South Pasadena, CA
Climate overview — based on NOAA 1991-2020 normals from PASADENA, CA US.
Year-round temperatures (°F)
Climate summary
South Pasadena has an annual average temperature of 66°F with about 20.1 inches of precipitation per year. The warmest month is August (average high 91.3°F), and the coldest is December (average low 44.7°F). February is typically the wettest month (5.16 in) and August the driest (0.03 in).
Best time to visit South Pasadena
Full guide →Climate change signal
All-time records →63 of 366 (17.2%) of South Pasadena's all-time daily heat records have been set since 2015. If records were spread evenly across the station's history, only about 5% would fall in any given decade.
| 1890s | 0 | |
| 1900s | 5 | |
| 1910s | 37 | |
| 1920s | 20 | |
| 1930s | 26 | |
| 1940s | 19 | |
| 1950s | 26 | |
| 1960s | 24 | |
| 1970s | 33 | |
| 1980s | 33 | |
| 1990s | 38 | |
| 2000s | 28 | |
| 2010s | 45 | |
| 2020s | 32 |
Bars: number of all-time daily heat records still standing that were set in each decade.
Monthly averages
| Month | Avg High | Avg Low | Avg Temp | Precipitation | Snow | Rainy days |
|---|---|---|---|---|---|---|
| January | 68.1°F | 45.5°F | 56.8°F | 4.51 in | — | 7 |
| February | 69.3°F | 46.1°F | 57.7°F | 5.16 in | — | 8 |
| March | 72.6°F | 48.4°F | 60.5°F | 3.03 in | — | 6 |
| April | 76.2°F | 50.6°F | 63.4°F | 1.11 in | — | 3 |
| May | 78.3°F | 53.9°F | 66.1°F | 0.48 in | — | 3 |
| June | 83.7°F | 57.8°F | 70.7°F | 0.21 in | — | 2 |
| July | 89.1°F | 62.0°F | 75.6°F | 0.06 in | — | 1 |
| August | 91.3°F | 63.2°F | 77.2°F | 0.03 in | — | 0 |
| September | 89.9°F | 61.6°F | 75.8°F | 0.22 in | — | 1 |
| October | 83.0°F | 56.3°F | 69.7°F | 0.84 in | — | 3 |
| November | 74.7°F | 49.6°F | 62.1°F | 1.10 in | — | 3 |
| December | 67.2°F | 44.7°F | 56.0°F | 3.33 in | — | 6 |
Climate twins of South Pasadena
Why these? →The most climatically similar US cities at least 140 miles away (by monthly temperature + precipitation pattern).