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St. Gallen 14 Day Long Range Forecast

14 Day weather providing an extended long range forecast outlook for St. Gallen

Switzerland

Long range weather outlook for St. Gallen includes 14 day forecast summary:

The next 14 day outlook for St. Gallen shows the average daytime maximum temperature will be around 4°C, with a high for the two weeks of 8°C expected on the afternoon of Sunday 1st. The mean minimum temperature will be -1°C, dipping to its lowest on the morning of Saturday 7th at -5°C. Expect the following 14 days ahead to have some days seeing a little precipitation and some days with rain, sleet or snow. The current forecast indicates Friday 6th will have the most precipitation with an accumulation of around 18.0mm. On the whole winds are likely to be light.

DayLocal TimeDirSpeed/
Gust		Temp/
Feels Like		HumidityPressureCloud AmountPrecip AmountWeather
Thu 27
Feb		16:00

SSW
SSW

 9 / 11 mph 38 / 31°F 67% 1001 mb
Low level cloud: 0%
Mid level cloud: 92%
High level cloud: 100%
Most Significant Cloud Type: medium
95%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

SSW
SSW

 16 / 21 mph 33 / 22°F 88% 1000 mb
Low level cloud: 62%
Mid level cloud: 51%
High level cloud: 3%
Most Significant Cloud Type: low
79%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

W
W

 25 / 33 mph 32 / 19°F 93% 1008 mb
Low level cloud: 70%
Mid level cloud: 68%
High level cloud: 0%
Most Significant Cloud Type: low
94%
Expect 0.2 In of precipitation over the past 3 hours.
0.2 In
Fri 28
Feb		01:00

W
W

 17 / 23 mph 31 / 20°F 92% 1014 mb
Low level cloud: 68%
Mid level cloud: 98%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
04:00

W
W

 16 / 22 mph 30 / 18°F 96% 1018 mb
Low level cloud: 81%
Mid level cloud: 67%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
07:00

WSW
WSW

 11 / 17 mph 28 / 19°F 90% 1023 mb
Low level cloud: 7%
Mid level cloud: 28%
High level cloud: 5%
Most Significant Cloud Type: medium
46%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

SW
SW

 7 / 8 mph 34 / 28°F 78% 1024 mb
Low level cloud: 0%
Mid level cloud: 9%
High level cloud: 33%
Most Significant Cloud Type: medium
10%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

SSW
SSW

 3 / 3 mph 38 / 36°F 66% 1022 mb
Low level cloud: 0%
Mid level cloud: 25%
High level cloud: 14%
Most Significant Cloud Type: medium
25%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

SE
SE

 4 / 5 mph 39 / 36°F 68% 1019 mb
Low level cloud: 0%
Mid level cloud: 31%
High level cloud: 15%
Most Significant Cloud Type: medium
32%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

S
S

 5 / 11 mph 33 / 28°F 76% 1020 mb
Low level cloud: 0%
Mid level cloud: 99%
High level cloud: 4%
Most Significant Cloud Type: medium
99%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

S
S

 6 / 13 mph 32 / 26°F 71% 1019 mb
Low level cloud: 0%
Mid level cloud: 43%
High level cloud: 30%
Most Significant Cloud Type: medium
44%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sat 29
Feb		01:00

S
S

 6 / 14 mph 31 / 25°F 68% 1017 mb
Low level cloud: 0%
Mid level cloud: 75%
High level cloud: 55%
Most Significant Cloud Type: medium
77%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

S
S

 8 / 16 mph 31 / 24°F 71% 1014 mb
Low level cloud: 0%
Mid level cloud: 43%
High level cloud: 99%
Most Significant Cloud Type: medium
46%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

S
S

 7 / 14 mph 32 / 26°F 70% 1012 mb
Low level cloud: 0%
Mid level cloud: 49%
High level cloud: 47%
Most Significant Cloud Type: medium
51%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

S
S

 9 / 13 mph 38 / 32°F 65% 1008 mb
Low level cloud: 0%
Mid level cloud: 28%
High level cloud: 100%
Most Significant Cloud Type: medium
31%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

SW
SW

 9 / 11 mph 45 / 40°F 69% 1006 mb
Low level cloud: 0%
Mid level cloud: 45%
High level cloud: 100%
Most Significant Cloud Type: medium
49%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

S
S

 7 / 10 mph 45 / 40°F 72% 1005 mb
Low level cloud: 0%
Mid level cloud: 80%
High level cloud: 11%
Most Significant Cloud Type: medium
80%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

SSW
SSW

 8 / 16 mph 37 / 31°F 81% 1007 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
22:00

SW
SW

 5 / 9 mph 36 / 32°F 80% 1009 mb
Low level cloud: 0%
Mid level cloud: 88%
High level cloud: 52%
Most Significant Cloud Type: medium
89%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sun 01
Mar		01:00

SSW
SSW

 4 / 6 mph 35 / 31°F 97% 1010 mb
Low level cloud: 83%
Mid level cloud: 49%
High level cloud: 15%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
04:00

SSW
SSW

 6 / 8 mph 35 / 30°F 97% 1010 mb
Low level cloud: 87%
Mid level cloud: 91%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
07:00

S
S

 5 / 8 mph 35 / 30°F 94% 1009 mb
Low level cloud: 36%
Mid level cloud: 80%
High level cloud: 0%
Most Significant Cloud Type: low
64%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

SSE
SSE

 5 / 6 mph 41 / 37°F 82% 1006 mb
Low level cloud: 0%
Mid level cloud: 16%
High level cloud: 0%
Most Significant Cloud Type: medium
16%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

E
E

 2 / 3 mph 46 / 45°F 76% 1003 mb
Low level cloud: 2%
Mid level cloud: 20%
High level cloud: 0%
Most Significant Cloud Type: medium
25%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

E
E

 2 / 2 mph 46 / 46°F 76% 1000 mb
Low level cloud: 6%
Mid level cloud: 11%
High level cloud: 3%
Most Significant Cloud Type: low
10%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

SSE
SSE

 4 / 8 mph 40 / 37°F 88% 1000 mb
Low level cloud: 1%
Mid level cloud: 43%
High level cloud: 40%
Most Significant Cloud Type: medium
48%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

SW
SW

 6 / 11 mph 38 / 34°F 84% 1002 mb
Low level cloud: 4%
Mid level cloud: 94%
High level cloud: 100%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Mon 02
Mar		01:00

SW
SW

 8 / 11 mph 35 / 29°F 96% 1004 mb
Low level cloud: 79%
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
04:00

SSW
SSW

 6 / 10 mph 34 / 29°F 87% 1003 mb
Low level cloud: 4%
Mid level cloud: 15%
High level cloud: 78%
Most Significant Cloud Type: medium
30%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

SSE
SSE

 6 / 12 mph 31 / 25°F 85% 1002 mb
Low level cloud: 0%
Mid level cloud: 9%
High level cloud: 16%
Most Significant Cloud Type: medium
9%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

WSW
WSW

 3 / 4 mph 38 / 35°F 77% 1000 mb
Low level cloud: 0%
Mid level cloud: 59%
High level cloud: 98%
Most Significant Cloud Type: medium
63%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

S
S

 2 / 3 mph 40 / 39°F 81% 999 mb
Low level cloud: 10%
Mid level cloud: 100%
High level cloud: 96%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

WSW
WSW

 5 / 6 mph 38 / 34°F 95% 999 mb
Low level cloud: 82%
Mid level cloud: 66%
High level cloud: 32%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
19:00

WSW
WSW

 8 / 13 mph 37 / 30°F 86% 1003 mb
Low level cloud: 26%
Mid level cloud: 89%
High level cloud: 100%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

SW
SW

 6 / 11 mph 34 / 28°F 87% 1006 mb
Low level cloud: 0%
Mid level cloud: 100%
High level cloud: 19%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Tue 03
Mar		01:00

SSW
SSW

 4 / 7 mph 32 / 28°F 83% 1008 mb
Low level cloud: 0%
Mid level cloud: 46%
High level cloud: 33%
Most Significant Cloud Type: medium
46%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

S
S

 4 / 7 mph 31 / 27°F 83% 1008 mb
Low level cloud: 13%
Mid level cloud: 49%
High level cloud: 19%
Most Significant Cloud Type: medium
86%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

SSW
SSW

 4 / 9 mph 30 / 26°F 83% 1009 mb
Low level cloud: 47%
Mid level cloud: 47%
High level cloud: 0%
Most Significant Cloud Type: low
63%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

S
S

 3 / 4 mph 38 / 35°F 75% 1008 mb
Low level cloud: 11%
Mid level cloud: 23%
High level cloud: 0%
Most Significant Cloud Type: low
18%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

WSW
WSW

 2 / 2 mph 43 / 42°F 65% 1006 mb
Low level cloud: 0%
Mid level cloud: 29%
High level cloud: 5%
Most Significant Cloud Type: medium
28%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

ENE
ENE

 0 / 1 mph 43 / 42°F 63% 1004 mb
Low level cloud: 0%
Mid level cloud: 16%
High level cloud: 100%
Most Significant Cloud Type: medium
20%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

SE
SE

 3 / 6 mph 36 / 34°F 74% 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
22:00

SSE
SSE

 4 / 7 mph 35 / 32°F 80% 1004 mb
Low level cloud: 0%
Mid level cloud: 40%
High level cloud: 33%
Most Significant Cloud Type: medium
41%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Wed 04
Mar		01:00

SSE
SSE

 4 / 7 mph 34 / 30°F 81% 1002 mb
Low level cloud: 0%
Mid level cloud: 96%
High level cloud: 100%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

SSE
SSE

 6 / 10 mph 34 / 29°F 82% 1001 mb
Low level cloud: 0%
Mid level cloud: 25%
High level cloud: 24%
Most Significant Cloud Type: medium
26%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

S
S

 6 / 10 mph 34 / 28°F 87% 1001 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
10:00

S
S

 6 / 9 mph 37 / 31°F 92% 1002 mb
Low level cloud: 71%
Mid level cloud: 54%
High level cloud: 75%
Most Significant Cloud Type: low
98%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
13:00

WSW
WSW

 11 / 13 mph 40 / 33°F 94% 1003 mb
Low level cloud: 85%
Mid level cloud: 60%
High level cloud: 35%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
16:00

W
W

 15 / 18 mph 39 / 31°F 91% 1006 mb
Low level cloud: 90%
Mid level cloud: 55%
High level cloud: 10%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
19:00

W
W

 11 / 15 mph 37 / 29°F 93% 1012 mb
Low level cloud: 75%
Mid level cloud: 58%
High level cloud: 0%
Most Significant Cloud Type: low
94%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
22:00

WSW
WSW

 9 / 11 mph 35 / 28°F 97% 1017 mb
Low level cloud: 88%
Mid level cloud: 61%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
DayLocal TimeDirSpeed/
Gust		Temp/
Feels Like		HumidityPressureCloud AmountPrecip AmountWeather
Thu 05
Mar		01:00

W
W

 12 / 17 mph 36 / 27°F 87% 1010 mb
Low level cloud: 18%
Mid level cloud: 43%
High level cloud: 0%
Most Significant Cloud Type: low
32%
0.2 In
07:00

SW
SW

 11 / 18 mph 31 / 22°F 89% 997 mb
Low level cloud: 24%
Mid level cloud: 45%
High level cloud: 1%
Most Significant Cloud Type: low
39%
0.1 In
13:00

W
W

 21 / 28 mph 36 / 26°F 73% 1002 mb
Low level cloud: 0%
Mid level cloud: 46%
High level cloud: 0%
Most Significant Cloud Type: medium
45%
0.1 In
19:00

W
W

 13 / 16 mph 35 / 27°F 93% 1012 mb
Low level cloud: 22%
Mid level cloud: 67%
High level cloud: 22%
Most Significant Cloud Type: medium
100%
0.1 In
Fri 06
Mar		01:00

SW
SW

 9 / 11 mph 31 / 23°F 91% 1007 mb
Low level cloud: 51%
Mid level cloud: 77%
High level cloud: 11%
Most Significant Cloud Type: low
79%
0.0 In
07:00

SW
SW

 8 / 13 mph 26 / 18°F 85% 1018 mb
Low level cloud: 5%
Mid level cloud: 100%
High level cloud: 0%
Most Significant Cloud Type: medium
100%
0.0 In
13:00

W
W

 10 / 13 mph 37 / 31°F 94% 1011 mb
Low level cloud: 76%
Mid level cloud: 65%
High level cloud: 33%
Most Significant Cloud Type: low
100%
0.1 In
19:00

SW
SW

 3 / 5 mph 38 / 36°F 97% 1024 mb
Low level cloud: 60%
Mid level cloud: 70%
High level cloud: 0%
Most Significant Cloud Type: low
84%
0.1 In
Sat 07
Mar		01:00

N
N

 3 / 3 mph 34 / 32°F 99% 1024 mb
Low level cloud: 87%
Mid level cloud: 51%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.2 In
07:00

S
S

 5 / 8 mph 26 / 20°F 84% 1025 mb
Low level cloud: 0%
Mid level cloud: 7%
High level cloud: 11%
Most Significant Cloud Type: medium
7%
0.0 In
13:00

NE
NE

 3 / 3 mph 37 / 35°F 84% 1023 mb
Low level cloud: 84%
Mid level cloud: 9%
High level cloud: 0%
Most Significant Cloud Type: low
87%
0.0 In
19:00

S
S

 4 / 6 mph 38 / 35°F 87% 1023 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 8%
Most Significant Cloud Type: high
7%
0.0 In
Sun 08
Mar		01:00

S
S

 4 / 7 mph 29 / 24°F 85% 1022 mb
Low level cloud: 0%
Mid level cloud: 35%
High level cloud: 75%
Most Significant Cloud Type: medium
38%
0.0 In
07:00

S
S

 3 / 6 mph 33 / 31°F 78% 1027 mb
Low level cloud: 0%
Mid level cloud: 46%
High level cloud: 100%
Most Significant Cloud Type: medium
50%
0.0 In
13:00

W
W

 2 / 2 mph 44 / 44°F 72% 1019 mb
Low level cloud: 0%
Mid level cloud: 26%
High level cloud: 0%
Most Significant Cloud Type: medium
25%
0.0 In
19:00

NNE
NNE

 6 / 10 mph 38 / 33°F 89% 1030 mb
Low level cloud: 59%
Mid level cloud: 44%
High level cloud: 0%
Most Significant Cloud Type: low
74%
0.0 In
Mon 09
Mar		01:00

SSW
SSW

 6 / 12 mph 34 / 28°F 83% 1024 mb
Low level cloud: 11%
Mid level cloud: 22%
High level cloud: 100%
Most Significant Cloud Type: medium
56%
0.0 In
07:00

SSE
SSE

 2 / 3 mph 32 / 32°F 87% 1033 mb
Low level cloud: 10%
Mid level cloud: 41%
High level cloud: 10%
Most Significant Cloud Type: medium
69%
0.0 In
13:00

WSW
WSW

 9 / 12 mph 37 / 31°F 97% 1024 mb
Low level cloud: 98%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.2 In
19:00

ESE
ESE

 2 / 3 mph 42 / 42°F 78% 1034 mb
Low level cloud: 0%
Mid level cloud: 44%
High level cloud: 94%
Most Significant Cloud Type: medium
47%
0.0 In
Tue 10
Mar		01:00

SW
SW

 6 / 11 mph 40 / 36°F 93% 1026 mb
Low level cloud: 80%
Mid level cloud: 75%
High level cloud: 22%
Most Significant Cloud Type: low
100%
0.1 In
07:00

SSE
SSE

 2 / 3 mph 35 / 33°F 78% 1037 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 8%
Most Significant Cloud Type: high
7%
0.0 In
13:00

WSW
WSW

 7 / 8 mph 50 / 48°F 81% 1023 mb
Low level cloud: 24%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: low
26%
0.0 In
19:00

SSW
SSW

 4 / 7 mph 44 / 42°F 81% 1038 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 89%
Most Significant Cloud Type: medium
6%
0.0 In
Wed 11
Mar		01:00

ENE
ENE

 6 / 7 mph 42 / 38°F 88% 1029 mb
Low level cloud: 82%
Mid level cloud: 9%
High level cloud: 0%
Most Significant Cloud Type: low
85%
0.0 In
07:00

SE
SE

 3 / 6 mph 36 / 34°F 73% 1040 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
13:00

ENE
ENE

 6 / 7 mph 51 / 49°F 72% 1027 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
19:00

SSE
SSE

 3 / 5 mph 50 / 49°F 82% 1036 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
Thu 12
Mar		01:00

SSW
SSW

 2 / 3 mph 43 / 42°F 85% 1028 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 9%
Most Significant Cloud Type: high
9%
0.0 In
07:00

S
S

 2 / 3 mph 40 / 40°F 71% 1034 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 33%
Most Significant Cloud Type: medium
3%
0.0 In
13:00

ENE
ENE

 2 / 2 mph 54 / 55°F 65% 1024 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 1%
Most Significant Cloud Type: high
0%
0.0 In
19:00

S
S

 4 / 6 mph 52 / 51°F 79% 1030 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: medium
3%
0.0 In
Fri 13
Mar		01:00

S
S

 4 / 5 mph 43 / 41°F 85% 1027 mb
Low level cloud: 0%
Mid level cloud: 1%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
07:00

SSW
SSW

 4 / 8 mph 41 / 38°F 57% 1029 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
13:00

SE
SE

 2 / 2 mph 59 / 59°F 64% 1026 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
19:00

S
S

 5 / 11 mph 51 / 49°F 71% 1022 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 5%
Most Significant Cloud Type: high
5%
0.0 In

Other Locations Near to St. Gallen

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