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September Weather in Le Grand, United States

Last updated: June 24, 2025

In Le Grand, United States, the average temperature in September hovers around 25°C (78°F), offering a pleasant climate. However, temperatures can fluctuate significantly, with a minimum of 9°C (49°F) and soaring up to a maximum of 44°C (111°F). Despite these extremes, precipitation is minimal, averaging only 1 mm (0.0 in) over 0 days, and the average humidity remains at a comfortable 55%.

September Temperature in Le Grand

In September in Le Grand, the average temperature is 25°C (78°F). Maximum temperatures can reach 44°C (111°F), while minimums can dip as low as 9°C (49°F). Be prepared for a wide range of temperatures when traveling to Le Grand during this month.

September Weather in Le Grand: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Le Grand, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Le Grand, September typically has an average temperature of 25°C (78°F), with highs reaching up to 44°C (111°F) and lows dropping to around 9°C (49°F).
JanFebMarAprMayJunJulAugSepOctNovDec505256637079858477665649
Data source: Temperature data for Le Grand 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 Le Grand

In Le Grand in September, the precipitation amount is 1 mm (0.0 in) during a span of 0 days.

September Precipitation Trends in Le Grand

The chart displays monthly precipitation patterns in Le Grand, 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 Le Grand, September typically receives around 1 mm (0.0 inches) of precipitation spread over approximately 0 days.
JanFebMarAprMayJunJulAugSepOctNovDec1129211836281001213992
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Le Grand

In Le Grand in September humidity is 55%. With an average temperature of 25°C (78°F), this humidity feels like a warm embrace, making it a great time for leisurely strolls and outdoor adventures, but travelers should stay hydrated to fully enjoy the experience.

September Average Humidity in Le Grand

This chart illustrates the average monthly humidity levels in Le Grand, 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 Le Grand is approximately 55%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%84%82%78%71%64%59%54%55%62%78%80%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Le Grand

In Le Grand in September, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Le Grand.

Maximum UV Index Levels in Le Grand for September

The chart shows the monthly maximum UV Index (UVI) for Le Grand 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 Le Grand typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3589101111109743
Data source: Le Grand 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 Le Grand Compares to Other Months

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

This table compares monthly weather conditions in Le Grand, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather10°C (50°F)112 mm (4.4 inches)82%moderate
February Weather11°C (52°F)92 mm (3.6 inches)84%moderate
March Weather13°C (56°F)118 mm (4.6 inches)82%very high
April Weather17°C (63°F)36 mm (1.4 inches)78%very high
May Weather21°C (71°F)28 mm (1.1 inches)71%very high
June Weather26°C (80°F)1 mm (0.0 inches)64%extreme
July Weather30°C (85°F)0 mm (0.0 inches)58%extreme
August Weather29°C (84°F)0 mm (0.0 inches)54%very high
September Weather25°C (78°F)1 mm (0.0 inches)55%very high
October Weather19°C (66°F)21 mm (0.8 inches)62%high
November Weather13°C (56°F)39 mm (1.5 inches)78%moderate
December Weather9°C (49°F)92 mm (3.6 inches)80%moderate

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