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Weather & Climate
El Cajon, California, United States
Overview
Climate data and monthly weather averages for El Cajon.
Key Metrics
Annual Avg
17.1°C
Summer Avg
23.3°C
Winter Avg
11°C
Record High
43.8°C
Record Low
-1.9°C
Annual Precipitation
320.2 mm
Avg Humidity
57%
Summer Humidity
49%
Winter Humidity
62%
Monthly Averages
| Month | High (°C) | Avg (°C) | Low (°C) | Rain (mm) | Humidity (%) | Sunshine (h) | Wind (kph) |
|---|---|---|---|---|---|---|---|
| Jan | 27.4° | 11° | -1.9° | 54.3 | 61% | 108 | 63.4 |
| Feb | 30.3° | 11.3° | -1° | 69.2 | 64% | 121 | 48.9 |
| Mar | 31.1° | 13.1° | 1.6° | 35 | 65% | 178 | 46.3 |
| Apr | 34° | 14.5° | 2.8° | 22.5 | 64% | 209 | 45.4 |
| May | 38.3° | 17.1° | 4.8° | 9.3 | 62% | 239 | 36 |
| Jun | 42.8° | 20.6° | 6.1° | 1.8 | 54% | 249 | 29.6 |
| Jul | 43.8° | 24.5° | 10.1° | 5.9 | 48% | 239 | 28.2 |
| Aug | 42.4° | 24.9° | 9.9° | 5.9 | 46% | 225 | 25.6 |
| Sep | 43.8° | 23.4° | 8.8° | 6.9 | 48% | 189 | 33.3 |
| Oct | 38.4° | 19° | 5.5° | 18.3 | 53% | 156 | 49.8 |
| Nov | 32.1° | 14.7° | -0.6° | 29.7 | 55% | 114 | 44.8 |
| Dec | 26.8° | 10.7° | -0.8° | 61.4 | 62% | 97 | 50.3 |
Frequently Asked Questions
Sources: NASA POWER · Last updated: 2025
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