January weather in Rock Island, WA
The average temperature in Rock Island in January is 28.9°F (24.1°F–33.6°F). Average precipitation: 1.02 inches.
January is a winter month in Rock Island, and is cooler than the annual average of 51.2°F. Daily temperatures swing about 9.5°F between overnight low and afternoon high. Expect about 9 days with precipitation. Daylight averages about 8h 40m. For travel, January is cold.
Avg High
33.6°F
Avg Low
24.1°F
Precipitation
1.02 in
Daylight
8h 40m
January records in Rock Island
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| January 1 | 51.1°F (2020) | -9.9°F (1979) | 0.32 in (2005) |
| January 2 | 48.0°F (2007) | -2.0°F (1969) | 0.23 in (2003) |
| January 3 | 51.1°F (1963) | -0.9°F (1993) | 0.44 in (2025) |
| January 4 | 51.1°F (1984) | -7.1°F (2004) | 0.46 in (2008) |
| January 5 | 50.0°F (1962) | -8.0°F (2004) | 0.47 in (1966) |
| January 6 | 50.0°F (2009) | -9.9°F (1982) | 0.80 in (2022) |
| January 7 | 54.0°F (1983) | -9.9°F (1993) | 0.29 in (1975) |
| January 8 | 52.0°F (2009) | -0.9°F (1974) | 0.27 in (1995) |
| January 9 | 48.0°F (1983) | -2.9°F (1974) | 0.51 in (1990) |
| January 10 | 54.0°F (1983) | 0.0°F (1974) | 0.48 in (1979) |
| January 11 | 53.1°F (2014) | -0.9°F (1974) | 0.43 in (2018) |
| January 12 | 53.1°F (1999) | -6.9°F (2024) | 0.38 in (2023) |
| January 13 | 55.0°F (1991) | -9.8°F (2024) | 0.30 in (1980) |
| January 14 | 57.0°F (2011) | -3.8°F (2024) | 0.52 in (1968) |
| January 15 | 53.1°F (1974) | -1.8°F (2024) | 0.39 in (1974) |
| January 16 | 55.0°F (1994) | 1.2°F (2024) | 0.52 in (1971) |
| January 17 | 54.0°F (2011) | 7.0°F (1984) | 0.76 in (1998) |
| January 18 | 53.1°F (2015) | 5.0°F (1962) | 0.58 in (1974) |
| January 19 | 48.9°F (1994) | -0.9°F (1962) | 0.43 in (2016) |
| January 20 | 52.0°F (1967) | -2.0°F (1962) | 0.34 in (1999) |
| January 21 | 48.0°F (2011) | -0.9°F (1962) | 0.39 in (2003) |
| January 22 | 50.0°F (2011) | -6.0°F (1969) | 0.67 in (1970) |
| January 23 | 61.0°F (2004) | -7.1°F (1969) | 0.58 in (1965) |
| January 24 | 68.0°F (2004) | -2.0°F (1969) | 0.38 in (1964) |
| January 25 | 55.9°F (1992) | 3.9°F (2008) | 0.25 in (1983) |
| January 26 | 52.0°F (1962) | -4.0°F (1972) | 0.55 in (1983) |
| January 27 | 54.0°F (1962) | -5.1°F (1969) | 0.36 in (2021) |
| January 28 | 57.0°F (1984) | -8.0°F (1972) | 0.50 in (1981) |
| January 29 | 53.1°F (1974) | -9.0°F (1969) | 0.39 in (1967) |
| January 30 | 57.9°F (1989) | -11.9°F (1996) | 0.28 in (1995) |
| January 31 | 60.1°F (1971) | -9.0°F (1996) | 0.50 in (1963) |