Click on a day for an hourly weather forecast
The temperatures in Lons Le Saunier in September are comfortable with low of 10°C and and high up to 22°C.
You can expect about 3 to 8 days of rain in Lons Le Saunier 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 Lons Le Saunier in September 2026.
If you’re planning to visit Lons Le Saunier in the near future, we highly recommend that you review the 14 day weather forecast for Lons Le Saunier before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 5° / -1° | 10 | 14 | 8 | 137 mm | Awful | Lons Le Saunier in January |
| February | 7° / 0° | 9 | 14 | 5 | 118 mm | Awful | Lons Le Saunier in February |
| March | 12° / 2° | 9 | 20 | 2 | 113 mm | Awful | Lons Le Saunier in March |
| April | 16° / 5° | 6 | 23 | 1 | 94 mm | Good | Lons Le Saunier in April |
| May | 19° / 8° | 9 | 22 | 0 | 152 mm | Ok | Lons Le Saunier in May |
| June | 23° / 11° | 8 | 22 | 0 | 164 mm | Good | Lons Le Saunier in June |
| July | 25° / 13° | 8 | 23 | 0 | 131 mm | Good | Lons Le Saunier in July |
| August | 25° / 13° | 6 | 25 | 0 | 117 mm | Perfect | Lons Le Saunier in August |
| September | 22° / 10° | 4 | 26 | 0 | 89 mm | Good | Lons Le Saunier in September |
| October | 16° / 6° | 7 | 24 | 0 | 104 mm | Ok | Lons Le Saunier in October |
| November | 10° / 3° | 8 | 19 | 2 | 142 mm | Awful | Lons Le Saunier in November |
| December | 6° / 0° | 10 | 16 | 5 | 168 mm | Awful | Lons Le Saunier in December |