Juneau Weather in December
Average highs run from 38°F on December 1 to 34°F on December 31, and lows from 31°F to 27°F. Normal precipitation for the month is 9.93 in.
December day by day
The normal high and low for each date, and the record, in °F.
- Normal low
- Normal high
- Record high
- Record low
December at a glance
- Average high
- 36°F
- Average low
- 29°F
- Precipitation
- 9.93 in
- Snowfall
- 18.1 in
- Record high
- 54°FDec 8, 2017
- Record low
- -21°FDec 31, 1949
- Chance of a freeze
- 100%
- Daylight
- 6 h 53 min to 6 h 30 min
- Cloud cover
- 77%
- Humidity
- 96%
- Dew point
- 17°F
- Wind
- 10.5 mph
Every day of the month
A wet day has at least 0.01 inch of precipitation; snow means at least 0.1 inch of snowfall.
| Date | Normal high | Normal low | Record high | Record low | Chance wet | Chance of snow |
|---|---|---|---|---|---|---|
| Dec 1 | 38°F | 31°F | 49°F 2020 | -4°F 1990 | 29% | |
| Dec 2 | 38°F | 30°F | 52°F 2020 | -6°F 1970 | 29% | |
| Dec 3 | 38°F | 30°F | 47°F 1963 | -6°F 1970 | 30% | |
| Dec 4 | 38°F | 30°F | 47°F 2020 | -6°F 1970 | 30% | |
| Dec 5 | 38°F | 30°F | 49°F 2020 | -7°F 1970 | 30% | |
| Dec 6 | 38°F | 30°F | 50°F 2017 | -9°F 1948 | 30% | |
| Dec 7 | 38°F | 30°F | 51°F 2017 | -13°F 1948 | 31% | |
| Dec 8 | 38°F | 30°F | 54°F 2017 | -16°F 1948 | 31% | |
| Dec 9 | 38°F | 30°F | 48°F 2002 | -4°F 1977 | 31% | |
| Dec 10 | 37°F | 30°F | 47°F 2017 | 0°F 1977 | 31% | |
| Dec 11 | 37°F | 29°F | 49°F 2017 | -1°F 1955 | 31% | |
| Dec 12 | 37°F | 29°F | 48°F 1942 | -8°F 1955 | 32% | |
| Dec 13 | 37°F | 29°F | 47°F 1989 | -11°F 1964 | 32% | |
| Dec 14 | 37°F | 29°F | 47°F 2017 | -15°F 1964 | 32% | |
| Dec 15 | 37°F | 29°F | 46°F 2005 | -14°F 1964 | 32% | |
| Dec 16 | 36°F | 29°F | 46°F 1954 | -9°F 1964 | 32% | |
| Dec 17 | 36°F | 29°F | 47°F 1981 | 0°F 1983 | 32% | |
| Dec 18 | 36°F | 29°F | 48°F 1954 | 0°F 1955 | 32% | |
| Dec 19 | 36°F | 28°F | 47°F 1985 | -6°F 2025 | 32% | |
| Dec 20 | 36°F | 28°F | 50°F 1985 | -7°F 2025 | 32% | |
| Dec 21 | 36°F | 28°F | 47°F 1999 | -6°F 1955 | 32% | |
| Dec 22 | 35°F | 28°F | 48°F 1999 | -10°F 2025 | 32% | |
| Dec 23 | 35°F | 28°F | 54°F 1999 | -10°F 2025 | 32% | |
| Dec 24 | 35°F | 28°F | 48°F 1985 | -11°F 1964 | 32% | |
| Dec 25 | 35°F | 28°F | 48°F 1989 | -10°F 1955 | 32% | |
| Dec 26 | 35°F | 27°F | 53°F 1999 | -10°F 1955 | 32% | |
| Dec 27 | 35°F | 27°F | 48°F 1999 | -11°F 1949 | 32% | |
| Dec 28 | 34°F | 27°F | 47°F 2005 | -9°F 1949 | 32% | |
| Dec 29 | 34°F | 27°F | 46°F 1963 | -13°F 1949 | 32% | |
| Dec 30 | 34°F | 27°F | 48°F 2023 | -15°F 1964 | 32% | |
| Dec 31 | 34°F | 27°F | 47°F 1961 | -21°F 1949 | 32% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (AKST).
- December 1
- sunrise 8:20 AM, sunset 3:13 PM
- December 31
- sunrise 8:46 AM, sunset 3:16 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00504094 (Juneau Dwtn), public domain. Records: NOAA GHCN-Daily, station USW00025309, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.