December weather in Gustavus, AK
The average temperature in Gustavus in December is 29.5°F (24.1°F–34.9°F). Average precipitation: 6.50 inches.
December is a winter month in Gustavus, and is cooler than the annual average of 40.7°F. Daily temperatures swing about 10.8°F between overnight low and afternoon high. Daylight averages about 6h 3m. For travel, December is a wet month.
Avg High
34.9°F
Avg Low
24.1°F
Precipitation
6.50 in
Daylight
6h 3m
December records in Gustavus
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 48.7°F (2020) | 5.5°F (2014) | 3.77 in (2020) |
| December 2 | 49.6°F (2020) | 3.4°F (2013) | 1.92 in (2020) |
| December 3 | 43.7°F (2020) | 1.9°F (2013) | 1.76 in (2024) |
| December 4 | 49.5°F (2024) | 1.8°F (2013) | 0.46 in (2020) |
| December 5 | 48.9°F (2023) | 1.0°F (2013) | 1.04 in (2020) |
| December 6 | 51.6°F (2017) | -0.6°F (2013) | 0.87 in (2025) |
| December 7 | 51.8°F (2017) | 10.8°F (2013) | 0.71 in (2020) |
| December 8 | 53.4°F (2017) | 0.9°F (2016) | 0.42 in (2014) |
| December 9 | 48.2°F (2018) | -3.1°F (2016) | 0.73 in (2017) |
| December 10 | 45.0°F (2018) | -5.1°F (2025) | 0.66 in (2012) |
| December 11 | 42.6°F (2017) | -5.8°F (2025) | 1.50 in (2013) |
| December 12 | 44.1°F (2017) | -9.0°F (2025) | 0.74 in (2013) |
| December 13 | 48.7°F (2017) | -6.0°F (2025) | 0.76 in (2013) |
| December 14 | 48.9°F (2014) | -1.3°F (2016) | 0.81 in (2022) |
| December 15 | 45.3°F (2014) | -4.5°F (2016) | 0.46 in (2022) |
| December 16 | 45.5°F (2014) | -2.4°F (2016) | 0.41 in (2017) |
| December 17 | 46.0°F (2018) | -2.7°F (2013) | 0.48 in (2016) |
| December 18 | 44.1°F (2018) | -5.3°F (2013) | 0.66 in (2020) |
| December 19 | 42.4°F (2016) | -8.0°F (2025) | 0.54 in (2020) |
| December 20 | 42.6°F (2016) | -9.6°F (2025) | 0.59 in (2020) |
| December 21 | 41.9°F (2015) | 0.7°F (2012) | 0.99 in (2016) |
| December 22 | 47.5°F (2024) | -11.0°F (2025) | 0.98 in (2013) |
| December 23 | 41.4°F (2024) | -12.1°F (2025) | 0.74 in (2019) |
| December 24 | 40.8°F (2024) | -5.4°F (2025) | 0.46 in (2013) |
| December 25 | 48.2°F (2024) | -6.3°F (2021) | 0.35 in (2013) |
| December 26 | 48.0°F (2024) | -6.9°F (2021) | 0.46 in (2015) |
| December 27 | 41.9°F (2019) | 1.6°F (2017) | 0.41 in (2019) |
| December 28 | 41.2°F (2019) | -0.2°F (2017) | 1.30 in (2025) |
| December 29 | 43.2°F (2019) | -5.8°F (2017) | 0.69 in (2023) |
| December 30 | 42.3°F (2015) | -8.5°F (2017) | 1.00 in (2013) |
| December 31 | 43.9°F (2015) | -5.8°F (2017) | 0.77 in (2025) |