| City | Average (°C) | Record (°C) | Yearly (cm) | ||
|---|---|---|---|---|---|
| High | Low | High | Low | Precipitation | |
| Albany | 20.4 | 10.7 | 45.3 | -0.2 | 76.6 |
| Broome | 32.4 | 21.4 | 44.8 | 3.3 | 74.6 |
| Donnybrook | 23.5 | 10.2 | 44.6 | -3.0 | 88.3 |
| Esperance | 22.0 | 12.2 | 46.9 | -0.6 | 60.5 |
| Geraldton | 26.3 | 13.8 | 47.7 | -0.4 | 37.7 |
| Halls Creek | 33.7 | 20.2 | 45.0 | 0.2 | 67.8 |
| Kalgoorlie | 25.6 | 12.2 | 46.5 | -3.4 | 26.7 |
| Manjimup | 21.0 | 10.0 | 42.7 | -0.6 | 86.4 |
| Merredin | 25.5 | 11.6 | 46.2 | -3.9 | 32.6 |
| Narrogin | 23.0 | 9.8 | 44.7 | -3.1 | 44.2 |
| Northam | 25.9 | 10.8 | 48.1 | -3.9 | 39.9 |
| Perth | 25.1 | 12.5 | 46.7 | -1.3 | 69.7 |
| Port Hedland | 33.7 | 20.0 | 49.0 | 3.2 | 31.7 |