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September Weather in Tomah, United States

Last updated: June 24, 2025

In Tomah, United States, the average temperature in September hovers around 18°C (64°F). Daily fluctuations can be quite significant, with minimums dropping to 2°C (36°F) and peaks reaching up to 34°C (93°F). Expect precipitation of about 106 mm (4.2 in) spread over 10 days throughout the month, contributing to an average humidity level of 74%. Prepare for diverse weather as you explore this charming destination!

September Temperature in Tomah

In September in Tomah, the average temperature is 18°C (64°F). Maximums can reach 34°C (93°F), while minimums can drop to as low as 2°C (36°F). Be sure to pack layers for your trip to Tomah in September to stay comfortable in the fluctuating temperatures.

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

The chart illustrates September temperature patterns in Tomah, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Tomah, September typically has an average temperature of 18°C (64°F), with highs reaching up to 34°C (93°F) and lows dropping to around 2°C (36°F).
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Data source: Temperature data for Tomah 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 Tomah

In Tomah in September, the precipitation amount is 106 mm (4.2 in) over a span of 10 days.

September Precipitation Trends in Tomah

The chart displays monthly precipitation patterns in Tomah, 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 Tomah, September typically receives around 106 mm (4.2 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec375359891341161011121061065145
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Tomah

In Tomah in September humidity is 74%. With an average temperature of 18°C (64°F), this humidity feels like a warm embrace, making it ideal for leisurely strolls but potentially uncomfortable for extended outdoor activities.

September Average Humidity in Tomah

This chart illustrates the average monthly humidity levels in Tomah, 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 Tomah is approximately 74%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%85%84%83%75%79%75%69%74%79%88%82%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Tomah

In Tomah 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 Tomah.

Maximum UV Index Levels in Tomah for September

The chart shows the monthly maximum UV Index (UVI) for Tomah 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 Tomah typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec24589101097532
Data source: Tomah 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 Tomah Compares to Other Months

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

This table compares monthly weather conditions in Tomah, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-7°C (19°F)37 mm (1.5 inches)84%low
February Weather-6°C (21°F)53 mm (2.1 inches)85%moderate
March Weather1°C (35°F)59 mm (2.3 inches)84%moderate
April Weather7°C (45°F)89 mm (3.5 inches)83%very high
May Weather15°C (59°F)134 mm (5.3 inches)75%very high
June Weather21°C (70°F)116 mm (4.6 inches)79%very high
July Weather23°C (74°F)101 mm (4.0 inches)75%very high
August Weather21°C (70°F)112 mm (4.4 inches)69%very high
September Weather18°C (64°F)106 mm (4.2 inches)74%high
October Weather10°C (50°F)106 mm (4.2 inches)79%moderate
November Weather2°C (35°F)51 mm (2.0 inches)88%moderate
December Weather-3°C (27°F)45 mm (1.8 inches)82%low

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