Annual mean 3°C · wettest around September · prevailing wind N
Warmest
17.3 °C
Coldest
-8.6 °C
Wettest
23%
Windiest
3.9 m/s
Prevailing
N
2.8 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 Anchorage over the whole year is 3°C. July is the hottest month, with highs of about 17°C; January is the coldest, with lows of about -8°C. Anchorage has no sharply defined rainy season: the chance of rain on a given day runs from 10% in January, the driest month, to 24% in September, the wettest. Winds in Anchorage are highest in May, averaging 2.9 m/s (10 km/h), and lightest in September, at 2.1 m/s (8 km/h). The prevailing wind is from the N. The clearest skies in Anchorage come in March, when the sky is typically 55% covered; September is the cloudiest month, at 71%.
Month by month Anchorage 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
-11°C
10%
64%
2.5 m/s
0
0
0
February
-4°C
-7°C
-9°C
10%
63%
2.4 m/s
0
0
0
March
-1°C
-6°C
-5°C
11%
55%
2.5 m/s
0
0
2
April
6°C
0°C
2°C
10%
56%
2.6 m/s
0
0
19
May
11°C
7°C
8°C
14%
66%
2.9 m/s
7
0
59
June
16°C
11°C
13°C
13%
61%
2.5 m/s
42
1
86
July
17°C
13°C
16°C
19%
67%
2.2 m/s
63
3
85
August
16°C
11°C
14°C
24%
70%
2.2 m/s
49
0
86
September
11°C
7°C
9°C
24%
71%
2.1 m/s
8
0
69
October
5°C
1°C
1°C
19%
62%
2.3 m/s
0
0
17
November
-3°C
-5°C
-7°C
13%
61%
2.3 m/s
0
0
1
December
-6°C
-7°C
-10°C
12%
68%
2.4 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 Anchorage weather by season
Year round, Anchorage has days of about -7°C at their warmest in January, its coolest month, and 17°C in July, its warmest; the coolest hours of the day run from -8°C to 13°C through the year, and the average temperature over the year is 3°C around the clock. Rain is most likely around September and least likely around January. 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.
Anchorage weather in winterDecember to February
High -6°CLow -7°CRain 11%
Winter in Anchorage has typical daily highs of about -6°C and lows of about -7°C, with a 11% chance of rain on a given day.
Anchorage weather in springMarch to May
High 6°CLow 1°CRain 12%
Spring in Anchorage has typical daily highs of about 6°C and lows of about 1°C, with a 12% chance of rain on a given day.
Anchorage weather in summerJune to August
High 16°CLow 12°CRain 18%
Summer in Anchorage has typical daily highs of about 16°C and lows of about 12°C, with a 18% chance of rain on a given day.
Anchorage weather in autumnSeptember to November
High 4°CLow 1°CRain 18%
Autumn in Anchorage has typical daily highs of about 4°C and lows of about 1°C, with a 18% chance of rain on a given day.
When is the rainy season in Anchorage?
Anchorage has no sharply defined rainy season: the chance of rain on a given day runs from 10% in January, the driest month, to 24% in September, the wettest.
What time of year is Anchorage windiest?
Winds in Anchorage are highest in May, averaging 2.9 m/s (10 km/h), and lightest in September, at 2.1 m/s (8 km/h). The prevailing wind is from the N.
What is the average temperature in Anchorage year round?
The average temperature in Anchorage over the whole year is 3°C. July is the hottest month, with highs of about 17°C; January is the coldest, with lows of about -8°C.