| Month | Daily minimum (°C) | Daily maximum (°C) | Days of rain | Rainfall (mm) |
|---|---|---|---|---|
| January | 13.4 | 30.5 | 3.0 | 22.1 |
| February | 13.9 | 30.8 | 2.8 | 24.6 |
| March | 11.7 | 27.2 | 3.3 | 23.5 |
| April | 8.4 | 22.4 | 5.0 | 27.7 |
| May | 5.8 | 17.6 | 7.3 | 36.5 |
| June | 3.4 | 13.8 | 8.9 | 39.0 |
| July | 3.1 | 13.5 | 9.9 | 36.8 |
| August | 3.8 | 15.2 | 9.6 | 38.5 |
| September | 4.7 | 18.0 | 8.0 | 37.8 |
| October | 7.1 | 21.9 | 7.0 | 37.9 |
| November | 9.8 | 26.4 | 4.9 | 29.7 |
| December | 12.0 | 29.3 | 3.7 | 25.3 |
| Statistics provided by BOM for Wycheproof (nearest comparable weather site to Charlton) | ||||