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September Weather in LeRoy, United States

Last updated: June 24, 2025

In LeRoy, United States, the average temperature in September hovers around 23°C (73°F), making it a pleasantly warm time to visit. Be prepared for a range of temperatures, with the minimum dipping to 4°C (40°F) and the maximum soaring to 34°C (94°F). Expect some rain, as 77 mm (3.0 in) of precipitation is anticipated over about 7 days. Overall, you'll experience a comfortable atmosphere with an average humidity of 67%.

September Temperature in LeRoy

In September in LeRoy, the average temperature is 23°C (73°F), with maximums reaching 34°C (94°F) and minimums dropping as low as 4°C (40°F). This diverse temperature range makes it an ideal destination for travelers seeking both warm days and cooler evenings.

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

The chart illustrates September temperature patterns in LeRoy, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In LeRoy, September typically has an average temperature of 23°C (73°F), with highs reaching up to 34°C (94°F) and lows dropping to around 4°C (40°F).
JanFebMarAprMayJunJulAugSepOctNovDec333548556677807773584539
Data source: Temperature data for LeRoy 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 LeRoy

In LeRoy in September, the precipitation amount is 77 mm (3.0 in) over the course of 7 days.

September Precipitation Trends in LeRoy

The chart displays monthly precipitation patterns in LeRoy, 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 LeRoy, September typically receives around 77 mm (3.0 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec55438410519311498118771333331
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in LeRoy

In LeRoy in September humidity is 67%. With an average temperature of 23°C (73°F), this humidity feels like a warm, enveloping blanket that makes the air feel thick and slightly sticky, which can be challenging for travelers who prefer cooler, drier conditions.

September Average Humidity in LeRoy

This chart illustrates the average monthly humidity levels in LeRoy, 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 LeRoy is approximately 67%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec77%76%71%74%83%83%81%73%67%72%82%85%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in LeRoy

In LeRoy 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 LeRoy.

Maximum UV Index Levels in LeRoy for September

The chart shows the monthly maximum UV Index (UVI) for LeRoy 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 LeRoy typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3679101111109743
Data source: LeRoy 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 LeRoy Compares to Other Months

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

This table compares monthly weather conditions in LeRoy, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather1°C (34°F)55 mm (2.2 inches)77%moderate
February Weather1°C (35°F)43 mm (1.7 inches)76%high
March Weather9°C (49°F)84 mm (3.3 inches)71%high
April Weather13°C (56°F)105 mm (4.1 inches)73%very high
May Weather19°C (67°F)193 mm (7.6 inches)83%very high
June Weather25°C (78°F)114 mm (4.5 inches)83%extreme
July Weather27°C (80°F)98 mm (3.8 inches)81%extreme
August Weather25°C (78°F)118 mm (4.7 inches)73%very high
September Weather23°C (73°F)77 mm (3.0 inches)67%very high
October Weather14°C (58°F)133 mm (5.2 inches)72%high
November Weather7°C (46°F)33 mm (1.3 inches)82%moderate
December Weather4°C (39°F)31 mm (1.2 inches)85%moderate

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