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September Weather in Lasalle, France

Last updated: August 23, 2025

In Lasalle, France, the average temperature during September hovers around 18°C (64°F). Expect a minimum of 5°C (42°F) and a delightful maximum of 31°C (88°F). During this period, 74 mm (2.9 in) of precipitation is anticipated over the course of 7 days, accompanied by an average humidity level of 70%. Enjoy the pleasant climate as you explore!

September Temperature in Lasalle

In September in Lasalle, the average temperature is 18°C (64°F). The maximum can reach 31°C (88°F), while the minimum can be as low as 5°C (42°F). This makes Lasalle a great destination for travelers looking to enjoy moderate weather with possibilities for both warm and cooler days.

September Weather in Lasalle: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Lasalle, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Lasalle, September typically has an average temperature of 18°C (64°F), with highs reaching up to 31°C (88°F) and lows dropping to around 5°C (42°F).
JanFebMarAprMayJunJulAugSepOctNovDec404447525967727164564742
Data source: Temperature data for Lasalle 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 Lasalle

In Lasalle in September, the precipitation amount is 74 mm (2.9 in) over a period of 7 days.

September Precipitation Trends in Lasalle

The chart displays monthly precipitation patterns in Lasalle, 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 Lasalle, September typically receives around 74 mm (2.9 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec86721281231159243687420019999
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Lasalle

In Lasalle in September humidity is 70%. With an average temperature of 18°C (64°F), this humidity feels like a sticky embrace, making outdoor excursions a bit more cumbersome and requiring frequent breaks to stay refreshed and hydrated.

September Average Humidity in Lasalle

This chart illustrates the average monthly humidity levels in Lasalle, 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 Lasalle is approximately 70%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%77%73%73%71%67%66%63%70%80%84%83%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Lasalle

In Lasalle in September, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Lasalle.

Maximum UV Index Levels in Lasalle for September

The chart shows the monthly maximum UV Index (UVI) for Lasalle 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 Lasalle typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec24679101097532
Data source: Lasalle 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 Lasalle Compares to Other Months

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

This table compares monthly weather conditions in Lasalle, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (41°F)85 mm (3.4 inches)82%low
February Weather7°C (45°F)72 mm (2.8 inches)77%moderate
March Weather9°C (48°F)128 mm (5.0 inches)73%high
April Weather11°C (52°F)123 mm (4.8 inches)73%high
May Weather15°C (59°F)115 mm (4.5 inches)71%very high
June Weather19°C (67°F)92 mm (3.6 inches)67%very high
July Weather22°C (72°F)43 mm (1.7 inches)66%very high
August Weather22°C (71°F)68 mm (2.7 inches)63%very high
September Weather18°C (64°F)74 mm (2.9 inches)70%high
October Weather13°C (56°F)200 mm (7.9 inches)80%moderate
November Weather8°C (47°F)199 mm (7.8 inches)84%moderate
December Weather6°C (42°F)99 mm (3.9 inches)83%low

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