January weather in Forest Grove, OR
The average temperature in Forest Grove in January is 38.8°F (32.6°F–45.0°F). Average precipitation: 7.19 inches. Average snowfall is 0.6 inches.
January is a winter month in Forest Grove, and is cooler than the annual average of 52.1°F. Daily temperatures swing about 12.4°F between overnight low and afternoon high. Expect about 19 days with precipitation. Daylight averages about 8h 53m. For travel, January is a wet month.
Avg High
45.0°F
Avg Low
32.6°F
Precipitation
7.19 in
Snow
0.6 in
January records in Forest Grove
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| January 1 | 59.0°F (1997) | -0.9°F (1979) | 1.63 in (1948) |
| January 2 | 61.0°F (1997) | 5.0°F (1979) | 3.23 in (2009) |
| January 3 | 57.9°F (1903) | 5.0°F (1950) | 3.52 in (1907) |
| January 4 | 60.1°F (1989) | 10.0°F (1924) | 2.21 in (1956) |
| January 5 | 61.0°F (2024) | 12.9°F (1924) | 1.33 in (1895) |
| January 6 | 59.0°F (2003) | 6.1°F (1979) | 1.85 in (1950) |
| January 7 | 60.1°F (2003) | 7.0°F (1937) | 2.90 in (2002) |
| January 8 | 59.0°F (1900) | 5.0°F (1937) | 1.67 in (1959) |
| January 9 | 57.9°F (1953) | 1.9°F (1909) | 1.95 in (1968) |
| January 10 | 57.9°F (1990) | 8.1°F (1949) | 1.78 in (2006) |
| January 11 | 57.0°F (1902) | -2.9°F (1909) | 2.05 in (1972) |
| January 12 | 57.9°F (1953) | -11.0°F (1909) | 6.10 in (1912) |
| January 13 | 59.0°F (2002) | -2.9°F (1909) | 2.44 in (2016) |
| January 14 | 61.0°F (2018) | 1.0°F (1909) | 1.91 in (1988) |
| January 15 | 60.1°F (1958) | 3.9°F (1907) | 2.92 in (1974) |
| January 16 | 59.0°F (2026) | 7.0°F (1907) | 2.20 in (1974) |
| January 17 | 59.0°F (1975) | 6.1°F (1950) | 2.32 in (1910) |
| January 18 | 62.1°F (1989) | 6.1°F (1943) | 5.40 in (1911) |
| January 19 | 66.9°F (2005) | 12.9°F (1935) | 2.11 in (1909) |
| January 20 | 59.0°F (1977) | 1.0°F (1930) | 2.28 in (1972) |
| January 21 | 60.1°F (1968) | -8.0°F (1930) | 1.48 in (1951) |
| January 22 | 59.0°F (1968) | 3.0°F (1927) | 1.68 in (2002) |
| January 23 | 59.0°F (1968) | 7.0°F (1949) | 1.83 in (1919) |
| January 24 | 61.0°F (1935) | 3.0°F (1949) | 1.70 in (1903) |
| January 25 | 59.0°F (1984) | 0.0°F (1930) | 1.94 in (2002) |
| January 26 | 63.0°F (2003) | 5.0°F (1957) | 1.10 in (1933) |
| January 27 | 60.1°F (1931) | 5.0°F (1957) | 1.44 in (1923) |
| January 28 | 62.1°F (1931) | 5.0°F (1957) | 2.23 in (2020) |
| January 29 | 61.0°F (2024) | 8.1°F (1902) | 1.63 in (1967) |
| January 30 | 62.1°F (1984) | 3.9°F (1950) | 1.84 in (2003) |
| January 31 | 63.0°F (1976) | -18.0°F (1950) | 1.85 in (1997) |