January weather in Sumner, WA
The average temperature in Sumner in January is 39.7°F (33.3°F–46.1°F). Average precipitation: 6.12 inches. Average snowfall is 1.5 inches.
January is a winter month in Sumner, and is cooler than the annual average of 50.5°F. Daily temperatures swing about 12.8°F between overnight low and afternoon high. Expect about 20 days with precipitation. Daylight averages about 8h 41m. For travel, January is a wet month.
Avg High
46.1°F
Avg Low
33.3°F
Precipitation
6.12 in
Snow
1.5 in
January records in Sumner
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| January 1 | 61.0°F (1964) | 3.0°F (1979) | 1.36 in (1964) |
| January 2 | 57.0°F (2007) | 3.0°F (1979) | 1.10 in (1997) |
| January 3 | 57.9°F (2007) | 3.9°F (1959) | 1.53 in (2007) |
| January 4 | 61.0°F (1984) | 5.0°F (1959) | 0.96 in (1967) |
| January 5 | 64.0°F (1984) | 10.9°F (1959) | 1.83 in (1983) |
| January 6 | 61.0°F (2020) | 8.1°F (1982) | 1.63 in (1954) |
| January 7 | 60.1°F (2002) | 9.0°F (1973) | 2.50 in (2009) |
| January 8 | 61.0°F (1986) | 5.0°F (1973) | 2.16 in (2009) |
| January 9 | 60.1°F (2002) | 6.1°F (1973) | 2.40 in (1990) |
| January 10 | 60.1°F (2002) | 9.0°F (1949) | 1.65 in (1990) |
| January 11 | 60.1°F (1961) | 5.0°F (1963) | 1.35 in (2006) |
| January 12 | 59.0°F (1961) | 5.0°F (1963) | 1.68 in (2021) |
| January 13 | 63.0°F (2022) | 9.0°F (1963) | 1.06 in (2011) |
| January 14 | 57.0°F (1995) | 5.0°F (1950) | 1.29 in (1975) |
| January 15 | 60.1°F (1973) | 5.0°F (1950) | 1.11 in (1988) |
| January 16 | 60.1°F (2018) | 12.9°F (2024) | 1.08 in (1986) |
| January 17 | 60.1°F (1944) | 7.0°F (1943) | 1.33 in (1958) |
| January 18 | 61.0°F (1986) | 0.0°F (1950) | 2.37 in (2005) |
| January 19 | 62.1°F (2005) | 5.0°F (1950) | 1.60 in (1986) |
| January 20 | 66.0°F (2005) | 9.0°F (1954) | 1.83 in (1950) |
| January 21 | 66.0°F (2005) | 7.0°F (1962) | 1.21 in (1972) |
| January 22 | 63.0°F (1981) | 6.1°F (1943) | 1.95 in (1954) |
| January 23 | 57.0°F (1942) | 10.0°F (1943) | 0.89 in (1959) |
| January 24 | 57.9°F (1953) | 8.1°F (1949) | 1.38 in (1958) |
| January 25 | 57.0°F (1998) | 3.0°F (1950) | 1.99 in (1964) |
| January 26 | 59.0°F (2015) | 1.9°F (1957) | 1.12 in (1971) |
| January 27 | 73.9°F (1986) | 1.0°F (1972) | 1.36 in (1965) |
| January 28 | 60.1°F (2016) | 3.9°F (1972) | 1.48 in (1992) |
| January 29 | 62.1°F (1960) | 3.9°F (1951) | 1.34 in (1965) |
| January 30 | 63.0°F (1960) | 5.0°F (1950) | 1.75 in (2006) |
| January 31 | 60.1°F (1992) | 1.9°F (1950) | 1.17 in (2003) |