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Tjanja 14 Day Long Range Forecast

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

Russia

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

Taking a look at Tjanja over the coming two weeks and the average daytime maximum temperature will be around -6°C, with a high for the two weeks of 2°C expected on the afternoon of Friday 20th. The average minimum temperature will be -21°C, dipping to its lowest on the morning of Saturday 14th at -38°C. Expect the coming 14 days to have some days seeing a little precipitation and some days with snow. The current forecast indicates Thursday 12th will have the most precipitation with an accumulation of around 11.0mm. On the whole winds are likely to be light.

DayLocal TimeDirSpeed/
Gust		Temp/
Feels Like		HumidityPressureCloud AmountPrecip AmountWeather
Wed 11
Mar		16:00

SSW
SSW

 3 / 3 mph 33 / 30°F 86% 1010 mb
Low level cloud: 2%
Mid level cloud: 44%
High level cloud: 28%
Most Significant Cloud Type: medium
49%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

NW
NW

 2 / 4 mph 26 / 26°F 95% 1013 mb
Low level cloud: 15%
Mid level cloud: 43%
High level cloud: 95%
Most Significant Cloud Type: low
41%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

E
E

 1 / 2 mph 19 / 19°F 97% 1014 mb
Low level cloud: 38%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: low
84%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Thu 12
Mar		01:00

NNE
NNE

 3 / 5 mph 25 / 22°F 98% 1011 mb
Low level cloud: 75%
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
04:00

NE
NE

 3 / 5 mph 27 / 23°F 98% 1009 mb
Low level cloud: 74%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.2 In of precipitation over the past 3 hours.
0.2 In
07:00

S
S

 2 / 3 mph 26 / 23°F 98% 1010 mb
Low level cloud: 71%
Mid level cloud: 100%
High level cloud: 33%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
10:00

WNW
WNW

 6 / 6 mph 28 / 22°F 97% 1014 mb
Low level cloud: 74%
Mid level cloud: 100%
High level cloud: 91%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

WNW
WNW

 18 / 21 mph 19 / 4°F 81% 1024 mb
Low level cloud: 74%
Mid level cloud: 100%
High level cloud: 53%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
16:00

WNW
WNW

 14 / 16 mph 19 / 5°F 79% 1029 mb
Low level cloud: 81%
Mid level cloud: 19%
High level cloud: 15%
Most Significant Cloud Type: low
89%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

WNW
WNW

 10 / 11 mph 13 / 0°F 81% 1033 mb
Low level cloud: 95%
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

WNW
WNW

 9 / 11 mph 8 / -5°F 83% 1036 mb
Low level cloud: 92%
Mid level cloud: 100%
High level cloud: 16%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Fri 13
Mar		01:00

WNW
WNW

 5 / 8 mph 4 / -7°F 86% 1039 mb
Low level cloud: 34%
Mid level cloud: 92%
High level cloud: 0%
Most Significant Cloud Type: low
65%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

WNW
WNW

 4 / 8 mph -7 / -17°F 92% 1041 mb
Low level cloud: 82%
Mid level cloud: 44%
High level cloud: 0%
Most Significant Cloud Type: low
97%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

W
W

 2 / 5 mph -12 / -18°F 95% 1042 mb
Low level cloud: 60%
Mid level cloud: 100%
High level cloud: 15%
Most Significant Cloud Type: low
96%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

WNW
WNW

 2 / 2 mph -3 / -3°F 90% 1041 mb
Low level cloud: 47%
Mid level cloud: 100%
High level cloud: 4%
Most Significant Cloud Type: low
82%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

NW
NW

 4 / 4 mph 6 / -2°F 78% 1040 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

NW
NW

 3 / 4 mph 8 / 2°F 73% 1038 mb
Low level cloud: 100%
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
19:00

E
E

 1 / 1 mph 5 / 5°F 89% 1037 mb
Low level cloud: 100%
Mid level cloud: 8%
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

SSE
SSE

 2 / 5 mph -18 / -25°F 99% 1039 mb
Low level cloud: 88%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: low
88%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sat 14
Mar		01:00

SE
SE

 3 / 6 mph -26 / -35°F 100% 1039 mb
Low level cloud: 29%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: low
29%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

SE
SE

 3 / 7 mph -31 / -43°F 100% 1038 mb
Low level cloud: 83%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: low
84%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

SSE
SSE

 4 / 7 mph -34 / -47°F 100% 1038 mb
Low level cloud: 36%
Mid level cloud: 1%
High level cloud: 0%
Most Significant Cloud Type: low
36%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

SE
SE

 4 / 7 mph -19 / -30°F 98% 1034 mb
Low level cloud: 30%
Mid level cloud: 2%
High level cloud: 1%
Most Significant Cloud Type: low
30%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

SE
SE

 5 / 6 mph 4 / -6°F 82% 1029 mb
Low level cloud: 15%
Mid level cloud: 6%
High level cloud: 6%
Most Significant Cloud Type: low
17%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

SE
SE

 9 / 10 mph 16 / 4°F 74% 1023 mb
Low level cloud: 15%
Mid level cloud: 21%
High level cloud: 12%
Most Significant Cloud Type: low
24%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

ESE
ESE

 8 / 11 mph 13 / 2°F 82% 1021 mb
Low level cloud: 0%
Mid level cloud: 21%
High level cloud: 2%
Most Significant Cloud Type: medium
20%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

ESE
ESE

 3 / 6 mph 0 / -6°F 96% 1021 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
Sun 15
Mar		01:00

SSE
SSE

 3 / 6 mph 0 / -6°F 97% 1020 mb
Low level cloud: 59%
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

SSW
SSW

 2 / 5 mph 1 / -4°F 98% 1021 mb
Low level cloud: 97%
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

NW
NW

 13 / 15 mph 12 / -3°F 92% 1024 mb
Low level cloud: 100%
Mid level cloud: 100%
High level cloud: 72%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

NW
NW

 10 / 11 mph 7 / -7°F 86% 1028 mb
Low level cloud: 84%
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

WNW
WNW

 7 / 8 mph 8 / -3°F 77% 1029 mb
Low level cloud: 99%
Mid level cloud: 100%
High level cloud: 32%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

W
W

 5 / 6 mph 11 / 2°F 72% 1028 mb
Low level cloud: 100%
Mid level cloud: 48%
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

ESE
ESE

 2 / 2 mph 8 / 5°F 89% 1026 mb
Low level cloud: 97%
Mid level cloud: 13%
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

ESE
ESE

 4 / 8 mph -15 / -26°F 100% 1026 mb
Low level cloud: 4%
Mid level cloud: 2%
High level cloud: 5%
Most Significant Cloud Type: low
5%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Mon 16
Mar		01:00

ESE
ESE

 4 / 8 mph -21 / -34°F 100% 1023 mb
Low level cloud: 30%
Mid level cloud: 15%
High level cloud: 17%
Most Significant Cloud Type: low
37%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

SE
SE

 3 / 7 mph -26 / -38°F 100% 1021 mb
Low level cloud: 62%
Mid level cloud: 19%
High level cloud: 17%
Most Significant Cloud Type: low
70%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

SE
SE

 3 / 6 mph -29 / -40°F 100% 1019 mb
Low level cloud: 84%
Mid level cloud: 44%
High level cloud: 39%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

ESE
ESE

 3 / 5 mph -13 / -21°F 97% 1015 mb
Low level cloud: 86%
Mid level cloud: 47%
High level cloud: 87%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

SE
SE

 0 / 0 mph 5 / 5°F 86% 1014 mb
Low level cloud: 90%
Mid level cloud: 100%
High level cloud: 99%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

WNW
WNW

 2 / 2 mph 12 / 8°F 81% 1014 mb
Low level cloud: 100%
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
19:00

WNW
WNW

 6 / 7 mph 11 / 0°F 89% 1015 mb
Low level cloud: 63%
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

WSW
WSW

 3 / 5 mph 1 / -5°F 98% 1017 mb
Low level cloud: 98%
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
Tue 17
Mar		01:00

WNW
WNW

 8 / 9 mph 10 / -2°F 95% 1017 mb
Low level cloud: 100%
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

WNW
WNW

 9 / 11 mph 9 / -4°F 93% 1019 mb
Low level cloud: 100%
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

WNW
WNW

 9 / 11 mph 8 / -5°F 94% 1021 mb
Low level cloud: 100%
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

WNW
WNW

 10 / 11 mph 10 / -3°F 93% 1023 mb
Low level cloud: 100%
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

NW
NW

 12 / 13 mph 13 / -1°F 86% 1024 mb
Low level cloud: 100%
Mid level cloud: 97%
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

NW
NW

 11 / 13 mph 15 / 1°F 87% 1025 mb
Low level cloud: 100%
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
19:00

NW
NW

 10 / 11 mph 12 / -1°F 88% 1027 mb
Low level cloud: 100%
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

WNW
WNW

 8 / 10 mph 9 / -4°F 92% 1029 mb
Low level cloud: 100%
Mid level cloud: 100%
High level cloud: 98%
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 18
Mar		04:00

SSE
SSE

 3 / 7 mph -4 / -12°F 96% 1011 mb
Low level cloud: 77%
Mid level cloud: 100%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.0 In
10:00

S
S

 5 / 9 mph -3 / -13°F 98% 1027 mb
Low level cloud: 55%
Mid level cloud: 3%
High level cloud: 5%
Most Significant Cloud Type: low
56%
0.0 In
16:00

SW
SW

 9 / 11 mph 23 / 13°F 80% 1010 mb
Low level cloud: 98%
Mid level cloud: 100%
High level cloud: 83%
Most Significant Cloud Type: low
100%
0.0 In
22:00

WSW
WSW

 8 / 11 mph 20 / 10°F 95% 1017 mb
Low level cloud: 66%
Mid level cloud: 100%
High level cloud: 22%
Most Significant Cloud Type: low
100%
0.0 In
Thu 19
Mar		04:00

SW
SW

 6 / 8 mph 15 / 6°F 94% 1024 mb
Low level cloud: 75%
Mid level cloud: 100%
High level cloud: 16%
Most Significant Cloud Type: low
100%
0.0 In
10:00

N
N

 2 / 2 mph 4 / 4°F 85% 1015 mb
Low level cloud: 0%
Mid level cloud: 28%
High level cloud: 97%
Most Significant Cloud Type: medium
31%
0.0 In
16:00

SW
SW

 5 / 6 mph 28 / 22°F 80% 1026 mb
Low level cloud: 47%
Mid level cloud: 46%
High level cloud: 99%
Most Significant Cloud Type: low
75%
0.0 In
22:00

W
W

 8 / 12 mph 28 / 19°F 83% 1020 mb
Low level cloud: 46%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: low
92%
0.0 In
Fri 20
Mar		04:00

S
S

 3 / 7 mph 8 / 1°F 93% 1024 mb
Low level cloud: 64%
Mid level cloud: 100%
High level cloud: 92%
Most Significant Cloud Type: low
100%
0.0 In
10:00

SW
SW

 3 / 5 mph 25 / 20°F 89% 1020 mb
Low level cloud: 55%
Mid level cloud: 100%
High level cloud: 99%
Most Significant Cloud Type: low
100%
0.0 In
16:00

W
W

 4 / 5 mph 34 / 30°F 87% 1018 mb
Low level cloud: 100%
Mid level cloud: 58%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.0 In
22:00

W
W

 9 / 12 mph 31 / 24°F 89% 1019 mb
Low level cloud: 53%
Mid level cloud: 63%
High level cloud: 100%
Most Significant Cloud Type: low
86%
0.0 In
Sat 21
Mar		04:00

S
S

 4 / 7 mph 12 / 6°F 97% 1017 mb
Low level cloud: 1%
Mid level cloud: 46%
High level cloud: 100%
Most Significant Cloud Type: medium
51%
0.0 In
10:00

WSW
WSW

 10 / 13 mph 29 / 20°F 92% 1019 mb
Low level cloud: 75%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.0 In
16:00

WSW
WSW

 9 / 12 mph 35 / 28°F 88% 1007 mb
Low level cloud: 14%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: medium
100%
0.0 In
22:00

WSW
WSW

 5 / 8 mph 27 / 22°F 89% 1013 mb
Low level cloud: 13%
Mid level cloud: 90%
High level cloud: 100%
Most Significant Cloud Type: medium
100%
0.0 In
Sun 22
Mar		04:00

WNW
WNW

 2 / 5 mph 15 / 12°F 95% 1009 mb
Low level cloud: 42%
Mid level cloud: 63%
High level cloud: 21%
Most Significant Cloud Type: low
66%
0.0 In
10:00

NNW
NNW

 7 / 11 mph 25 / 17°F 94% 1009 mb
Low level cloud: 69%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.0 In
16:00

NNW
NNW

 6 / 8 mph 24 / 16°F 77% 1011 mb
Low level cloud: 100%
Mid level cloud: 43%
High level cloud: 15%
Most Significant Cloud Type: low
100%
0.0 In
22:00

NW
NW

 3 / 5 mph -3 / -9°F 99% 1018 mb
Low level cloud: 74%
Mid level cloud: 24%
High level cloud: 0%
Most Significant Cloud Type: low
82%
0.0 In
Mon 23
Mar		04:00

WNW
WNW

 2 / 4 mph -7 / -7°F 100% 1020 mb
Low level cloud: 78%
Mid level cloud: 22%
High level cloud: 21%
Most Significant Cloud Type: low
88%
0.0 In
10:00

SE
SE

 3 / 5 mph 4 / -3°F 96% 1016 mb
Low level cloud: 96%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.0 In
16:00

NW
NW

 5 / 7 mph 21 / 14°F 80% 1025 mb
Low level cloud: 100%
Mid level cloud: 11%
High level cloud: 93%
Most Significant Cloud Type: low
100%
0.0 In
22:00

SSE
SSE

 3 / 6 mph 19 / 15°F 98% 1005 mb
Low level cloud: 68%
Mid level cloud: 92%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.0 In
Tue 24
Mar		04:00

SW
SW

 3 / 6 mph 0 / -6°F 99% 1034 mb
Low level cloud: 100%
Mid level cloud: 46%
High level cloud: 20%
Most Significant Cloud Type: low
100%
0.0 In
10:00

NNW
NNW

 4 / 6 mph 20 / 14°F 79% 1013 mb
Low level cloud: 12%
Mid level cloud: 46%
High level cloud: 32%
Most Significant Cloud Type: medium
79%
0.1 In
16:00

NNW
NNW

 4 / 6 mph 25 / 19°F 81% 1034 mb
Low level cloud: 100%
Mid level cloud: 21%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.0 In
22:00

SE
SE

 2 / 3 mph 11 / 11°F 96% 1014 mb
Low level cloud: 67%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.0 In
Wed 25
Mar		04:00

SSW
SSW

 1 / 2 mph -5 / -5°F 100% 1036 mb
Low level cloud: 100%
Mid level cloud: 2%
High level cloud: 4%
Most Significant Cloud Type: low
100%
0.0 In
10:00

NW
NW

 3 / 5 mph 18 / 13°F 93% 1014 mb
Low level cloud: 44%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: low
91%
0.0 In
16:00

ESE
ESE

 4 / 5 mph 29 / 24°F 78% 1027 mb
Low level cloud: 98%
Mid level cloud: 2%
High level cloud: 2%
Most Significant Cloud Type: low
99%
0.0 In
22:00

W
W

 2 / 5 mph 1 / -4°F 95% 1017 mb
Low level cloud: 0%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: medium
100%
0.0 In
Thu 26
Mar		04:00

SSE
SSE

 2 / 5 mph -11 / -18°F 100% 1026 mb
Low level cloud: 76%
Mid level cloud: 0%
High level cloud: 3%
Most Significant Cloud Type: low
76%
0.0 In
10:00

W
W

 6 / 9 mph 9 / 0°F 85% 1020 mb
Low level cloud: 30%
Mid level cloud: 100%
High level cloud: 37%
Most Significant Cloud Type: medium
100%
0.0 In
16:00

ESE
ESE

 5 / 7 mph 31 / 26°F 79% 1018 mb
Low level cloud: 44%
Mid level cloud: 0%
High level cloud: 3%
Most Significant Cloud Type: low
44%
0.0 In
22:00

WSW
WSW

 7 / 13 mph 12 / 1°F 85% 1017 mb
Low level cloud: 72%
Mid level cloud: 100%
High level cloud: 100%
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