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Weather in Fullerton
Average Weather
| Month | Average monthly max temperature | Average monthly min temperature |
| January | 19°C | 9°C |
| February | 19°C | 9°C |
| March | 20°C | 10°C |
| April | 22°C | 12°C |
| May | 23°C | 14°C |
| June | 25°C | 16°C |
| July | 28°C | 18°C |
| August | 29°C | 19°C |
| September | 29°C | 19°C |
| October | 26°C | 16°C |
| November | 23°C | 12°C |
| December | 19°C | 9°C |
