January weather in Hamilton, WA
The average temperature in Hamilton in January is 40.3°F (34.7°F–46.0°F). Average precipitation: 6.18 inches. Average snowfall is 0.6 inches.
January is a winter month in Hamilton, and is cooler than the annual average of 51.3°F. Daily temperatures swing about 11.3°F between overnight low and afternoon high. Expect about 20 days with precipitation. Daylight averages about 8h 31m. For travel, January is a wet month.
Avg High
46.0°F
Avg Low
34.7°F
Precipitation
6.18 in
Snow
0.6 in
January records in Hamilton
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| January 1 | 61.0°F (1918) | 8.1°F (1952) | 1.16 in (1950) |
| January 2 | 59.0°F (1900) | 9.0°F (1950) | 1.75 in (1913) |
| January 3 | 60.1°F (1962) | 8.1°F (1950) | 1.88 in (1915) |
| January 4 | 63.0°F (2020) | 6.1°F (1950) | 1.41 in (1984) |
| January 5 | 62.1°F (2001) | 10.0°F (1909) | 3.21 in (2015) |
| January 6 | 60.1°F (1914) | 9.0°F (1909) | 1.35 in (2006) |
| January 7 | 60.1°F (1945) | 5.0°F (1909) | 2.57 in (2009) |
| January 8 | 61.0°F (2002) | 6.1°F (1909) | 1.70 in (2009) |
| January 9 | 61.0°F (1928) | 6.1°F (1909) | 1.86 in (1971) |
| January 10 | 61.0°F (1941) | 8.1°F (1909) | 2.64 in (1983) |
| January 11 | 66.0°F (1986) | 3.9°F (1909) | 1.56 in (1992) |
| January 12 | 63.0°F (1983) | 8.1°F (1909) | 1.56 in (1900) |
| January 13 | 59.0°F (2021) | 0.0°F (1911) | 1.73 in (1927) |
| January 14 | 62.1°F (1986) | -0.9°F (1911) | 1.25 in (1996) |
| January 15 | 62.1°F (1973) | 8.1°F (1907) | 1.75 in (1939) |
| January 16 | 61.0°F (2018) | 12.0°F (1916) | 1.37 in (1920) |
| January 17 | 59.0°F (1923) | 6.1°F (1930) | 1.95 in (1975) |
| January 18 | 59.0°F (1977) | 0.0°F (1950) | 1.99 in (1920) |
| January 19 | 64.9°F (2005) | 3.0°F (1937) | 1.06 in (1934) |
| January 20 | 66.0°F (2005) | 6.1°F (1935) | 1.32 in (1997) |
| January 21 | 63.0°F (1981) | 7.0°F (1930) | 2.58 in (1935) |
| January 22 | 62.1°F (1931) | 6.1°F (1943) | 3.23 in (1935) |
| January 23 | 61.0°F (1931) | 7.0°F (1957) | 1.99 in (1971) |
| January 24 | 62.1°F (1935) | 3.9°F (1957) | 2.31 in (1974) |
| January 25 | 63.0°F (1935) | 1.0°F (1950) | 2.28 in (1993) |
| January 26 | 61.0°F (2003) | -2.0°F (1957) | 2.45 in (1971) |
| January 27 | 68.0°F (2015) | 3.0°F (1957) | 1.32 in (1925) |
| January 28 | 66.0°F (1931) | 1.9°F (1957) | 1.20 in (1965) |
| January 29 | 66.9°F (1931) | 7.0°F (1950) | 1.99 in (1965) |
| January 30 | 66.0°F (2024) | 3.9°F (1929) | 2.34 in (1971) |
| January 31 | 66.0°F (1935) | 1.9°F (1950) | 1.24 in (1971) |