Juneau climate

Juneau Weather in December

NOAA 1991-2020 normals for Juneau Dwtn, 0.6 km from Juneau

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 daily high and low temperature at Juneau, in °F, with the record for each date.-40-200204060151015202530
  • 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.

DateNormal highNormal lowRecord highRecord lowChance wetChance of snow
Dec 138°F31°F49°F 2020-4°F 199029%
Dec 238°F30°F52°F 2020-6°F 197029%
Dec 338°F30°F47°F 1963-6°F 197030%
Dec 438°F30°F47°F 2020-6°F 197030%
Dec 538°F30°F49°F 2020-7°F 197030%
Dec 638°F30°F50°F 2017-9°F 194830%
Dec 738°F30°F51°F 2017-13°F 194831%
Dec 838°F30°F54°F 2017-16°F 194831%
Dec 938°F30°F48°F 2002-4°F 197731%
Dec 1037°F30°F47°F 20170°F 197731%
Dec 1137°F29°F49°F 2017-1°F 195531%
Dec 1237°F29°F48°F 1942-8°F 195532%
Dec 1337°F29°F47°F 1989-11°F 196432%
Dec 1437°F29°F47°F 2017-15°F 196432%
Dec 1537°F29°F46°F 2005-14°F 196432%
Dec 1636°F29°F46°F 1954-9°F 196432%
Dec 1736°F29°F47°F 19810°F 198332%
Dec 1836°F29°F48°F 19540°F 195532%
Dec 1936°F28°F47°F 1985-6°F 202532%
Dec 2036°F28°F50°F 1985-7°F 202532%
Dec 2136°F28°F47°F 1999-6°F 195532%
Dec 2235°F28°F48°F 1999-10°F 202532%
Dec 2335°F28°F54°F 1999-10°F 202532%
Dec 2435°F28°F48°F 1985-11°F 196432%
Dec 2535°F28°F48°F 1989-10°F 195532%
Dec 2635°F27°F53°F 1999-10°F 195532%
Dec 2735°F27°F48°F 1999-11°F 194932%
Dec 2834°F27°F47°F 2005-9°F 194932%
Dec 2934°F27°F46°F 1963-13°F 194932%
Dec 3034°F27°F48°F 2023-15°F 196432%
Dec 3134°F27°F47°F 1961-21°F 194932%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Juneau, in percent, and of at least 0.1 inch of snowfall.0102030401102030
  • 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

Every day of December: sun and moon

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.