January weather in Dayton, WY
The average temperature in Dayton in January is 23.1°F (10.2°F–35.9°F). Average precipitation: 0.82 inches. Average snowfall is 10.8 inches.
January is a winter month in Dayton, and is cooler than the annual average of 43.9°F. Daily temperatures swing about 25.7°F between overnight low and afternoon high. Expect about 7 days with precipitation. Daylight averages about 8h 58m. For travel, January is cold.
Avg High
35.9°F
Avg Low
10.2°F
Precipitation
0.82 in
Snow
10.8 in
January records in Dayton
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| January 1 | 54.0°F (2026) | -23.1°F (2018) | 0.79 in (2014) |
| January 2 | 55.0°F (2007) | -26.0°F (2019) | 0.19 in (2009) |
| January 3 | 59.0°F (2012) | -20.9°F (2017) | 0.21 in (1996) |
| January 4 | 62.1°F (2020) | -20.9°F (2017) | 0.38 in (2022) |
| January 5 | 66.0°F (2012) | -15.0°F (2017) | 0.21 in (2010) |
| January 6 | 53.1°F (2012) | -20.9°F (2010) | 0.15 in (1999) |
| January 7 | 57.0°F (2011) | -16.1°F (2010) | 0.25 in (2009) |
| January 8 | 59.0°F (2009) | -16.1°F (2017) | 0.18 in (2015) |
| January 9 | 55.9°F (2012) | -11.0°F (2015) | 0.46 in (1997) |
| January 10 | 57.9°F (2007) | -11.9°F (2015) | 0.33 in (2011) |
| January 11 | 52.0°F (2026) | -18.9°F (2007) | 0.71 in (2009) |
| January 12 | 57.0°F (2014) | -34.1°F (2024) | 1.15 in (2000) |
| January 13 | 63.0°F (2021) | -35.0°F (2024) | 0.23 in (2009) |
| January 14 | 63.0°F (2021) | -25.1°F (2024) | 0.30 in (2014) |
| January 15 | 57.0°F (2010) | -29.9°F (2024) | 0.46 in (1953) |
| January 16 | 55.0°F (2011) | -20.0°F (2018) | 0.35 in (1995) |
| January 17 | 57.9°F (2022) | -18.9°F (2018) | 0.52 in (2021) |
| January 18 | 55.9°F (2009) | -11.9°F (2024) | 0.29 in (1994) |
| January 19 | 60.1°F (2013) | -13.0°F (2025) | 0.24 in (2011) |
| January 20 | 60.1°F (2009) | -20.9°F (2025) | 0.20 in (2022) |
| January 21 | 55.0°F (2009) | -26.0°F (2008) | 0.19 in (2021) |
| January 22 | 50.0°F (2009) | -17.0°F (2008) | 0.21 in (2003) |
| January 23 | 55.9°F (2022) | -16.1°F (2026) | 0.44 in (2011) |
| January 24 | 51.1°F (2024) | -11.0°F (2019) | 0.25 in (1956) |
| January 25 | 57.0°F (2013) | -17.0°F (2025) | 0.39 in (2023) |
| January 26 | 63.0°F (2014) | -18.0°F (2009) | 0.11 in (2022) |
| January 27 | 68.0°F (2015) | -16.1°F (2009) | 0.35 in (1955) |
| January 28 | 64.9°F (2024) | -15.0°F (2008) | 1.50 in (2023) |
| January 29 | 59.0°F (2024) | -14.1°F (2008) | 0.18 in (2020) |
| January 30 | 66.0°F (2024) | -6.0°F (2007) | 0.21 in (1994) |
| January 31 | 64.9°F (2024) | -6.0°F (2011) | 0.53 in (2013) |