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September Weather in Sheridan, United States

Last updated: June 24, 2025

In September, the average temperature in Sheridan, United States hovers around 12°C (54°F). Be prepared for a temperature range that can dip as low as -6°C (22°F) or soar up to 33°C (91°F). During this month, expect about 34 mm (1.3 in) of precipitation spread over 6 days, and experience an average humidity level of 67%. Stay comfortable and enjoy the varied climate!

September Temperature in Sheridan

In September in Sheridan, the average temperature is 12°C (54°F), with maximums reaching up to 33°C (91°F) and minimums dropping as low as -6°C (22°F). This diverse range in temperatures makes Sheridan an interesting destination for travelers who enjoy both warm and cool climates.

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

The chart illustrates September temperature patterns in Sheridan, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sheridan, September typically has an average temperature of 12°C (54°F), with highs reaching up to 33°C (91°F) and lows dropping to around -6°C (22°F).
JanFebMarAprMayJunJulAugSepOctNovDec171628354657666354372818
Data source: Temperature data for Sheridan 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 Sheridan

In Sheridan in September, the total precipitation amount is 34 mm (1.3 in) spread over 6 days.

September Precipitation Trends in Sheridan

The chart displays monthly precipitation patterns in Sheridan, 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 Sheridan, September typically receives around 34 mm (1.3 inches) of precipitation spread over approximately 6 days.
JanFebMarAprMayJunJulAugSepOctNovDec194632567876242934432927
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Sheridan

In Sheridan in September, humidity is 67%. With an average temperature of 12°C (54°F), this humidity feels like a cool, damp blanket wrapping around you, making it essential to layer your clothing for comfort while exploring.

September Average Humidity in Sheridan

This chart illustrates the average monthly humidity levels in Sheridan, 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 Sheridan is approximately 67%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec93%92%90%83%79%76%74%69%67%72%89%94%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Sheridan

In Sheridan 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 Sheridan.

Maximum UV Index Levels in Sheridan for September

The chart shows the monthly maximum UV Index (UVI) for Sheridan 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 Sheridan typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3579101110108642
Data source: Sheridan 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 Sheridan Compares to Other Months

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

This table compares monthly weather conditions in Sheridan, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-8°C (17°F)19 mm (0.7 inches)93%moderate
February Weather-9°C (16°F)46 mm (1.8 inches)92%moderate
March Weather-2°C (28°F)32 mm (1.3 inches)89%high
April Weather2°C (35°F)56 mm (2.2 inches)83%very high
May Weather8°C (47°F)78 mm (3.1 inches)79%very high
June Weather14°C (57°F)75 mm (3.0 inches)76%extreme
July Weather19°C (66°F)24 mm (0.9 inches)74%very high
August Weather17°C (64°F)29 mm (1.1 inches)69%very high
September Weather12°C (54°F)34 mm (1.3 inches)67%very high
October Weather3°C (38°F)43 mm (1.7 inches)72%high
November Weather-2°C (28°F)29 mm (1.1 inches)89%moderate
December Weather-8°C (18°F)27 mm (1.1 inches)94%low

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