January weather in Portland, OR
The average temperature in Portland in January is 42.1°F (37.3°F–46.9°F). Average precipitation: 6.36 inches. Average snowfall is 1.3 inches.
January is a winter month in Portland, and is cooler than the annual average of 54.8°F. Daily temperatures swing about 9.6°F between overnight low and afternoon high. Expect about 20 days with precipitation. Daylight averages about 8h 53m. For travel, January is a wet month.
Avg High
46.9°F
Avg Low
37.3°F
Precipitation
6.36 in
Snow
1.3 in
January records in Portland
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| January 1 | 60.1°F (1981) | 12.0°F (1979) | 1.81 in (2009) |
| January 2 | 57.0°F (1981) | 15.1°F (1979) | 1.91 in (2009) |
| January 3 | 61.0°F (1984) | 21.9°F (1979) | 2.11 in (2022) |
| January 4 | 61.0°F (1984) | 21.0°F (2004) | 0.92 in (1976) |
| January 5 | 57.0°F (2001) | 18.0°F (2004) | 0.89 in (2022) |
| January 6 | 57.0°F (2002) | 15.1°F (2004) | 6.00 in (2004) |
| January 7 | 60.1°F (2002) | 16.0°F (1974) | 1.21 in (2002) |
| January 8 | 55.0°F (1983) | 18.0°F (1974) | 0.73 in (2023) |
| January 9 | 60.1°F (1990) | 15.1°F (1974) | 1.57 in (1980) |
| January 10 | 55.9°F (2014) | 17.1°F (1974) | 0.77 in (2006) |
| January 11 | 57.0°F (2022) | 19.0°F (1974) | 1.42 in (2006) |
| January 12 | 61.0°F (2022) | 19.0°F (2024) | 2.02 in (2021) |
| January 13 | 57.9°F (1991) | 12.0°F (2024) | 1.33 in (1980) |
| January 14 | 57.9°F (1974) | 12.9°F (2024) | 1.78 in (1988) |
| January 15 | 57.9°F (1974) | 12.9°F (2024) | 2.52 in (1974) |
| January 16 | 59.0°F (1984) | 18.0°F (2024) | 1.63 in (1982) |
| January 17 | 59.0°F (1975) | 23.0°F (2024) | 2.30 in (1997) |
| January 18 | 64.9°F (2005) | 27.0°F (1984) | 1.48 in (2012) |
| January 19 | 64.0°F (2005) | 25.0°F (2013) | 2.22 in (2012) |
| January 20 | 57.9°F (1978) | 25.0°F (2013) | 1.05 in (1996) |
| January 21 | 61.0°F (2005) | 28.0°F (2013) | 0.69 in (2024) |
| January 22 | 57.0°F (2016) | 28.9°F (1979) | 1.20 in (1999) |
| January 23 | 59.0°F (2003) | 28.0°F (1979) | 1.34 in (1982) |
| January 24 | 61.0°F (2015) | 28.9°F (2026) | 0.86 in (2012) |
| January 25 | 60.1°F (1993) | 28.0°F (2026) | 1.85 in (1975) |
| January 26 | 61.0°F (2003) | 21.0°F (1980) | 0.82 in (1983) |
| January 27 | 61.0°F (2024) | 19.0°F (1980) | 1.53 in (2024) |
| January 28 | 60.1°F (2018) | 16.0°F (1980) | 1.18 in (1990) |
| January 29 | 61.0°F (1992) | 16.0°F (1980) | 1.08 in (2003) |
| January 30 | 62.1°F (1992) | 16.0°F (1996) | 1.50 in (1997) |
| January 31 | 60.1°F (1995) | 16.0°F (1996) | 2.52 in (2003) |