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September Weather in Mendon, United States

Last updated: June 24, 2025

In September, the average temperature in Mendon, United States is a pleasant 21°C (71°F). Temperatures can vary significantly, with lows dipping to 6°C (43°F) and highs soaring up to 35°C (95°F). During this month, expect about 89 mm (3.5 in) of precipitation over approximately 7 days, complemented by an average humidity of 76%. Enjoy the comfortable weather while being prepared for the occasional rain!

September Temperature in Mendon

In September in Mendon, the average temperature is 21°C (71°F). Maximum temperatures can reach 35°C (95°F), while minimums can drop as low as 6°C (43°F). Overall, it's a great time to explore Mendon with warm days and cooler nights, perfect for outdoor adventures.

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

The chart illustrates September temperature patterns in Mendon, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Mendon, September typically has an average temperature of 21°C (71°F), with highs reaching up to 35°C (95°F) and lows dropping to around 6°C (43°F).
JanFebMarAprMayJunJulAugSepOctNovDec283144526575787570574236
Data source: Temperature data for Mendon 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 Mendon

In Mendon in September, the total precipitation amount is 89 mm (3.5 in) spread over a period of 7 days.

September Precipitation Trends in Mendon

The chart displays monthly precipitation patterns in Mendon, 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 Mendon, September typically receives around 89 mm (3.5 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec61621181031641128596891045645
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Mendon

In Mendon in September humidity is 76%. With an average temperature of 21°C (71°F), this humidity feels like a warm, enveloping blanket, making traveling both refreshing and a bit exhausting, as the air clings to your skin and you often find yourself reaching for water to stay hydrated.

September Average Humidity in Mendon

This chart illustrates the average monthly humidity levels in Mendon, 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 Mendon is approximately 76%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%80%80%80%82%83%81%80%76%76%85%86%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Mendon

In Mendon in September, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Mendon.

Maximum UV Index Levels in Mendon for September

The chart shows the monthly maximum UV Index (UVI) for Mendon 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 Mendon typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec357910111198643
Data source: Mendon 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 Mendon Compares to Other Months

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

This table compares monthly weather conditions in Mendon, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-2°C (29°F)61 mm (2.4 inches)82%moderate
February Weather-1°C (31°F)62 mm (2.4 inches)80%moderate
March Weather6°C (44°F)118 mm (4.7 inches)80%high
April Weather11°C (53°F)103 mm (4.1 inches)80%very high
May Weather18°C (66°F)164 mm (6.5 inches)82%very high
June Weather24°C (76°F)112 mm (4.4 inches)83%extreme
July Weather26°C (79°F)85 mm (3.3 inches)81%extreme
August Weather24°C (75°F)96 mm (3.8 inches)80%very high
September Weather21°C (71°F)89 mm (3.5 inches)76%very high
October Weather14°C (57°F)104 mm (4.1 inches)76%high
November Weather5°C (42°F)56 mm (2.2 inches)85%moderate
December Weather2°C (36°F)45 mm (1.8 inches)86%moderate

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