January weather in Plymouth, CA
The average temperature in Plymouth in January is 47.0°F (39.2°F–54.8°F). Average precipitation: 6.06 inches.
January is a winter month in Plymouth, and is cooler than the annual average of 61°F. Daily temperatures swing about 15.6°F between overnight low and afternoon high. Daylight averages about 9h 36m. For travel, January is a wet month.
Avg High
54.8°F
Avg Low
39.2°F
Precipitation
6.06 in
Daylight
9h 36m
January records in Plymouth
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| January 1 | 64.9°F (2012) | 25.0°F (2009) | 1.58 in (1955) |
| January 2 | 66.9°F (2018) | 27.0°F (2009) | 1.12 in (1944) |
| January 3 | 66.0°F (2024) | 30.9°F (2009) | 1.46 in (2002) |
| January 4 | 64.9°F (2001) | 26.1°F (2009) | 0.73 in (1946) |
| January 5 | 64.0°F (2001) | 28.0°F (2009) | 1.86 in (2008) |
| January 6 | 66.9°F (2012) | 23.0°F (2007) | 1.68 in (1978) |
| January 7 | 66.9°F (2006) | 24.1°F (2007) | 1.12 in (1974) |
| January 8 | 69.1°F (2015) | 25.0°F (1999) | 1.00 in (2017) |
| January 9 | 66.9°F (2004) | 25.0°F (2009) | 3.10 in (2018) |
| January 10 | 64.0°F (2007) | 28.0°F (2009) | 3.10 in (2019) |
| January 11 | 63.0°F (2023) | 26.1°F (2007) | 2.55 in (2017) |
| January 12 | 66.9°F (2012) | 24.1°F (2007) | 2.22 in (1973) |
| January 13 | 64.9°F (2010) | 24.1°F (2007) | 1.03 in (1969) |
| January 14 | 66.9°F (2006) | 25.0°F (2007) | 2.20 in (1969) |
| January 15 | 66.0°F (2012) | 26.1°F (2012) | 1.32 in (1978) |
| January 16 | 69.1°F (2018) | 26.1°F (2017) | 1.69 in (1973) |
| January 17 | 70.0°F (2014) | 26.1°F (2017) | 2.15 in (1950) |
| January 18 | 71.1°F (2014) | 28.9°F (2002) | 1.30 in (2000) |
| January 19 | 73.0°F (2021) | 33.1°F (2007) | 2.00 in (1969) |
| January 20 | 71.1°F (2014) | 32.0°F (2002) | 1.45 in (1957) |
| January 21 | 70.0°F (2014) | 25.0°F (2002) | 2.90 in (2012) |
| January 22 | 66.9°F (2014) | 30.0°F (2002) | 3.13 in (1967) |
| January 23 | 66.0°F (2014) | 28.9°F (2002) | 3.70 in (2017) |
| January 24 | 68.0°F (2013) | 30.9°F (2002) | 2.55 in (2000) |
| January 25 | 66.0°F (2005) | 33.1°F (2008) | 2.02 in (2000) |
| January 26 | 75.9°F (2014) | 30.0°F (2021) | 1.43 in (1960) |
| January 27 | 66.9°F (2015) | 28.0°F (2009) | 0.95 in (2005) |
| January 28 | 64.0°F (2011) | 26.1°F (2002) | 2.14 in (2021) |
| January 29 | 68.0°F (2014) | 26.1°F (2002) | 1.49 in (2021) |
| January 30 | 72.0°F (2024) | 28.0°F (2002) | 2.24 in (1966) |
| January 31 | 82.0°F (2017) | 33.1°F (2009) | 1.96 in (1968) |