Annual mean 2°C · wettest around March · prevailing wind SW
Warmest
16.9 °C
Coldest
-7.6 °C
Wettest
25%
Windiest
5.1 m/s
Prevailing
SW
4.2 m/s average
When this place is good five ratings · thirty-six ten-day sections · click a cell to read it
never good
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Every reading
bars actual · line feels-like, °Cchance of rain, %wind speed, m/ssky covered, %
The average temperature in Alta over the whole year is 2°C. July is the hottest month, with highs of about 16°C; January is the coldest, with lows of about -8°C. Alta has no sharply defined rainy season: the chance of rain on a given day runs from 11% in June, the driest month, to 23% in March, the wettest. Winds in Alta are highest in February, averaging 4.5 m/s (16 km/h), and lightest in August, at 3.5 m/s (13 km/h). The prevailing wind is from the SW. The clearest skies in Alta come in January, when the sky is typically 63% covered; August is the cloudiest month, at 72%.
Month by month Alta climate by month: average temperatures year round · click a month to read it
Month
High
Low
Feels like
Chance of rain
Cloud
Wind
Being outside
Sun
Walking
January
-7°C
-8°C
-13°C
17%
63%
4.3 m/s
0
0
0
February
-5°C
-7°C
-11°C
17%
64%
4.5 m/s
0
0
0
March
-3°C
-6°C
-8°C
23%
64%
4.3 m/s
0
0
0
April
2°C
-2°C
-4°C
17%
66%
3.8 m/s
0
0
3
May
7°C
4°C
2°C
12%
68%
4.0 m/s
1
0
23
June
12°C
9°C
8°C
11%
71%
4.0 m/s
11
1
58
July
16°C
12°C
13°C
11%
66%
3.7 m/s
38
3
78
August
15°C
11°C
12°C
13%
72%
3.5 m/s
29
1
77
September
10°C
7°C
7°C
13%
71%
3.6 m/s
6
0
51
October
3°C
2°C
-1°C
16%
71%
3.6 m/s
0
0
7
November
-2°C
-2°C
-7°C
23%
65%
4.1 m/s
0
0
0
December
-5°C
-6°C
-11°C
19%
64%
4.2 m/s
0
0
0
High and low are the warmest and coolest of four readings a day — midnight, 6am, noon and 6pm — so a true overnight low can sit a degree or two under them. Chance of rain, cloud and wind are the day’s average; feels-like and the three ratings (each out of 100: Good from 55, Ideal from 80) are read at midday.
Seasons, and the year in short Alta weather by season
Year round, Alta has days of about -7°C at their warmest in January, its coolest month, and 16°C in July, its warmest; the coolest hours of the day run from -8°C to 12°C through the year, and the average temperature over the year is 2°C around the clock. Rain is most likely around March and least likely around June. Every figure here is a decade of observations blended into one representative year, so it reads as what this date is usually like, not a forecast for one particular day.
Alta weather in winterDecember to February
High -6°CLow -7°CRain 17%
Winter in Alta has typical daily highs of about -6°C and lows of about -7°C, with a 17% chance of rain on a given day.
Alta weather in springMarch to May
High 2°CLow -1°CRain 17%
Spring in Alta has typical daily highs of about 2°C and lows of about -1°C, with a 17% chance of rain on a given day.
Alta weather in summerJune to August
High 14°CLow 11°CRain 12%
Summer in Alta has typical daily highs of about 14°C and lows of about 11°C, with a 12% chance of rain on a given day.
Alta weather in autumnSeptember to November
High 4°CLow 2°CRain 17%
Autumn in Alta has typical daily highs of about 4°C and lows of about 2°C, with a 17% chance of rain on a given day.
When is the rainy season in Alta?
Alta has no sharply defined rainy season: the chance of rain on a given day runs from 11% in June, the driest month, to 23% in March, the wettest.
What time of year is Alta windiest?
Winds in Alta are highest in February, averaging 4.5 m/s (16 km/h), and lightest in August, at 3.5 m/s (13 km/h). The prevailing wind is from the SW.
What is the average temperature in Alta year round?
The average temperature in Alta over the whole year is 2°C. July is the hottest month, with highs of about 16°C; January is the coldest, with lows of about -8°C.