March weather in San Luis Obispo, CA
The average temperature in San Luis Obispo in March is 55.6°F (44.5°F–66.7°F). Average precipitation: 3.17 inches.
March is a spring month in San Luis Obispo, and is cooler than the annual average of 59.7°F. Daily temperatures swing about 22.2°F between overnight low and afternoon high. Expect about 9 days with precipitation. Daylight averages about 11h 46m. For travel, March is a comfortable month to visit.
Avg High
66.7°F
Avg Low
44.5°F
Precipitation
3.17 in
Daylight
11h 46m
March records in San Luis Obispo
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| March 1 | 86.0°F (2022) | 33.1°F (2011) | 1.41 in (2014) |
| March 2 | 81.0°F (2022) | 34.0°F (2002) | 0.76 in (2019) |
| March 3 | 80.1°F (2017) | 33.1°F (2002) | 0.58 in (2009) |
| March 4 | 84.9°F (2012) | 30.9°F (2002) | 2.17 in (2001) |
| March 5 | 75.9°F (2015) | 33.1°F (1999) | 1.37 in (2001) |
| March 6 | 82.0°F (2015) | 34.0°F (2017) | 0.98 in (2006) |
| March 7 | 82.9°F (2015) | 32.0°F (1999) | 0.99 in (2016) |
| March 8 | 84.9°F (2004) | 32.0°F (2012) | 0.30 in (2000) |
| March 9 | 84.0°F (2017) | 34.0°F (2002) | 0.61 in (2023) |
| March 10 | 84.0°F (2004) | 36.0°F (2025) | 2.62 in (2023) |
| March 11 | 89.1°F (2007) | 34.0°F (2009) | 0.84 in (2016) |
| March 12 | 90.0°F (2007) | 36.0°F (1999) | 0.71 in (2025) |
| March 13 | 89.1°F (2015) | 32.0°F (2006) | 0.38 in (2016) |
| March 14 | 90.0°F (2015) | 36.0°F (2006) | 2.93 in (2023) |
| March 15 | 88.0°F (2014) | 32.0°F (2002) | 0.71 in (1999) |
| March 16 | 90.0°F (2014) | 32.0°F (2002) | 1.25 in (2020) |
| March 17 | 97.0°F (2026) | 35.1°F (2002) | 1.37 in (2012) |
| March 18 | 91.0°F (2026) | 34.0°F (2020) | 0.27 in (2011) |
| March 19 | 97.0°F (2026) | 34.0°F (2002) | 1.24 in (2011) |
| March 20 | 91.0°F (2026) | 36.0°F (2002) | 2.74 in (2011) |
| March 21 | 84.0°F (2026) | 35.1°F (2000) | 2.07 in (2018) |
| March 22 | 87.1°F (2022) | 36.0°F (2000) | 2.18 in (2005) |
| March 23 | 91.9°F (2026) | 37.0°F (2006) | 0.64 in (2011) |
| March 24 | 87.1°F (2026) | 37.0°F (1999) | 0.65 in (2011) |
| March 25 | 82.9°F (2015) | 37.9°F (2002) | 0.85 in (1999) |
| March 26 | 90.0°F (2015) | 35.1°F (2020) | 0.30 in (2011) |
| March 27 | 78.1°F (2026) | 37.0°F (2020) | 0.60 in (2006) |
| March 28 | 86.0°F (2004) | 36.0°F (2007) | 1.04 in (2006) |
| March 29 | 86.0°F (2026) | 37.0°F (2000) | 1.49 in (2024) |
| March 30 | 84.0°F (2001) | 37.9°F (2000) | 0.30 in (2025) |
| March 31 | 89.1°F (2011) | 34.0°F (2008) | 0.89 in (2006) |