Lons-le-Saunier Weather in September
What's the weather like in Lons-le-Saunier (Franche-Comté) in September 2025?
The climate in Lons-le-Saunier during September can be summarized as mild and a little damp.
September is in the fall / autumn in Lons-le-Saunier and is typically the 4th warmest month of the year. Daytime maximum temperatures average around 21°C (69°F), whilst at night 10°C (50°F) is normal.
| Daytime temperature | 20.8°C 69.4°F |
|---|---|
| Nightly temperature | 10.2°C 50.4°F |
| Average temperature | 15.5°C 59.9°F |
| Daily sunshine | 7 hrs |
| Avg rainfall | 87 mm 3.4 ins |
| Rainy days | 12 days |
| Sea temperature | 20.5°C 68.9°F |
| Humidity | 73% |
| Windspeed | 8.3kph 5 mph |
On average September is the 4th wettest month of the year in Lons-le-Saunier with around 87mm 3.4 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 12 days, although this may vary considerably.
On the flip side this corresponds to an average of 7 hours of sunshine per day.
September temperatures in Lons-le-Saunier
September rainfall
September hourly sunshine
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Lons-le-Saunier in September 2025.
Other monthly averages
Best places to visit in September
Lons-le-Saunier weather stats
| Hottest month: | July | 24.5°C 76.1°F |
|---|---|---|
| Driest month: | July | 70mm 2.8ins |
| Sunniest month: | July | 9.4hrs |
| Coldest month: | January | 3.8°C 38.8°F |
| Wettest month: | May | 95mm 3.7ins |
© Google
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