January weather in San Luis Obispo, CA
The average temperature in San Luis Obispo in January is 52.8°F (40.6°F–65.0°F). Average precipitation: 3.86 inches.
January is a winter month in San Luis Obispo, and is cooler than the annual average of 59.7°F. Daily temperatures swing about 24.4°F between overnight low and afternoon high. Expect about 8 days with precipitation. Daylight averages about 9h 52m. For travel, January is a comfortable month to visit.
Avg High
65.0°F
Avg Low
40.6°F
Precipitation
3.86 in
Daylight
9h 52m
January records in San Luis Obispo
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| January 1 | 75.0°F (2001) | 27.1°F (2015) | 2.39 in (2006) |
| January 2 | 79.0°F (2014) | 30.2°F (2015) | 2.75 in (2006) |
| January 3 | 80.1°F (2001) | 29.1°F (2015) | 1.12 in (2026) |
| January 4 | 82.0°F (2001) | 31.1°F (2013) | 2.32 in (2017) |
| January 5 | 79.0°F (2012) | 30.9°F (1999) | 0.89 in (2016) |
| January 6 | 79.0°F (2015) | 30.9°F (2001) | 0.87 in (2016) |
| January 7 | 81.0°F (2015) | 32.0°F (2000) | 0.54 in (2017) |
| January 8 | 82.0°F (2007) | 34.0°F (1999) | 2.66 in (2005) |
| January 9 | 79.0°F (2007) | 30.0°F (1999) | 4.04 in (2023) |
| January 10 | 75.9°F (1999) | 33.1°F (1999) | 1.78 in (2001) |
| January 11 | 78.1°F (2009) | 30.2°F (2013) | 0.88 in (2001) |
| January 12 | 82.0°F (2009) | 31.1°F (2007) | 0.60 in (2017) |
| January 13 | 87.1°F (2009) | 30.2°F (2007) | 0.67 in (2010) |
| January 14 | 86.0°F (2009) | 21.2°F (2007) | 1.51 in (2023) |
| January 15 | 91.0°F (2021) | 24.3°F (2007) | 0.16 in (2023) |
| January 16 | 91.0°F (2014) | 30.2°F (2013) | 0.54 in (2000) |
| January 17 | 86.0°F (2014) | 28.9°F (2001) | 0.88 in (2019) |
| January 18 | 87.1°F (2014) | 28.2°F (2012) | 1.05 in (2010) |
| January 19 | 82.0°F (2009) | 28.2°F (2007) | 1.27 in (2016) |
| January 20 | 82.0°F (2009) | 30.9°F (2001) | 1.60 in (2017) |
| January 21 | 79.0°F (2014) | 32.0°F (2025) | 1.66 in (2012) |
| January 22 | 84.0°F (2014) | 29.1°F (2007) | 1.31 in (2008) |
| January 23 | 79.0°F (2025) | 29.1°F (2007) | 1.80 in (2012) |
| January 24 | 80.1°F (2015) | 30.2°F (2007) | 1.03 in (2008) |
| January 25 | 84.9°F (2015) | 30.0°F (2002) | 0.36 in (2001) |
| January 26 | 78.1°F (2011) | 31.1°F (2021) | 0.76 in (2010) |
| January 27 | 81.0°F (2024) | 33.1°F (2002) | 1.67 in (2021) |
| January 28 | 87.1°F (2018) | 30.0°F (2001) | 3.66 in (2021) |
| January 29 | 87.1°F (2018) | 28.0°F (2002) | 0.54 in (2021) |
| January 30 | 79.0°F (2017) | 30.0°F (2002) | 0.46 in (2000) |
| January 31 | 86.0°F (2018) | 28.9°F (2002) | 1.17 in (2016) |