Click on a day for an hourly weather forecast
The weather in Fontana in August is hot. The average temperatures are between 16°C and 34°C. Usually the days in August are hot while the nights are a bit cooler.
There shouldn't be any rainy days in in Fontana during August. Having said that, the days are very hot in August so hanging out outside is more recomanded during the after noons and evening time.
Our weather forecast can give you a great sense of what weather to expect in Fontana in August 2025.
If you’re planning to visit Fontana in the near future, we highly recommend that you review the 14 day weather forecast for Fontana before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 18° / 5° | 2 | 29 | 0 | 50 mm | Good | Fontana in January |
| February | 18° / 5° | 2 | 26 | 0 | 55 mm | Good | Fontana in February |
| March | 20° / 5° | 2 | 29 | 0 | 31 mm | Good | Fontana in March |
| April | 23° / 7° | 1 | 29 | 0 | 23 mm | Perfect | Fontana in April |
| May | 26° / 9° | 0 | 31 | 0 | 7 mm | Perfect | Fontana in May |
| June | 31° / 12° | 0 | 30 | 0 | 2 mm | Good | Fontana in June |
| July | 34° / 15° | 1 | 30 | 0 | 18 mm | Ok | Fontana in July |
| August | 34° / 16° | 0 | 31 | 0 | 10 mm | Ok | Fontana in August |
| September | 32° / 14° | 0 | 30 | 0 | 7 mm | Good | Fontana in September |
| October | 27° / 10° | 0 | 31 | 0 | 8 mm | Perfect | Fontana in October |
| November | 22° / 7° | 1 | 29 | 0 | 18 mm | Good | Fontana in November |
| December | 17° / 4° | 3 | 28 | 0 | 63 mm | Good | Fontana in December |