Click on a day for an hourly weather forecast
The temperatures in Chaumont in September are usually low and can range between 10°C and 20°C.
You can expect about 3 to 8 days of rain in Chaumont 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 Chaumont in September 2026.
If you’re planning to visit Chaumont in the near future, we highly recommend that you review the 14 day weather forecast for Chaumont before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 4° / 0° | 9 | 13 | 9 | 111 mm | Awful | Chaumont in January |
| February | 6° / 0° | 8 | 13 | 7 | 96 mm | Awful | Chaumont in February |
| March | 10° / 2° | 8 | 20 | 3 | 89 mm | Awful | Chaumont in March |
| April | 14° / 5° | 6 | 23 | 1 | 83 mm | Good | Chaumont in April |
| May | 17° / 8° | 9 | 22 | 0 | 136 mm | Ok | Chaumont in May |
| June | 21° / 11° | 8 | 22 | 0 | 129 mm | Ok | Chaumont in June |
| July | 24° / 13° | 7 | 24 | 0 | 105 mm | Good | Chaumont in July |
| August | 24° / 13° | 6 | 25 | 0 | 102 mm | Perfect | Chaumont in August |
| September | 20° / 10° | 5 | 25 | 0 | 84 mm | Good | Chaumont in September |
| October | 15° / 7° | 7 | 24 | 0 | 104 mm | Ok | Chaumont in October |
| November | 9° / 4° | 8 | 19 | 2 | 122 mm | Awful | Chaumont in November |
| December | 6° / 1° | 10 | 14 | 7 | 128 mm | Awful | Chaumont in December |