Click on a day for an hourly weather forecast
The temperatures in Yosemite in September are comfortable with low of 19°C and and high up to 26°C.
You can expect about 3 to 8 days of rain in Yosemite during the month of September. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Our weather forecast can give you a great sense of what weather to expect in Yosemite in September 2025.
If you’re planning to visit Yosemite in the near future, we highly recommend that you review the 14 day weather forecast for Yosemite before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 3° / -3° | 2 | 25 | 4 | 5 mm | Awful | Yosemite in January |
| February | 6° / -1° | 1 | 24 | 3 | 12 mm | Awful | Yosemite in February |
| March | 12° / 4° | 2 | 29 | 1 | 13 mm | Ok | Yosemite in March |
| April | 19° / 10° | 3 | 27 | 0 | 31 mm | Good | Yosemite in April |
| May | 26° / 16° | 3 | 28 | 0 | 52 mm | Perfect | Yosemite in May |
| June | 30° / 21° | 5 | 25 | 0 | 89 mm | Good | Yosemite in June |
| July | 31° / 24° | 8 | 23 | 0 | 191 mm | Ok | Yosemite in July |
| August | 30° / 24° | 8 | 23 | 0 | 186 mm | Ok | Yosemite in August |
| September | 26° / 19° | 3 | 27 | 0 | 46 mm | Perfect | Yosemite in September |
| October | 20° / 14° | 2 | 29 | 0 | 18 mm | Good | Yosemite in October |
| November | 12° / 6° | 3 | 26 | 1 | 36 mm | Ok | Yosemite in November |
| December | 5° / -1° | 2 | 26 | 3 | 10 mm | Awful | Yosemite in December |