December weather in Kirby, WY
The average temperature in Kirby in December is 16.4°F (0.3°F–32.4°F). Average precipitation: 0.51 inches. Average snowfall is 8.4 inches.
December is a winter month in Kirby, and is cooler than the annual average of 42.6°F. Daily temperatures swing about 32.1°F between overnight low and afternoon high. Expect about 4 days with precipitation. Daylight averages about 8h 44m. For travel, December is cold.
Avg High
32.4°F
Avg Low
0.3°F
Precipitation
0.51 in
Snow
8.4 in
December records in Kirby
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 59.0°F (2012) | -17.0°F (2010) | 0.29 in (2011) |
| December 2 | 60.1°F (2012) | -15.0°F (2007) | 0.60 in (1997) |
| December 3 | 64.0°F (2012) | -20.0°F (2022) | 0.40 in (1992) |
| December 4 | 57.9°F (2017) | -18.9°F (2022) | 0.10 in (2017) |
| December 5 | 55.0°F (2021) | -20.9°F (2013) | 0.28 in (2000) |
| December 6 | 54.0°F (2024) | -23.1°F (2013) | 0.14 in (2005) |
| December 7 | 55.0°F (2024) | -32.1°F (2005) | 0.10 in (2005) |
| December 8 | 55.0°F (2024) | -31.0°F (2005) | 0.20 in (2007) |
| December 9 | 55.9°F (2020) | -36.9°F (2009) | 0.28 in (1997) |
| December 10 | 60.1°F (2020) | -33.0°F (2009) | 0.10 in (2015) |
| December 11 | 53.1°F (2014) | -33.0°F (2009) | 0.08 in (2020) |
| December 12 | 53.1°F (2014) | -20.0°F (2009) | 0.28 in (1992) |
| December 13 | 57.9°F (2014) | -11.0°F (2020) | 0.28 in (2005) |
| December 14 | 60.1°F (2014) | -18.9°F (2008) | 0.11 in (2014) |
| December 15 | 57.9°F (2021) | -24.0°F (2008) | 1.36 in (2014) |
| December 16 | 60.1°F (2006) | -24.0°F (2008) | 0.09 in (2015) |
| December 17 | 55.9°F (2025) | -29.0°F (2016) | 0.35 in (2017) |
| December 18 | 61.0°F (2025) | -29.9°F (2016) | 0.04 in (2025) |
| December 19 | 61.0°F (2025) | -25.1°F (2016) | 0.38 in (1997) |
| December 20 | 59.0°F (2025) | -17.0°F (2022) | 0.15 in (1991) |
| December 21 | 53.1°F (2024) | -24.0°F (2008) | 0.20 in (1993) |
| December 22 | 55.0°F (2024) | -47.0°F (2022) | 0.26 in (2011) |
| December 23 | 62.1°F (2025) | -47.9°F (2022) | 0.14 in (2014) |
| December 24 | 60.1°F (2025) | -27.0°F (2017) | 0.15 in (1997) |
| December 25 | 64.9°F (2025) | -25.1°F (2017) | 0.09 in (2021) |
| December 26 | 62.1°F (2025) | -20.0°F (2017) | 0.63 in (2014) |
| December 27 | 54.0°F (2025) | -20.0°F (2008) | 0.14 in (2025) |
| December 28 | 48.0°F (2022) | -18.9°F (2014) | 0.14 in (2020) |
| December 29 | 46.0°F (2008) | -17.0°F (2012) | 0.50 in (2006) |
| December 30 | 52.0°F (2008) | -17.0°F (2012) | 0.10 in (2010) |
| December 31 | 50.0°F (2011) | -38.0°F (2014) | 0.31 in (2018) |