Average annual temperature is 24.0 °C
Absolute maximum temperature: 33.7 °C
Absolute minimum temperature: 11.2 °C
Number of sunny days: 157 days
Number of rainy days: 208 days
Look at detailed online map of Castle Hill
* Weather data for Castle Hill Australia is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 31.5 | 33.6 | 32.6 | 33.6 | 29.5 | 29.7 | 27.5 | 27.9 | 29.7 | 30.8 | 32.0 | 33.7 |
| Average daytime temperature (°C) | 29.4 | 30.0 | 30.0 | 29.7 | 27.2 | 26.5 | 24.9 | 26.0 | 27.4 | 28.4 | 29.4 | 30.4 |
| Average temperature (°C) | 26.5 | 26.5 | 26.6 | 25.6 | 21.8 | 21.7 | 20.0 | 20.0 | 22.2 | 24.1 | 26.2 | 27.1 |
| Average night temperature (°C) | 24.2 | 23.6 | 23.6 | 22.3 | 17.3 | 17.8 | 16.0 | 14.5 | 17.2 | 19.8 | 23.4 | 24.5 |
| Absolute minimum temperature (°C) | 21.3 | 21.6 | 20.8 | 19.5 | 13.6 | 15.8 | 11.2 | 12.2 | 13.7 | 16.9 | 19.9 | 21.2 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 13.0 | 12.0 | 12.0 | 11.0 | 11.0 | 11.0 | 11.0 | 11.0 | 12.0 | 12.0 | 13.0 | 13.0 |
| Daylight mean duration (h) | 13.1 | 12.7 | 12.2 | 11.7 | 11.2 | 11.0 | 11.1 | 11.5 | 12.0 | 12.5 | 13.0 | 13.3 |
| Daylight minimum duration (h) | 12.0 | 12.0 | 11.0 | 11.0 | 11.0 | 10.0 | 10.0 | 11.0 | 11.0 | 12.0 | 12.0 | 13.0 |
| Sunshine mean duration (h) | 9.1 | 8.1 | 10.1 | 9.9 | 10.0 | 9.3 | 8.9 | 10.6 | 11.2 | 11.8 | 11.4 | 9.4 |
| Precipitation (mm) | 479 | 229 | 86 | 179 | 4 | 11 | 108 | 1 | 9 | 13 | 26 | 150 |
| Sunny days | 2 | 3 | 2 | 8 | 22 | 18 | 17 | 26 | 19 | 22 | 14 | 4 |
| Rainy days | 29 | 25 | 29 | 22 | 9 | 12 | 14 | 5 | 11 | 9 | 16 | 27 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Castle Hill is at