January weather in Grass Valley, CA
The average temperature in Grass Valley in January is 43.4°F (33.1°F–53.6°F). Average precipitation: 9.30 inches. Average snowfall is 0.7 inches.
January is a winter month in Grass Valley, and is cooler than the annual average of 56.1°F. Daily temperatures swing about 20.5°F between overnight low and afternoon high. Expect about 13 days with precipitation. Daylight averages about 9h 32m. For travel, January is a wet month.
Avg High
53.6°F
Avg Low
33.1°F
Precipitation
9.30 in
Snow
0.7 in
January records in Grass Valley
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| January 1 | 68.0°F (1981) | 18.0°F (1979) | 3.63 in (1997) |
| January 2 | 70.0°F (2012) | 18.0°F (1974) | 6.31 in (1997) |
| January 3 | 68.0°F (1996) | 19.0°F (1974) | 2.13 in (1977) |
| January 4 | 68.0°F (1969) | 19.9°F (1971) | 2.42 in (2017) |
| January 5 | 73.0°F (1984) | 21.0°F (1971) | 2.97 in (1978) |
| January 6 | 73.0°F (1969) | 19.9°F (1968) | 3.93 in (1978) |
| January 7 | 75.0°F (2003) | 18.0°F (1982) | 3.65 in (2019) |
| January 8 | 75.0°F (2003) | 19.0°F (1973) | 3.01 in (2017) |
| January 9 | 69.1°F (2015) | 19.9°F (1977) | 4.72 in (2017) |
| January 10 | 69.1°F (1986) | 21.0°F (1977) | 3.82 in (1995) |
| January 11 | 70.0°F (1983) | 21.9°F (2011) | 3.55 in (1979) |
| January 12 | 75.0°F (1983) | 19.9°F (2013) | 4.24 in (1973) |
| January 13 | 73.9°F (2009) | 18.0°F (2007) | 3.39 in (1990) |
| January 14 | 73.0°F (2009) | 18.0°F (2007) | 3.18 in (1995) |
| January 15 | 73.9°F (1975) | 18.0°F (2007) | 2.54 in (1978) |
| January 16 | 75.9°F (2009) | 19.9°F (1987) | 3.44 in (1973) |
| January 17 | 73.9°F (2021) | 19.0°F (2012) | 2.19 in (2019) |
| January 18 | 72.0°F (2026) | 21.0°F (2012) | 2.91 in (2016) |
| January 19 | 77.0°F (1975) | 21.9°F (1987) | 3.20 in (1969) |
| January 20 | 73.0°F (1975) | 23.0°F (1987) | 3.47 in (1969) |
| January 21 | 72.0°F (1975) | 24.1°F (1987) | 4.60 in (1967) |
| January 22 | 73.0°F (1975) | 21.0°F (1982) | 4.18 in (1967) |
| January 23 | 77.0°F (1968) | 23.0°F (1982) | 4.69 in (1997) |
| January 24 | 70.0°F (1968) | 23.0°F (2002) | 2.47 in (2000) |
| January 25 | 77.0°F (2015) | 25.0°F (1976) | 2.91 in (2000) |
| January 26 | 72.0°F (2015) | 19.0°F (1979) | 3.36 in (1997) |
| January 27 | 70.0°F (1986) | 21.0°F (1979) | 2.82 in (1983) |
| January 28 | 73.9°F (1971) | 19.9°F (1975) | 3.10 in (1981) |
| January 29 | 75.0°F (1984) | 15.1°F (1979) | 2.45 in (1967) |
| January 30 | 73.0°F (1971) | 19.0°F (1979) | 2.90 in (1968) |
| January 31 | 75.0°F (1971) | 17.1°F (1969) | 2.38 in (1967) |