Annual mean 6°C · wettest around October · prevailing wind SE
Warmest
16.2 °C
Coldest
-1.2 °C
Wettest
38%
Windiest
4.7 m/s
Prevailing
SE
3.5 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 Juneau over the whole year is 6°C. July is the hottest month, with highs of about 16°C; February is the coldest, with lows of about -1°C. Juneau has no sharply defined rainy season: the chance of rain on a given day runs from 21% in March, the driest month, to 36% in October, the wettest. Winds in Juneau are highest in January, averaging 3.8 m/s (14 km/h), and lightest in July, at 2.2 m/s (8 km/h). The prevailing wind is from the SE. The clearest skies in Juneau come in March, when the sky is typically 74% covered; July is the cloudiest month, at 83%.
Month by month Juneau 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
1°C
-0°C
-5°C
31%
82%
3.8 m/s
0
0
1
February
0°C
-1°C
-5°C
25%
74%
3.4 m/s
0
0
0
March
3°C
0°C
-2°C
21%
74%
3.5 m/s
0
0
5
April
7°C
3°C
2°C
24%
76%
2.8 m/s
0
0
20
May
11°C
7°C
8°C
25%
79%
2.5 m/s
6
0
56
June
14°C
11°C
12°C
22%
83%
2.3 m/s
25
0
81
July
16°C
13°C
14°C
22%
83%
2.2 m/s
42
0
86
August
15°C
12°C
13°C
29%
82%
2.3 m/s
37
0
85
September
12°C
9°C
10°C
33%
81%
2.3 m/s
7
0
72
October
8°C
6°C
4°C
36%
83%
2.9 m/s
0
0
29
November
3°C
2°C
-2°C
32%
83%
3.5 m/s
0
0
5
December
1°C
0°C
-4°C
33%
81%
3.5 m/s
0
0
2
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 Juneau weather by season
Year round, Juneau has days of about 0°C at their warmest in February, its coolest month, and 16°C in July, its warmest; the coolest hours of the day run from -1°C to 13°C through the year, and the average temperature over the year is 6°C around the clock. Rain is most likely around October and least likely around March. 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.
Juneau weather in winterDecember to February
High 1°CLow -0°CRain 29%
Winter in Juneau has typical daily highs of about 1°C and lows of about -0°C, with a 29% chance of rain on a given day.
Juneau weather in springMarch to May
High 7°CLow 4°CRain 23%
Spring in Juneau has typical daily highs of about 7°C and lows of about 4°C, with a 23% chance of rain on a given day.
Juneau weather in summerJune to August
High 15°CLow 12°CRain 24%
Summer in Juneau has typical daily highs of about 15°C and lows of about 12°C, with a 24% chance of rain on a given day.
Juneau weather in autumnSeptember to November
High 8°CLow 6°CRain 34%
Autumn in Juneau has typical daily highs of about 8°C and lows of about 6°C, with a 34% chance of rain on a given day.
When is the rainy season in Juneau?
Juneau has no sharply defined rainy season: the chance of rain on a given day runs from 21% in March, the driest month, to 36% in October, the wettest.
What time of year is Juneau windiest?
Winds in Juneau are highest in January, averaging 3.8 m/s (14 km/h), and lightest in July, at 2.2 m/s (8 km/h). The prevailing wind is from the SE.
What is the average temperature in Juneau year round?
The average temperature in Juneau over the whole year is 6°C. July is the hottest month, with highs of about 16°C; February is the coldest, with lows of about -1°C.