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Alagna Valsesia 14 Day Long Range Forecast

14 Day weather providing an extended long range forecast outlook for Alagna Valsesia

Italy

Long range weather outlook for Alagna Valsesia includes 14 day forecast summary:

The forecast for Alagna Valsesia in the coming two weeks is predicting the average daytime maximum temperature will be around 12°C, with a high for the two weeks of 18°C expected on the afternoon of Friday 16th. The average minimum temperature will be 2°C, dipping to its lowest on the morning of Saturday 10th at 0°C. The fortnight ahead will have some days seeing a little precipitation and some days with rain. Current predictions suggest Tuesday 20th will have the most precipitation with an accumulation of around 16.0mm. On the whole winds are likely to be light.

DayLocal TimeDirSpeed/
Gust
Temp/
Feels Like
HumidityPressureCloud AmountPrecip AmountWeather
Sat 10
May
16:00

SE
SE

3 / 4 mph 49 / 47°F 87% 1017 mb
Low level cloud: 21%
Mid level cloud: 38%
High level cloud: 4%
Most Significant Cloud Type: low
34%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

SE
SE

2 / 2 mph 47 / 46°F 94% 1017 mb
Low level cloud: 40%
Mid level cloud: 45%
High level cloud: 10%
Most Significant Cloud Type: low
56%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

SSW
SSW

2 / 3 mph 36 / 36°F 95% 1019 mb
Low level cloud: 44%
Mid level cloud: 44%
High level cloud: 12%
Most Significant Cloud Type: low
60%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sun 11
May
01:00

NNW
NNW

1 / 2 mph 35 / 35°F 91% 1018 mb
Low level cloud: 9%
Mid level cloud: 24%
High level cloud: 26%
Most Significant Cloud Type: low
20%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

NW
NW

2 / 4 mph 33 / 32°F 88% 1018 mb
Low level cloud: 5%
Mid level cloud: 27%
High level cloud: 15%
Most Significant Cloud Type: medium
40%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

S
S

1 / 2 mph 45 / 44°F 81% 1016 mb
Low level cloud: 0%
Mid level cloud: 20%
High level cloud: 2%
Most Significant Cloud Type: medium
20%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

SE
SE

4 / 4 mph 49 / 47°F 78% 1015 mb
Low level cloud: 1%
Mid level cloud: 24%
High level cloud: 0%
Most Significant Cloud Type: medium
26%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

SE
SE

5 / 6 mph 52 / 48°F 79% 1013 mb
Low level cloud: 3%
Mid level cloud: 46%
High level cloud: 0%
Most Significant Cloud Type: medium
54%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

SE
SE

4 / 5 mph 53 / 50°F 81% 1012 mb
Low level cloud: 7%
Mid level cloud: 27%
High level cloud: 0%
Most Significant Cloud Type: medium
47%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

SE
SE

3 / 4 mph 48 / 47°F 87% 1012 mb
Low level cloud: 13%
Mid level cloud: 46%
High level cloud: 14%
Most Significant Cloud Type: medium
84%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

SE
SE

1 / 1 mph 42 / 42°F 94% 1013 mb
Low level cloud: 31%
Mid level cloud: 32%
High level cloud: 75%
Most Significant Cloud Type: low
50%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Mon 12
May
01:00

WNW
WNW

1 / 2 mph 36 / 36°F 93% 1012 mb
Low level cloud: 19%
Mid level cloud: 32%
High level cloud: 20%
Most Significant Cloud Type: low
33%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

WNW
WNW

2 / 4 mph 35 / 33°F 93% 1012 mb
Low level cloud: 27%
Mid level cloud: 46%
High level cloud: 32%
Most Significant Cloud Type: low
46%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

S
S

1 / 1 mph 47 / 46°F 83% 1011 mb
Low level cloud: 6%
Mid level cloud: 43%
High level cloud: 20%
Most Significant Cloud Type: medium
60%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

SE
SE

4 / 5 mph 51 / 49°F 80% 1010 mb
Low level cloud: 5%
Mid level cloud: 44%
High level cloud: 22%
Most Significant Cloud Type: medium
58%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

SE
SE

4 / 6 mph 51 / 48°F 89% 1009 mb
Low level cloud: 34%
Mid level cloud: 46%
High level cloud: 73%
Most Significant Cloud Type: low
58%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
16:00

SE
SE

5 / 7 mph 51 / 49°F 85% 1009 mb
Low level cloud: 13%
Mid level cloud: 42%
High level cloud: 100%
Most Significant Cloud Type: medium
82%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
19:00

S
S

2 / 3 mph 48 / 48°F 92% 1009 mb
Low level cloud: 19%
Mid level cloud: 92%
High level cloud: 67%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

NNW
NNW

0 / 0 mph 41 / 42°F 94% 1011 mb
Low level cloud: 25%
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
Tue 13
May
01:00

NW
NW

1 / 1 mph 43 / 43°F 90% 1011 mb
Low level cloud: 7%
Mid level cloud: 100%
High level cloud: 98%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

N
N

1 / 1 mph 42 / 42°F 95% 1012 mb
Low level cloud: 43%
Mid level cloud: 99%
High level cloud: 33%
Most Significant Cloud Type: low
81%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

E
E

2 / 2 mph 42 / 41°F 93% 1012 mb
Low level cloud: 53%
Mid level cloud: 44%
High level cloud: 20%
Most Significant Cloud Type: low
71%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

SE
SE

4 / 4 mph 46 / 44°F 94% 1012 mb
Low level cloud: 67%
Mid level cloud: 52%
High level cloud: 16%
Most Significant Cloud Type: low
86%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

SE
SE

4 / 4 mph 49 / 47°F 93% 1013 mb
Low level cloud: 63%
Mid level cloud: 44%
High level cloud: 35%
Most Significant Cloud Type: low
82%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

SE
SE

4 / 5 mph 50 / 47°F 90% 1012 mb
Low level cloud: 47%
Mid level cloud: 44%
High level cloud: 20%
Most Significant Cloud Type: low
64%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

SE
SE

2 / 3 mph 47 / 47°F 99% 1013 mb
Low level cloud: 88%
Mid level cloud: 53%
High level cloud: 11%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
22:00

SSE
SSE

2 / 2 mph 45 / 45°F 99% 1015 mb
Low level cloud: 89%
Mid level cloud: 56%
High level cloud: 11%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Wed 14
May
01:00

S
S

2 / 2 mph 44 / 44°F 99% 1016 mb
Low level cloud: 89%
Mid level cloud: 70%
High level cloud: 26%
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 / 2 mph 44 / 44°F 97% 1016 mb
Low level cloud: 75%
Mid level cloud: 47%
High level cloud: 21%
Most Significant Cloud Type: low
93%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

SSE
SSE

2 / 2 mph 44 / 44°F 97% 1016 mb
Low level cloud: 78%
Mid level cloud: 56%
High level cloud: 6%
Most Significant Cloud Type: low
98%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

SE
SE

3 / 4 mph 45 / 43°F 97% 1017 mb
Low level cloud: 85%
Mid level cloud: 56%
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

SE
SE

4 / 4 mph 48 / 46°F 92% 1016 mb
Low level cloud: 55%
Mid level cloud: 46%
High level cloud: 1%
Most Significant Cloud Type: low
71%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

SE
SE

2 / 2 mph 50 / 49°F 86% 1015 mb
Low level cloud: 21%
Mid level cloud: 45%
High level cloud: 3%
Most Significant Cloud Type: low
36%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

ENE
ENE

0 / 0 mph 48 / 47°F 95% 1015 mb
Low level cloud: 63%
Mid level cloud: 44%
High level cloud: 21%
Most Significant Cloud Type: low
80%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
22:00

NW
NW

2 / 3 mph 38 / 38°F 94% 1016 mb
Low level cloud: 28%
Mid level cloud: 42%
High level cloud: 19%
Most Significant Cloud Type: low
45%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Thu 15
May
01:00

NW
NW

3 / 6 mph 35 / 33°F 95% 1017 mb
Low level cloud: 47%
Mid level cloud: 44%
High level cloud: 3%
Most Significant Cloud Type: low
62%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

NW
NW

4 / 7 mph 35 / 32°F 88% 1015 mb
Low level cloud: 4%
Mid level cloud: 46%
High level cloud: 4%
Most Significant Cloud Type: medium
58%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

NNW
NNW

3 / 3 mph 48 / 46°F 79% 1013 mb
Low level cloud: 0%
Mid level cloud: 18%
High level cloud: 0%
Most Significant Cloud Type: medium
18%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

E
E

1 / 2 mph 56 / 55°F 64% 1012 mb
Low level cloud: 0%
Mid level cloud: 38%
High level cloud: 4%
Most Significant Cloud Type: medium
37%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

E
E

2 / 2 mph 58 / 56°F 68% 1011 mb
Low level cloud: 0%
Mid level cloud: 17%
High level cloud: 8%
Most Significant Cloud Type: medium
17%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
16:00

E
E

1 / 1 mph 59 / 57°F 66% 1010 mb
Low level cloud: 0%
Mid level cloud: 10%
High level cloud: 8%
Most Significant Cloud Type: medium
9%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
19:00

NNW
NNW

2 / 2 mph 47 / 47°F 81% 1011 mb
Low level cloud: 0%
Mid level cloud: 16%
High level cloud: 1%
Most Significant Cloud Type: medium
16%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
22:00

NW
NW

7 / 15 mph 38 / 32°F 81% 1014 mb
Low level cloud: 0%
Mid level cloud: 12%
High level cloud: 1%
Most Significant Cloud Type: medium
12%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Fri 16
May
01:00

NW
NW

7 / 15 mph 36 / 30°F 78% 1013 mb
Low level cloud: 0%
Mid level cloud: 7%
High level cloud: 1%
Most Significant Cloud Type: medium
7%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

NW
NW

8 / 17 mph 35 / 29°F 69% 1013 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 3%
Most Significant Cloud Type: medium
4%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

NW
NW

5 / 6 mph 52 / 49°F 56% 1011 mb
Low level cloud: 0%
Mid level cloud: 1%
High level cloud: 2%
Most Significant Cloud Type: high
2%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

ENE
ENE

2 / 2 mph 60 / 59°F 41% 1010 mb
Low level cloud: 0%
Mid level cloud: 1%
High level cloud: 8%
Most Significant Cloud Type: high
8%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

ESE
ESE

3 / 4 mph 64 / 62°F 44% 1009 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 33%
Most Significant Cloud Type: medium
6%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

E
E

2 / 4 mph 62 / 59°F 61% 1010 mb
Low level cloud: 0%
Mid level cloud: 8%
High level cloud: 15%
Most Significant Cloud Type: medium
9%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
19:00

E
E

2 / 4 mph 53 / 52°F 84% 1012 mb
Low level cloud: 0%
Mid level cloud: 19%
High level cloud: 3%
Most Significant Cloud Type: medium
19%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
22:00

ESE
ESE

3 / 5 mph 38 / 36°F 96% 1015 mb
Low level cloud: 50%
Mid level cloud: 46%
High level cloud: 0%
Most Significant Cloud Type: low
65%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
DayLocal TimeDirSpeed/
Gust
Temp/
Feels Like
HumidityPressureCloud AmountPrecip AmountWeather
Sat 17
May
01:00

WNW
WNW

2 / 5 mph 39 / 38°F 90% 1025 mb
Low level cloud: 2%
Mid level cloud: 20%
High level cloud: 0%
Most Significant Cloud Type: medium
25%
0.0 In
07:00

SSE
SSE

2 / 3 mph 52 / 52°F 89% 1019 mb
Low level cloud: 28%
Mid level cloud: 41%
High level cloud: 0%
Most Significant Cloud Type: low
42%
0.0 In
13:00

SE
SE

4 / 7 mph 52 / 51°F 84% 1013 mb
Low level cloud: 10%
Mid level cloud: 23%
High level cloud: 0%
Most Significant Cloud Type: low
17%
0.0 In
19:00

E
E

2 / 3 mph 56 / 56°F 91% 1016 mb
Low level cloud: 20%
Mid level cloud: 27%
High level cloud: 3%
Most Significant Cloud Type: low
30%
0.0 In
Sun 18
May
01:00

E
E

2 / 3 mph 46 / 46°F 92% 1021 mb
Low level cloud: 14%
Mid level cloud: 44%
High level cloud: 22%
Most Significant Cloud Type: medium
85%
0.0 In
07:00

NW
NW

2 / 3 mph 49 / 49°F 61% 1013 mb
Low level cloud: 0%
Mid level cloud: 7%
High level cloud: 13%
Most Significant Cloud Type: medium
7%
0.0 In
13:00

SE
SE

5 / 10 mph 55 / 54°F 63% 1013 mb
Low level cloud: 0%
Mid level cloud: 10%
High level cloud: 7%
Most Significant Cloud Type: medium
10%
0.0 In
19:00

NNW
NNW

1 / 2 mph 57 / 57°F 80% 1011 mb
Low level cloud: 0%
Mid level cloud: 15%
High level cloud: 0%
Most Significant Cloud Type: medium
15%
0.0 In
Mon 19
May
01:00

NW
NW

2 / 4 mph 37 / 36°F 89% 1017 mb
Low level cloud: 2%
Mid level cloud: 24%
High level cloud: 0%
Most Significant Cloud Type: medium
29%
0.1 In
07:00

NW
NW

2 / 4 mph 49 / 50°F 68% 1013 mb
Low level cloud: 0%
Mid level cloud: 12%
High level cloud: 0%
Most Significant Cloud Type: medium
12%
0.1 In
13:00

ESE
ESE

4 / 9 mph 52 / 50°F 71% 1015 mb
Low level cloud: 0%
Mid level cloud: 13%
High level cloud: 10%
Most Significant Cloud Type: medium
13%
0.1 In
19:00

NNW
NNW

2 / 3 mph 51 / 51°F 83% 1013 mb
Low level cloud: 0%
Mid level cloud: 33%
High level cloud: 33%
Most Significant Cloud Type: medium
33%
0.4 In
Tue 20
May
01:00

NNW
NNW

3 / 6 mph 35 / 32°F 87% 1019 mb
Low level cloud: 0%
Mid level cloud: 32%
High level cloud: 33%
Most Significant Cloud Type: medium
33%
0.3 In
07:00

SE
SE

3 / 6 mph 43 / 42°F 99% 1014 mb
Low level cloud: 91%
Mid level cloud: 83%
High level cloud: 19%
Most Significant Cloud Type: low
100%
0.6 In
13:00

SE
SE

3 / 7 mph 48 / 47°F 86% 1020 mb
Low level cloud: 23%
Mid level cloud: 41%
High level cloud: 11%
Most Significant Cloud Type: low
38%
0.3 In
19:00

N
N

1 / 3 mph 48 / 48°F 97% 1011 mb
Low level cloud: 61%
Mid level cloud: 68%
High level cloud: 100%
Most Significant Cloud Type: low
96%
1.1 In
Wed 21
May
01:00

NW
NW

2 / 4 mph 36 / 36°F 87% 1023 mb
Low level cloud: 0%
Mid level cloud: 15%
High level cloud: 12%
Most Significant Cloud Type: medium
15%
0.1 In
07:00

N
N

2 / 4 mph 41 / 41°F 98% 1006 mb
Low level cloud: 75%
Mid level cloud: 67%
High level cloud: 100%
Most Significant Cloud Type: low
100%
1.2 In
13:00

ESE
ESE

4 / 8 mph 52 / 51°F 76% 1020 mb
Low level cloud: 0%
Mid level cloud: 25%
High level cloud: 13%
Most Significant Cloud Type: medium
25%
0.1 In
19:00

NNW
NNW

4 / 9 mph 44 / 42°F 97% 1005 mb
Low level cloud: 59%
Mid level cloud: 92%
High level cloud: 35%
Most Significant Cloud Type: low
94%
1.3 In
Thu 22
May
01:00

WSW
WSW

2 / 4 mph 37 / 37°F 92% 1023 mb
Low level cloud: 23%
Mid level cloud: 45%
High level cloud: 0%
Most Significant Cloud Type: low
38%
0.5 In
07:00

N
N

3 / 6 mph 45 / 44°F 97% 1005 mb
Low level cloud: 58%
Mid level cloud: 72%
High level cloud: 100%
Most Significant Cloud Type: low
95%
0.2 In
13:00

SE
SE

3 / 6 mph 51 / 51°F 83% 1019 mb
Low level cloud: 2%
Mid level cloud: 28%
High level cloud: 0%
Most Significant Cloud Type: medium
33%
0.1 In
19:00

SW
SW

1 / 2 mph 49 / 49°F 99% 1009 mb
Low level cloud: 82%
Mid level cloud: 87%
High level cloud: 93%
Most Significant Cloud Type: low
100%
0.1 In
Fri 23
May
01:00

WNW
WNW

3 / 7 mph 37 / 35°F 81% 1018 mb
Low level cloud: 0%
Mid level cloud: 9%
High level cloud: 3%
Most Significant Cloud Type: medium
9%
0.1 In
07:00

NNW
NNW

2 / 5 mph 50 / 50°F 86% 1010 mb
Low level cloud: 1%
Mid level cloud: 29%
High level cloud: 34%
Most Significant Cloud Type: medium
32%
0.0 In
13:00

SE
SE

4 / 9 mph 60 / 60°F 52% 1011 mb
Low level cloud: 0%
Mid level cloud: 14%
High level cloud: 0%
Most Significant Cloud Type: medium
14%
0.0 In
19:00

S
S

0 / 1 mph 49 / 49°F 98% 1012 mb
Low level cloud: 68%
Mid level cloud: 43%
High level cloud: 2%
Most Significant Cloud Type: low
83%
0.2 In
Sat 24
May
01:00

NW
NW

4 / 7 mph 40 / 38°F 90% 1014 mb
Low level cloud: 8%
Mid level cloud: 29%
High level cloud: 0%
Most Significant Cloud Type: medium
52%
0.0 In
07:00

WSW
WSW

1 / 3 mph 49 / 49°F 92% 1013 mb
Low level cloud: 27%
Mid level cloud: 45%
High level cloud: 8%
Most Significant Cloud Type: low
44%
0.1 In
13:00

SE
SE

4 / 9 mph 59 / 59°F 70% 1012 mb
Low level cloud: 0%
Mid level cloud: 28%
High level cloud: 0%
Most Significant Cloud Type: medium
27%
0.0 In
19:00

WSW
WSW

2 / 3 mph 54 / 54°F 95% 1012 mb
Low level cloud: 50%
Mid level cloud: 45%
High level cloud: 99%
Most Significant Cloud Type: low
77%
0.3 In
Sun 25
May
01:00

NW
NW

2 / 3 mph 44 / 44°F 91% 1015 mb
Low level cloud: 7%
Mid level cloud: 22%
High level cloud: 1%
Most Significant Cloud Type: medium
41%
0.3 In
07:00

NW
NW

1 / 3 mph 51 / 51°F 88% 1013 mb
Low level cloud: 6%
Mid level cloud: 41%
High level cloud: 0%
Most Significant Cloud Type: medium
57%
0.1 In
13:00

SE
SE

4 / 9 mph 59 / 59°F 80% 1016 mb
Low level cloud: 6%
Mid level cloud: 26%
High level cloud: 14%
Most Significant Cloud Type: medium
42%
0.1 In
19:00

SSW
SSW

0 / 1 mph 53 / 53°F 94% 1013 mb
Low level cloud: 38%
Mid level cloud: 46%
High level cloud: 0%
Most Significant Cloud Type: low
53%
0.1 In

Other Locations Near to Alagna Valsesia

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