
| Month | Low | High |
|---|---|---|
| Jan | 49.7°F | 65.8°F |
| Feb | 51.5°F | 66.3°F |
| Mar | 53.6°F | 66.3°F |
| Apr | 56.4°F | 68.7°F |
| May | 59.8°F | 69.3°F |
| Jun | 62.6°F | 72.2°F |
| Jul | 65.9°F | 75.8°F |
| Aug | 67.4°F | 77.5°F |
| Sept | 66.1°F | 77.0°F |
| Oct | 61.2°F | 74.0°F |
| Nov | 53.6°F | 69.9°F |
| Dec | 48.9°F | 66.3°F |
San Diego's coldest month is December when the average temperature overnight is 48.9°F. In August, the warmest month, the average day time temperature rises to 77.5°F.

| Month | Precipitation |
|---|---|
| Jan | 2.28in. |
| Feb | 2.04in. |
| Mar | 2.26in. |
| Apr | 0.75in. |
| May | 0.20in. |
| Jun | 0.09in. |
| Jul | 0.03in. |
| Aug | 0.09in. |
| Sept | 0.21in. |
| Oct | 0.44in. |
| Nov | 1.07in. |
| Dec | 1.31in. |
The driest month in San Diego is July with 0.03 inches of precipitation, and with 2.28 inches January is the wettest month.