Juneau City and Borough · Alaska
Juneau, AK weather averages
NOAA climate normals for 1991-2020, measured at Juneau Ap, 1.8 km from the city centre — month by month temperature, rain and snow.
Quick answer
Juneau averages a daily high of 48.1°F and a daily low of 36.2°F across the year, with 62.27 inches of precipitation. July is the warmest month at 63.9°F and January the coldest at 23.7°F.
- Average annual high
- 48.1°FWarmest month July
- Average annual low
- 36.2°FColdest month January
- Precipitation per year
- 62.27 inWettest month September
- Snowfall per year
- 86.7 in119.3 days at or below 32°F
Juneau weather month by month
Normal daily high and low, precipitation and snowfall for each month, 1991-2020.
| Month | High °F | Low °F | Precip in | Snow in | Range |
|---|---|---|---|---|---|
| January | 32.8 | 23.7 | 5.35 | 27.7 | 23.7 to 32.8 degrees |
| February | 35.2 | 25 | 4.13 | 16.8 | 25 to 35.2 degrees |
| March | 39.6 | 28 | 3.78 | 11.6 | 28 to 39.6 degrees |
| April | 48.4 | 33.3 | 2.94 | 1.1 | 33.3 to 48.4 degrees |
| May | 56.6 | 40.6 | 3.4 | 0 | 40.6 to 56.6 degrees |
| June | 62.2 | 46.9 | 3.24 | 0 | 46.9 to 62.2 degrees |
| July | 63.9 | 50 | 4.6 | 0 | 50 to 63.9 degrees |
| August | 62.7 | 49 | 5.73 | 0 | 49 to 62.7 degrees |
| September | 55.7 | 44.4 | 8.64 | 0 | 44.4 to 55.7 degrees |
| October | 47 | 37.8 | 8.63 | 0.8 | 37.8 to 47 degrees |
| November | 37.8 | 29.1 | 5.99 | 13.1 | 29.1 to 37.8 degrees |
| December | 34.1 | 25.6 | 5.84 | 15.6 | 25.6 to 34.1 degrees |
Source: NOAA NCEI, U.S. Climate Normals 1991-2020 — station USW00025309, Juneau Ap · rates as published for 1991-2020 normals
How to read Juneau climate normals
What a climate normal is, and what it is not.
A normal is the average of thirty years of daily observations at one station — here Juneau Ap, 1.8 km from the centre of Juneau. It describes a typical year, so any single year will run warmer, cooler, wetter or drier. Readings taken at an airport on the edge of town usually sit a degree or two below a dense downtown on summer nights. Juneau sees about 0 days a year at or above 90°F and about 146.4 days with a tenth of an inch of precipitation or more.
Keep going
Other Juneau data on this site.