Click on a day for an hourly weather forecast
The weather in Mammoth Lakes in October is very cold with temperatures between 1°C and 14°C, warm clothes are a must.
Mammoth Lakes is going to be cold and wet in the month of October. Expect low temperatures and a few days of rain, so be sure to bundle up to avoid catching a cold.
Please note that Mammoth Lakes can expect a few days of snow in October.
Our weather forecast can give you a great sense of what weather to expect in Mammoth Lakes in October 2025.
If you’re planning to visit Mammoth Lakes in the near future, we highly recommend that you review the 14 day weather forecast for Mammoth Lakes before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 2° / -9° | 6 | 19 | 6 | 86 mm | Awful | Mammoth Lakes in January |
| February | 1° / -10° | 7 | 16 | 5 | 78 mm | Awful | Mammoth Lakes in February |
| March | 3° / -8° | 7 | 17 | 7 | 72 mm | Awful | Mammoth Lakes in March |
| April | 8° / -4° | 5 | 21 | 4 | 37 mm | Bad | Mammoth Lakes in April |
| May | 12° / 0° | 6 | 22 | 2 | 37 mm | Bad | Mammoth Lakes in May |
| June | 19° / 5° | 5 | 25 | 0 | 22 mm | Good | Mammoth Lakes in June |
| July | 24° / 10° | 6 | 25 | 0 | 16 mm | Perfect | Mammoth Lakes in July |
| August | 24° / 9° | 4 | 27 | 0 | 14 mm | Perfect | Mammoth Lakes in August |
| September | 20° / 6° | 2 | 27 | 0 | 9 mm | Good | Mammoth Lakes in September |
| October | 14° / 1° | 2 | 28 | 1 | 29 mm | Good | Mammoth Lakes in October |
| November | 7° / -5° | 5 | 22 | 4 | 42 mm | Bad | Mammoth Lakes in November |
| December | 1° / -10° | 8 | 17 | 6 | 99 mm | Awful | Mammoth Lakes in December |