January weather in Mill Valley, CA
The average temperature in Mill Valley in January is °F (°F–°F). Average precipitation: 6.62 inches.
January is a winter month in Mill Valley, and is cooler than the annual average of 0°F. Expect about 14 days with precipitation. Daylight averages about 9h 39m.
Avg High
°F
Avg Low
°F
Precipitation
6.62 in
Daylight
9h 39m
January records in Mill Valley
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| January 1 | 64.9°F (2014) | 32.0°F (2016) | 1.90 in (2004) |
| January 2 | 69.1°F (2014) | 32.0°F (2015) | 2.15 in (1977) |
| January 3 | 70.0°F (2014) | 34.0°F (2013) | 2.17 in (1974) |
| January 4 | 71.1°F (2014) | 36.0°F (2015) | 2.49 in (1982) |
| January 5 | 71.1°F (2014) | 36.0°F (2013) | 3.55 in (1966) |
| January 6 | 71.1°F (2014) | 32.0°F (2017) | 2.17 in (1975) |
| January 7 | 60.1°F (2013) | 36.0°F (2013) | 1.95 in (1993) |
| January 8 | 73.0°F (2014) | 39.0°F (2016) | 2.65 in (2001) |
| January 9 | 73.0°F (2014) | 41.0°F (2013) | 2.25 in (2023) |
| January 10 | 66.0°F (2014) | 41.0°F (2014) | 2.72 in (2017) |
| January 11 | 64.9°F (2014) | 41.0°F (2014) | 3.11 in (1973) |
| January 12 | 61.0°F (2014) | 30.9°F (2013) | 3.15 in (1973) |
| January 13 | 68.0°F (2015) | 27.0°F (2013) | 3.19 in (1993) |
| January 14 | 61.0°F (2015) | 28.9°F (2013) | 4.30 in (2003) |
| January 15 | 73.0°F (2014) | 30.9°F (2013) | 5.84 in (1956) |
| January 16 | 66.0°F (2013) | 36.0°F (2017) | 2.43 in (1986) |
| January 17 | 73.9°F (2014) | 37.0°F (2017) | 4.58 in (1950) |
| January 18 | 75.0°F (2014) | 39.9°F (2017) | 2.20 in (1950) |
| January 19 | 66.0°F (2015) | 48.0°F (2015) | 2.10 in (2010) |
| January 20 | 73.9°F (2014) | 43.0°F (2015) | 2.15 in (2012) |
| January 21 | 73.9°F (2014) | 42.1°F (2013) | 6.25 in (1970) |
| January 22 | 73.0°F (2014) | 39.0°F (2014) | 4.00 in (1951) |
| January 23 | 68.0°F (2015) | 41.0°F (2015) | 2.24 in (1942) |
| January 24 | 71.1°F (2014) | 37.0°F (2017) | 2.99 in (1958) |
| January 25 | 75.0°F (2014) | 35.1°F (2017) | 2.13 in (2008) |
| January 26 | 75.0°F (2014) | 39.0°F (2017) | 2.82 in (2008) |
| January 27 | 70.0°F (2014) | 37.9°F (2017) | 3.30 in (1967) |
| January 28 | 66.0°F (2015) | 39.9°F (2017) | 2.20 in (1950) |
| January 29 | 70.0°F (2015) | 37.9°F (2013) | 1.86 in (1988) |
| January 30 | 66.0°F (2017) | 37.9°F (2013) | 2.80 in (1963) |
| January 31 | 75.0°F (2015) | 37.0°F (2014) | 2.48 in (1963) |