
| Month | Low | High |
|---|---|---|
| Jan | 21.7°F | 32.8°F |
| Feb | 25.7°F | 39.3°F |
| Mar | 30.4°F | 48.6°F |
| Apr | 35.5°F | 57.5°F |
| May | 42.6°F | 66.2°F |
| Jun | 49.2°F | 73.9°F |
| Jul | 54.6°F | 82.5°F |
| Aug | 54.5°F | 82.6°F |
| Sept | 45.9°F | 72.5°F |
| Oct | 35.8°F | 58.5°F |
| Nov | 28.7°F | 41.1°F |
| Dec | 21.6°F | 32.8°F |
Spokane's coldest month is December when the average temperature overnight is 21.6°F. In August, the warmest month, the average day time temperature rises to 82.6°F.

| Month | Precipitation |
|---|---|
| Jan | 1.82in. |
| Feb | 1.51in. |
| Mar | 1.53in. |
| Apr | 1.28in. |
| May | 1.60in. |
| Jun | 1.18in. |
| Jul | 0.76in. |
| Aug | 0.68in. |
| Sept | 0.76in. |
| Oct | 1.06in. |
| Nov | 2.24in. |
| Dec | 2.25in. |
The driest month in Spokane is August with 0.68 inches of precipitation, and with 2.25 inches December is the wettest month.