December weather in Sheridan, MT
The average temperature in Sheridan in December is 22.9°F (13.5°F–32.3°F). Average precipitation: 0.66 inches.
December is a winter month in Sheridan, and is cooler than the annual average of 43°F. Daily temperatures swing about 18.8°F between overnight low and afternoon high. Daylight averages about 8h 32m. For travel, December is cold.
Avg High
32.3°F
Avg Low
13.5°F
Precipitation
0.66 in
Daylight
8h 32m
December records in Sheridan
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 66.9°F (2021) | -9.9°F (2014) | 0.13 in (2018) |
| December 2 | 64.9°F (2021) | -9.9°F (2009) | 0.14 in (2013) |
| December 3 | 55.9°F (2021) | -8.0°F (2009) | 0.17 in (2017) |
| December 4 | 60.1°F (2021) | -14.1°F (2013) | 0.15 in (2022) |
| December 5 | 54.0°F (2023) | -20.0°F (2013) | 0.07 in (2015) |
| December 6 | 55.9°F (2023) | -18.9°F (2013) | 0.10 in (2016) |
| December 7 | 48.9°F (2023) | -20.0°F (2013) | 0.10 in (2023) |
| December 8 | 60.1°F (2020) | -24.0°F (2009) | 0.08 in (2023) |
| December 9 | 53.1°F (2025) | -18.9°F (2009) | 0.23 in (2016) |
| December 10 | 57.0°F (2025) | -8.0°F (2009) | 0.11 in (2010) |
| December 11 | 57.9°F (2025) | 0.0°F (2009) | 0.04 in (2010) |
| December 12 | 57.9°F (2025) | 3.0°F (2015) | 0.12 in (2018) |
| December 13 | 53.1°F (2025) | 3.9°F (2011) | 0.12 in (2016) |
| December 14 | 57.9°F (2025) | 3.0°F (2009) | 0.32 in (2015) |
| December 15 | 57.0°F (2025) | 7.0°F (2015) | 0.50 in (2016) |
| December 16 | 54.0°F (2025) | -11.9°F (2016) | 0.23 in (2016) |
| December 17 | 55.9°F (2023) | -24.0°F (2016) | 0.18 in (2014) |
| December 18 | 48.9°F (2024) | -13.0°F (2022) | 0.06 in (2018) |
| December 19 | 55.9°F (2023) | -4.0°F (2013) | 0.17 in (2013) |
| December 20 | 51.1°F (2020) | -26.0°F (2022) | 0.21 in (2017) |
| December 21 | 55.9°F (2020) | -38.0°F (2022) | 0.07 in (2011) |
| December 22 | 50.0°F (2023) | -18.9°F (2022) | 0.14 in (2017) |
| December 23 | 50.0°F (2019) | -9.0°F (2017) | 0.10 in (2017) |
| December 24 | 53.1°F (2025) | -6.0°F (2017) | 0.14 in (2013) |
| December 25 | 55.0°F (2025) | 0.0°F (2015) | 0.15 in (2017) |
| December 26 | 48.9°F (2022) | -2.0°F (2015) | 0.28 in (2016) |
| December 27 | 46.9°F (2022) | -4.0°F (2019) | 0.11 in (2022) |
| December 28 | 48.9°F (2011) | 0.0°F (2019) | 0.40 in (2014) |
| December 29 | 48.0°F (2011) | -4.0°F (2014) | 0.80 in (2014) |
| December 30 | 46.9°F (2011) | -18.0°F (2014) | 0.23 in (2010) |
| December 31 | 45.0°F (2025) | -16.1°F (2010) | 1.00 in (2022) |