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September Weather in Chetek, United States

Last updated: June 24, 2025

In Chetek, United States, the average temperature in September hovers around 17°C (62°F). Expect a temperature range with a minimum of 0°C (32°F) and a maximum reaching 32°C (90°F). During this month, anticipate 100 mm (3.9 in) of precipitation spread over 11 days, contributing to an average humidity level of 80%.

September Temperature in Chetek

In September in Chetek, the average temperature is 17°C (62°F). Maximum temperatures can reach up to 32°C (90°F), while the minimum can drop as low as 0°C (32°F). This range makes it an ideal time for travelers to experience a variety of activities, from warm afternoons to cool evenings.

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

The chart illustrates September temperature patterns in Chetek, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Chetek, September typically has an average temperature of 17°C (62°F), with highs reaching up to 32°C (90°F) and lows dropping to around 0°C (32°F).
JanFebMarAprMayJunJulAugSepOctNovDec151632425768726862473222
Data source: Temperature data for Chetek 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 Chetek

In Chetek in September, the precipitation amount is 100 mm (3.9 in) over the course of 11 days.

September Precipitation Trends in Chetek

The chart displays monthly precipitation patterns in Chetek, 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 Chetek, September typically receives around 100 mm (3.9 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec304256901221081121211001044560
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Chetek

In Chetek in September, humidity is 80%. With an average temperature of 17°C (62°F), this humidity feels like a heavy blanket wrapping around you, making travel sticky and uncomfortable, and often leaving you longing for a refreshing breeze.

September Average Humidity in Chetek

This chart illustrates the average monthly humidity levels in Chetek, 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 Chetek is approximately 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%89%86%85%79%80%80%78%80%84%89%85%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Chetek

In Chetek 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 Chetek.

Maximum UV Index Levels in Chetek for September

The chart shows the monthly maximum UV Index (UVI) for Chetek 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 Chetek typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2457910997532
Data source: Chetek 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 Chetek Compares to Other Months

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

This table compares monthly weather conditions in Chetek, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-9°C (16°F)30 mm (1.2 inches)88%low
February Weather-9°C (16°F)42 mm (1.7 inches)89%moderate
March Weather0°C (32°F)56 mm (2.2 inches)86%moderate
April Weather5°C (42°F)90 mm (3.6 inches)85%high
May Weather14°C (57°F)122 mm (4.8 inches)79%very high
June Weather20°C (69°F)108 mm (4.3 inches)80%very high
July Weather22°C (72°F)112 mm (4.4 inches)80%very high
August Weather20°C (68°F)121 mm (4.7 inches)78%very high
September Weather17°C (62°F)100 mm (3.9 inches)80%high
October Weather8°C (47°F)104 mm (4.1 inches)84%moderate
November Weather0°C (32°F)45 mm (1.8 inches)89%moderate
December Weather-6°C (22°F)60 mm (2.4 inches)85%low

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