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September Weather in Cass City, United States

Last updated: June 24, 2025

In September, the average temperature in Cass City, United States is a pleasant 17°C (64°F). However, temperatures can swing from a chilly 0°C (32°F) to a warm 34°C (93°F). Expect 81 mm (3.2 in) of precipitation spread over about 10 days, with an average humidity of 80%, creating a lush and vibrant atmosphere.

September Temperature in Cass City

In September in Cass City, the average temperature is 17°C (64°F). Maximums can reach 34°C (93°F), and minimums can be as low as 0°C (32°F). Be prepared for a wide range of temperatures when traveling, so pack accordingly!

September Weather in Cass City: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Cass City, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Cass City, September typically has an average temperature of 17°C (64°F), with highs reaching up to 34°C (93°F) and lows dropping to around 0°C (32°F).
JanFebMarAprMayJunJulAugSepOctNovDec252634455868737063523731
Data source: Temperature data for Cass City 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 Cass City

In Cass City in September, the precipitation amount is 81 mm (3.2 in) over a span of 10 days.

September Precipitation Trends in Cass City

The chart displays monthly precipitation patterns in Cass City, 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 Cass City, September typically receives around 81 mm (3.2 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec61646395921068089811076657
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Cass City

In Cass City in September, humidity is 80%. With an average temperature of 17°C (64°F), this humidity feels like a warm blanket wrapping around you, making travel somewhat uncomfortable as the air feels heavy and oppressive.

September Average Humidity in Cass City

This chart illustrates the average monthly humidity levels in Cass City, 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 Cass City is approximately 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%87%85%86%80%80%80%81%80%84%90%86%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Cass City

In Cass City 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 Cass City.

Maximum UV Index Levels in Cass City for September

The chart shows the monthly maximum UV Index (UVI) for Cass City 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 Cass City typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2458910997532
Data source: Cass City 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 Cass City Compares to Other Months

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

This table compares monthly weather conditions in Cass City, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-4°C (25°F)61 mm (2.4 inches)88%low
February Weather-4°C (26°F)64 mm (2.5 inches)87%moderate
March Weather1°C (35°F)63 mm (2.5 inches)85%moderate
April Weather7°C (45°F)95 mm (3.7 inches)86%very high
May Weather14°C (58°F)92 mm (3.6 inches)80%very high
June Weather20°C (68°F)106 mm (4.2 inches)80%very high
July Weather23°C (73°F)80 mm (3.1 inches)80%very high
August Weather21°C (71°F)89 mm (3.5 inches)80%very high
September Weather17°C (64°F)81 mm (3.2 inches)80%high
October Weather11°C (52°F)107 mm (4.2 inches)84%moderate
November Weather3°C (38°F)66 mm (2.6 inches)89%moderate
December Weather-1°C (31°F)57 mm (2.2 inches)86%low

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