December weather in Manhattan, MT
The average temperature in Manhattan in December is 21.8°F (11.3°F–32.3°F). Average precipitation: 0.62 inches.
December is a winter month in Manhattan, and is cooler than the annual average of 42.7°F. Daily temperatures swing about 21°F between overnight low and afternoon high. Daylight averages about 8h 29m. For travel, December is cold.
Avg High
32.3°F
Avg Low
11.3°F
Precipitation
0.62 in
Daylight
8h 29m
December records in Manhattan
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 53.1°F (2012) | -20.9°F (2014) | 0.50 in (2009) |
| December 2 | 69.1°F (2021) | -20.0°F (2014) | 0.10 in (2022) |
| December 3 | 66.0°F (2021) | -7.1°F (2009) | 0.12 in (2010) |
| December 4 | 50.0°F (2021) | -8.0°F (2009) | 0.16 in (2017) |
| December 5 | 60.1°F (2021) | -14.1°F (2013) | 0.33 in (2022) |
| December 6 | 60.1°F (2023) | -15.0°F (2013) | 0.01 in (2013) |
| December 7 | 60.1°F (2023) | -16.1°F (2013) | 0.06 in (2012) |
| December 8 | 59.0°F (2023) | -20.9°F (2013) | 0.10 in (2023) |
| December 9 | 55.9°F (2015) | -23.1°F (2009) | 0.00 in (2008) |
| December 10 | 57.0°F (2015) | -23.1°F (2009) | 0.00 in (2008) |
| December 11 | 61.0°F (2025) | -16.1°F (2009) | 0.03 in (2018) |
| December 12 | 59.0°F (2025) | 5.0°F (2011) | 0.09 in (2020) |
| December 13 | 61.0°F (2014) | 5.0°F (2016) | 0.22 in (2012) |
| December 14 | 54.0°F (2025) | -9.9°F (2008) | 0.19 in (2015) |
| December 15 | 62.1°F (2025) | -17.0°F (2008) | 0.20 in (2016) |
| December 16 | 63.0°F (2025) | -20.9°F (2008) | 0.13 in (2016) |
| December 17 | 55.9°F (2025) | -22.0°F (2008) | 0.13 in (2014) |
| December 18 | 54.0°F (2025) | -29.9°F (2016) | 0.00 in (2008) |
| December 19 | 52.0°F (2018) | -18.0°F (2016) | 0.10 in (2013) |
| December 20 | 54.0°F (2025) | -23.1°F (2008) | 1.00 in (2010) |
| December 21 | 55.0°F (2020) | -25.1°F (2008) | 0.10 in (2013) |
| December 22 | 55.9°F (2020) | -27.0°F (2022) | 0.13 in (2025) |
| December 23 | 51.1°F (2023) | -38.9°F (2022) | 0.14 in (2023) |
| December 24 | 51.1°F (2019) | -31.0°F (2022) | 0.05 in (2022) |
| December 25 | 57.9°F (2025) | -23.1°F (2017) | 0.05 in (2016) |
| December 26 | 57.9°F (2025) | -22.0°F (2017) | 0.48 in (2019) |
| December 27 | 52.0°F (2025) | -11.9°F (2017) | 0.24 in (2021) |
| December 28 | 48.9°F (2022) | -16.1°F (2021) | 0.06 in (2022) |
| December 29 | 52.0°F (2011) | -20.9°F (2021) | 0.05 in (2014) |
| December 30 | 48.9°F (2011) | -14.1°F (2021) | 0.15 in (2010) |
| December 31 | 44.1°F (2011) | -16.1°F (2014) | 0.07 in (2018) |