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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 25°C (77°F). However, temperatures can vary, dipping to a cool 10°C (49°F) and soaring to a scorching 39°C (102°F). Expect around 100 mm (3.9 in) of precipitation spread across 7 days, accompanied by an average humidity of 59%. Stay prepared for the fluctuating weather!

September Temperature in Sheridan

In September in Sheridan, the average temperature is 25°C (77°F). Maximum temperatures can reach 39°C (102°F), while minimums can drop as low as 10°C (49°F). Overall, it's advisable to prepare for a range of temperatures to enjoy your travels comfortably.

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 25°C (77°F), with highs reaching up to 39°C (102°F) and lows dropping to around 10°C (49°F).
JanFebMarAprMayJunJulAugSepOctNovDec444757627280828177655249
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 precipitation amount is 100 mm (3.9 in) over a span of 7 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 100 mm (3.9 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec9815315917115311610011510010879158
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 59%. With an average temperature of 25°C (77°F), this humidity feels like a warm embrace, making it ideal for leisurely strolls while exploring the sights, though you might want to stay hydrated and take breaks in the shade to fully enjoy the experience.

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 59%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%79%77%78%82%81%75%61%59%69%82%88%
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 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check 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 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec46810111111109754
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 Weather7°C (44°F)98 mm (3.8 inches)82%moderate
February Weather8°C (47°F)153 mm (6.0 inches)79%high
March Weather14°C (58°F)159 mm (6.3 inches)77%very high
April Weather17°C (62°F)171 mm (6.7 inches)78%very high
May Weather22°C (72°F)153 mm (6.0 inches)82%extreme
June Weather26°C (80°F)116 mm (4.6 inches)81%extreme
July Weather28°C (83°F)100 mm (3.9 inches)75%extreme
August Weather27°C (81°F)115 mm (4.5 inches)61%very high
September Weather25°C (77°F)100 mm (3.9 inches)59%very high
October Weather18°C (66°F)108 mm (4.3 inches)69%high
November Weather11°C (53°F)79 mm (3.1 inches)82%moderate
December Weather9°C (49°F)158 mm (6.2 inches)87%moderate

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