La Mesa, CA
Climate overview — based on NOAA 1991-2020 normals from EL CAJON, CA US.
Year-round temperatures (°F)
Climate summary
La Mesa has an annual average temperature of 65.1°F with about 11.6 inches of precipitation per year. The warmest month is August (average high 88.6°F), and the coldest is December (average low 41.7°F). February is typically the wettest month (2.61 in) and August the driest (0.02 in).
Best time to visit La Mesa
Full guide →Climate change signal
All-time records →83 of 366 (22.7%) of La Mesa'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.
| 1970s | 4 | |
| 1980s | 87 | |
| 1990s | 57 | |
| 2000s | 97 | |
| 2010s | 79 | |
| 2020s | 42 |
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 | 69.3°F | 42.5°F | 55.9°F | 2.32 in | — | 6 |
| February | 69.2°F | 44.4°F | 56.8°F | 2.61 in | — | 7 |
| March | 71.3°F | 48.0°F | 59.7°F | 1.92 in | — | 5 |
| April | 74.5°F | 50.7°F | 62.6°F | 0.75 in | — | 4 |
| May | 76.2°F | 55.9°F | 66.1°F | 0.30 in | — | 2 |
| June | 80.8°F | 59.4°F | 70.1°F | 0.06 in | — | 1 |
| July | 86.1°F | 63.3°F | 74.7°F | 0.16 in | — | 1 |
| August | 88.6°F | 64.7°F | 76.6°F | 0.02 in | — | 0 |
| September | 87.3°F | 62.1°F | 74.7°F | 0.11 in | — | 1 |
| October | 81.0°F | 55.6°F | 68.3°F | 0.54 in | — | 2 |
| November | 75.2°F | 47.1°F | 61.2°F | 1.01 in | — | 3 |
| December | 68.5°F | 41.7°F | 55.1°F | 1.83 in | — | 6 |
Climate twins of La Mesa
Why these? →The most climatically similar US cities at least 140 miles away (by monthly temperature + precipitation pattern).