January weather in Monmouth, OR
The average temperature in Monmouth in January is 40.9°F (35.2°F–46.6°F). Average precipitation: 7.48 inches.
January is a winter month in Monmouth, and is cooler than the annual average of 53.1°F. Daily temperatures swing about 11.4°F between overnight low and afternoon high. Daylight averages about 8h 58m. For travel, January is a wet month.
Avg High
46.6°F
Avg Low
35.2°F
Precipitation
7.48 in
Daylight
8h 58m
January records in Monmouth
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| January 1 | 90.0°F (1949) | 16.0°F (1979) | 2.15 in (1936) |
| January 2 | 57.0°F (1996) | 12.9°F (1950) | 1.87 in (1997) |
| January 3 | 60.1°F (1984) | 9.0°F (1950) | 1.90 in (1954) |
| January 4 | 64.9°F (1984) | 17.1°F (1947) | 3.33 in (1956) |
| January 5 | 60.1°F (1969) | 16.0°F (1947) | 1.88 in (1975) |
| January 6 | 57.9°F (1962) | 12.0°F (2017) | 2.07 in (1950) |
| January 7 | 59.0°F (2002) | 5.0°F (1937) | 2.10 in (1990) |
| January 8 | 60.1°F (1962) | 6.1°F (1937) | 2.04 in (1953) |
| January 9 | 57.9°F (1990) | 7.0°F (1974) | 2.18 in (1995) |
| January 10 | 57.0°F (1961) | 9.0°F (1949) | 2.11 in (2006) |
| January 11 | 60.1°F (1951) | 10.0°F (1951) | 2.49 in (1972) |
| January 12 | 57.0°F (1991) | 10.0°F (1937) | 2.55 in (2021) |
| January 13 | 57.9°F (1974) | 8.1°F (1937) | 1.63 in (1998) |
| January 14 | 59.0°F (1991) | 15.1°F (2024) | 2.90 in (1988) |
| January 15 | 63.0°F (1958) | 12.9°F (1947) | 3.91 in (1974) |
| January 16 | 60.1°F (1958) | 16.0°F (1947) | 2.28 in (1974) |
| January 17 | 62.1°F (1975) | 17.1°F (1947) | 1.68 in (2006) |
| January 18 | 62.1°F (2005) | 7.0°F (1943) | 3.02 in (2012) |
| January 19 | 62.1°F (2005) | 6.1°F (1943) | 2.59 in (2012) |
| January 20 | 60.1°F (2005) | 10.9°F (1937) | 2.60 in (1972) |
| January 21 | 60.1°F (1981) | 10.0°F (1937) | 1.50 in (1951) |
| January 22 | 60.1°F (1970) | 12.0°F (1962) | 1.56 in (1946) |
| January 23 | 59.0°F (2003) | 9.0°F (1962) | 1.72 in (1965) |
| January 24 | 90.0°F (1949) | 5.0°F (1943) | 1.88 in (1965) |
| January 25 | 62.1°F (1993) | 0.0°F (1951) | 1.80 in (2002) |
| January 26 | 60.1°F (1983) | 14.0°F (1957) | 1.43 in (1970) |
| January 27 | 61.0°F (2024) | 9.0°F (1957) | 2.45 in (1954) |
| January 28 | 63.0°F (2024) | 5.0°F (1969) | 1.61 in (2020) |
| January 29 | 63.0°F (2024) | 10.9°F (1950) | 1.31 in (1967) |
| January 30 | 60.1°F (1940) | 7.0°F (1950) | 1.18 in (1958) |
| January 31 | 62.1°F (1940) | -11.0°F (1950) | 1.98 in (1987) |