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September Weather in Lons-le-Saunier, France

Last updated: August 23, 2025

In Lons-le-Saunier, France, the average temperature in September hovers around 18°C (64°F), with a comfortable range from a chilly 5°C (41°F) to a warm 33°C (91°F). Expect 62 mm (2.4 in) of precipitation spread over 9 days, contributing to an average humidity of 81%. Perfect for those who enjoy a mix of mild weather and lush surroundings!

September Temperature in Lons-le-Saunier

In September in Lons-le-Saunier, the average temperature is 18°C (64°F). The maximum can reach 33°C (91°F) and the minimum can be as low as 5°C (41°F). This delightful range makes it a perfect time for travelers to enjoy outdoor activities while also being prepared for cooler evenings.

September Weather in Lons-le-Saunier: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Lons-le-Saunier, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Lons-le-Saunier, September typically has an average temperature of 18°C (64°F), with highs reaching up to 33°C (91°F) and lows dropping to around 5°C (41°F).
JanFebMarAprMayJunJulAugSepOctNovDec384347535968727164554541
Data source: Temperature data for Lons-le-Saunier generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Lons-le-Saunier

In Lons-le-Saunier in September, the precipitation amount is 62 mm (2.4 in) over the course of 9 days.

September Precipitation Trends in Lons-le-Saunier

The chart displays monthly precipitation patterns in Lons-le-Saunier, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Lons-le-Saunier, September typically receives around 62 mm (2.4 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec112891155512485645262100101175
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Lons-le-Saunier

In Lons-le-Saunier in September, humidity is 81%. With an average temperature of 18°C (64°F), this humidity feels like a warm embrace, making travel both refreshing and slightly stifling at the same time.

September Average Humidity in Lons-le-Saunier

This chart illustrates the average monthly humidity levels in Lons-le-Saunier, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Lons-le-Saunier is approximately 81%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%89%87%84%80%82%82%77%81%89%89%91%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Lons-le-Saunier

In Lons-le-Saunier in September, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Lons-le-Saunier, you can refer to this Hourly UV Index in Lons-le-Saunier.

Maximum UV Index Levels in Lons-le-Saunier for September

The chart shows the monthly maximum UV Index (UVI) for Lons-le-Saunier in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In September, the maximum UV index in Lons-le-Saunier typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235689986422
Data source: Lons-le-Saunier September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How September Weather in Lons-le-Saunier Compares to Other Months

Weather in Lons-le-Saunier varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Lons-le-Saunier, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Lons-le-Saunier, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather3°C (38°F)112 mm (4.4 inches)91%low
February Weather6°C (43°F)89 mm (3.5 inches)89%moderate
March Weather8°C (47°F)115 mm (4.5 inches)87%moderate
April Weather12°C (53°F)54 mm (2.1 inches)84%high
May Weather15°C (60°F)124 mm (4.9 inches)80%very high
June Weather20°C (68°F)85 mm (3.3 inches)82%very high
July Weather22°C (72°F)64 mm (2.5 inches)82%very high
August Weather22°C (71°F)52 mm (2.0 inches)77%very high
September Weather18°C (64°F)62 mm (2.4 inches)81%high
October Weather13°C (55°F)100 mm (3.9 inches)89%moderate
November Weather7°C (45°F)101 mm (4.0 inches)89%low
December Weather5°C (42°F)175 mm (6.9 inches)91%low

Compare Lons-le-Saunier's Climate with Cities Worldwide