Click on a day for an hourly weather forecast
The temperatures in Lake George in September are comfortable with low of 11°C and and high up to 22°C.
You can expect about 3 to 8 days of rain in Lake George 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 Lake George in September 2025.
If you’re planning to visit Lake George in the near future, we highly recommend that you review the 14 day weather forecast for Lake George before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | -4° / -9° | 6 | 3 | 23 | 72 mm | Awful | Lake George in January |
| February | -3° / -9° | 4 | 4 | 21 | 66 mm | Awful | Lake George in February |
| March | 4° / -4° | 7 | 12 | 12 | 74 mm | Awful | Lake George in March |
| April | 11° / 2° | 9 | 15 | 6 | 134 mm | Awful | Lake George in April |
| May | 18° / 8° | 7 | 23 | 0 | 122 mm | Ok | Lake George in May |
| June | 23° / 12° | 7 | 23 | 0 | 127 mm | Good | Lake George in June |
| July | 26° / 15° | 6 | 25 | 0 | 95 mm | Perfect | Lake George in July |
| August | 25° / 14° | 5 | 26 | 0 | 92 mm | Perfect | Lake George in August |
| September | 22° / 11° | 4 | 26 | 0 | 63 mm | Good | Lake George in September |
| October | 14° / 6° | 8 | 22 | 1 | 122 mm | Ok | Lake George in October |
| November | 6° / 0° | 6 | 14 | 11 | 64 mm | Awful | Lake George in November |
| December | 0° / -5° | 8 | 7 | 18 | 71 mm | Awful | Lake George in December |