloud Type: low
100%
0.0 In
22:00

WSW
WSW

5 / 8 mph 7 / -3°F 95% 1014 mb
Low level cloud: 99%
Mid level cloud: 100%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.0 In
Thu 08
Jan
04:00

SSW
SSW

7 / 13 mph -3 / -17°F 97% 1022 mb
Low level cloud: 100%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.0 In
10:00

W
W

8 / 13 mph 2 / -11°F 93% 1023 mb
Low level cloud: 57%
Mid level cloud: 9%
High level cloud: 0%
Most Significant Cloud Type: low
59%
0.0 In
16:00

SE
SE

3 / 7 mph -20 / -30°F 100% 1027 mb
Low level cloud: 100%
Mid level cloud: 8%
High level cloud: 13%
Most Significant Cloud Type: low
100%
0.0 In
22:00

SSW
SSW

3 / 7 mph -20 / -30°F 100% 1035 mb
Low level cloud: 24%
Mid level cloud: 0%
High level cloud: 100%
Most Significant Cloud Type: low
35%
0.0 In
Fri 09
Jan
04:00

NE
NE

1 / 2 mph -20 / -19°F 100% 1025 mb
Low level cloud: 100%
Mid level cloud: 33%
High level cloud: 32%
Most Significant Cloud Type: low
100%
0.0 In
10:00

ESE
ESE

9 / 15 mph 7 / -6°F 86% 1027 mb
Low level cloud: 0%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: medium
100%
0.0 In
16:00

N
N

7 / 15 mph -4 / -19°F 95% 1018 mb
Low level cloud: 6%
Mid level cloud: 20%
High level cloud: 100%
Most Significant Cloud Type: medium
40%
0.0 In
22:00

SSE
SSE

17 / 27 mph 20 / 6°F 78% 1010 mb
Low level cloud: 48%
Mid level cloud: 99%
High level cloud: 100%
Most Significant Cloud Type: low
94%
0.0 In
Sat 10
Jan
04:00

NNW
NNW

9 / 16 mph -4 / -21°F 94% 1014 mb
Low level cloud: 42%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: low
88%
0.0 In
10:00

SSW
SSW

11 / 18 mph 15 / 2°F 88% 1015 mb
Low level cloud: 100%
Mid level cloud: 7%
High level cloud: 4%
Most Significant Cloud Type: low
100%
0.1 In
16:00

WNW
WNW

4 / 9 mph -18 / -30°F 99% 1016 mb
Low level cloud: 97%
Mid level cloud: 70%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.0 In
22:00

S
S

4 / 8 mph -8 / -18°F 100% 1027 mb
Low level cloud: 67%
Mid level cloud: 16%
High level cloud: 37%
Most Significant Cloud Type: low
77%
0.0 In
Sun 11
Jan
04:00

SSW
SSW

4 / 7 mph -7 / -16°F 99% 1016 mb
Low level cloud: 99%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.0 In
10:00

NE
NE

1 / 2 mph -3 / -3°F 98% 1024 mb
Low level cloud: 7%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: medium
100%
0.0 In
16:00

S
S

8 / 12 mph -2 / -16°F 95% 1016 mb
Low level cloud: 77%
Mid level cloud: 100%
High level cloud: 56%
Most Significant Cloud Type: low
100%
0.0 In
22:00

ESE
ESE

1 / 2 mph 16 / 16°F 97% 1021 mb
Low level cloud: 61%
Mid level cloud: 46%
High level cloud: 100%
Most Significant Cloud Type: low
88%
0.0 In
Mon 12
Jan
04:00

SSE
SSE

6 / 11 mph -12 / -26°F 99% 1016 mb
Low level cloud: 100%
Mid level cloud: 13%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.0 In
10:00

SSE
SSE

3 / 7 mph 5 / -2°F 99% 1022 mb
Low level cloud: 99%
Mid level cloud: 45%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.0 In
16:00

SE
SE

6 / 10 mph 1 / -12°F 96% 1011 mb
Low level cloud: 100%
Mid level cloud: 100%
High level cloud: 92%
Most Significant Cloud Type: low
100%
0.0 In
22:00

SE
SE

5 / 10 mph 13 / 4°F 97% 1020 mb
Low level cloud: 83%
Mid level cloud: 100%
High level cloud: 11%
Most Significant Cloud Type: low
100%
0.0 In
Tue 13
Jan
04:00

SE
SE

6 / 9 mph 7 / -3°F 96% 1007 mb
Low level cloud: 92%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.0 In
10:00

SE
SE

9 / 14 mph 19 / 8°F 94% 1015 mb
Low level cloud: 95%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.0 In
16:00

ESE
ESE

3 / 6 mph 7 / 0°F 98% 1006 mb
Low level cloud: 83%
Mid level cloud: 98%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.0 In
22:00

SSE
SSE

9 / 14 mph 24 / 14°F 96% 1007 mb
Low level cloud: 77%
Mid level cloud: 63%
High level cloud: 0%
Most Significant Cloud Type: low
98%
0.2 In
Wed 14
Jan
04:00

SE
SE

2 / 4 mph -2 / -2°F 98% 1010 mb
Low level cloud: 95%
Mid level cloud: 100%
High level cloud: 4%
Most Significant Cloud Type: low
100%
0.0 In
10:00

S
S

9 / 19 mph 20 / 10°F 95% 1005 mb
Low level cloud: 83%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.1 In
16:00

S
S

4 / 4 mph 5 / -2°F 100% 1014 mb
Low level cloud: 100%
Mid level cloud: 84%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.0 In
22:00

S
S

7 / 8 mph 19 / 10°F 95% 1010 mb
Low level cloud: 86%
Mid level cloud: 74%
High level cloud: 0%
Most Significant Cloud Type: low
100%
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