January weather in Dayton, OR
The average temperature in Dayton in January is 41.3°F (35.2°F–47.3°F). Average precipitation: 5.51 inches.
January is a winter month in Dayton, and is cooler than the annual average of 52.9°F. Daily temperatures swing about 12.1°F between overnight low and afternoon high. Expect about 19 days with precipitation. Daylight averages about 8h 55m. For travel, January is a wet month.
Avg High
47.3°F
Avg Low
35.2°F
Precipitation
5.51 in
Daylight
8h 55m
January records in Dayton
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| January 1 | 55.0°F (2021) | 24.3°F (2022) | 1.76 in (2009) |
| January 2 | 57.9°F (2007) | 24.3°F (2015) | 1.27 in (2007) |
| January 3 | 55.9°F (2020) | 24.3°F (2011) | 1.75 in (2022) |
| January 4 | 55.9°F (2003) | 22.1°F (2011) | 0.58 in (2000) |
| January 5 | 57.0°F (2001) | 19.0°F (2004) | 0.67 in (2007) |
| January 6 | 60.1°F (2002) | 15.3°F (2017) | 1.24 in (2006) |
| January 7 | 60.1°F (2002) | 24.3°F (2017) | 0.91 in (2002) |
| January 8 | 55.9°F (2002) | 27.0°F (2003) | 0.62 in (2023) |
| January 9 | 54.0°F (2006) | 28.2°F (2020) | 0.86 in (2024) |
| January 10 | 57.0°F (2019) | 29.1°F (2011) | 0.64 in (2020) |
| January 11 | 57.0°F (2022) | 26.2°F (2013) | 1.08 in (2018) |
| January 12 | 60.1°F (2021) | 17.2°F (2017) | 2.46 in (2021) |
| January 13 | 64.0°F (2021) | 11.1°F (2017) | 0.77 in (2011) |
| January 14 | 59.0°F (2018) | 14.2°F (2017) | 0.43 in (1999) |
| January 15 | 59.0°F (2026) | 12.2°F (2017) | 0.90 in (2011) |
| January 16 | 57.9°F (2026) | 18.1°F (2024) | 1.02 in (2011) |
| January 17 | 60.1°F (2005) | 23.2°F (2009) | 1.92 in (2015) |
| January 18 | 64.9°F (2005) | 28.2°F (2013) | 1.37 in (2019) |
| January 19 | 60.1°F (2005) | 23.2°F (2025) | 1.76 in (2012) |
| January 20 | 57.0°F (2005) | 23.0°F (2026) | 0.95 in (2002) |
| January 21 | 55.9°F (2010) | 23.2°F (2009) | 0.55 in (2024) |
| January 22 | 57.9°F (2016) | 22.1°F (2025) | 0.79 in (1999) |
| January 23 | 59.0°F (2003) | 23.2°F (2025) | 0.66 in (2018) |
| January 24 | 62.1°F (2015) | 24.1°F (2026) | 1.21 in (2012) |
| January 25 | 61.0°F (2003) | 19.0°F (2026) | 1.16 in (2002) |
| January 26 | 59.0°F (2003) | 24.3°F (2008) | 0.55 in (2024) |
| January 27 | 63.0°F (2024) | 23.2°F (2025) | 0.89 in (2024) |
| January 28 | 64.0°F (2024) | 21.2°F (2025) | 1.31 in (2004) |
| January 29 | 57.9°F (2015) | 20.1°F (2025) | 1.03 in (2003) |
| January 30 | 57.9°F (2003) | 24.3°F (2023) | 0.66 in (2003) |
| January 31 | 61.0°F (2020) | 23.2°F (2023) | 1.72 in (2003) |