| Month | Daily minimum (°C) | Daily maximum (°C) | Days of rain | Rainfall (mm) |
|---|---|---|---|---|
| January | 11.7 | 27.8 | 6.1 | 53.0 |
| February | 12.2 | 29.0 | 4.6 | 36.1 |
| March | 10.4 | 24.9 | 6.0 | 37.6 |
| April | 7.0 | 19.3 | 8.1 | 52.4 |
| May | 5.7 | 15.3 | 11.2 | 63.9 |
| June | 3.3 | 11.7 | 13.6 | 71.1 |
| July | 3.0 | 10.8 | 14.9 | 78.2 |
| August | 3.7 | 12.6 | 16.2 | 87.1 |
| September | 4.9 | 14.9 | 13.8 | 82.6 |
| October | 6.2 | 18.3 | 10.7 | 68.5 |
| November | 8.1 | 22.1 | 8.8 | 62.4 |
| December | 10.0 | 25.8 | 6.6 | 52.3 |
| Statistics provided by BOM for Spring Creek (nearest comparable weather site to Merrijig) | ||||