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September Weather in Fort Washakie, United States

Last updated: June 24, 2025

In September, the average temperature in Fort Washakie, United States hovers around 12°C (54°F). Expect a temperature range that can swing from a chilly -9°C (16°F) to a warm 31°C (88°F). Over the month, anticipate precipitation totaling 51 mm (2.0 in) spread across approximately 7 days, with an average humidity of 59%.

September Temperature in Fort Washakie

In September in Fort Washakie, the average temperature is 12°C (54°F). Maximum temperatures can reach up to 31°C (88°F), while minimums can drop as low as -9°C (16°F). Be prepared for a wide range of weather conditions if you're planning to travel during this time.

September Weather in Fort Washakie: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Fort Washakie, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Fort Washakie, September typically has an average temperature of 12°C (54°F), with highs reaching up to 31°C (88°F) and lows dropping to around -9°C (16°F).
JanFebMarAprMayJunJulAugSepOctNovDec222130354456646154373123
Data source: Temperature data for Fort Washakie 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 Fort Washakie

In Fort Washakie in September, the precipitation amount is 51 mm (2.0 in) over a period of 7 days.

September Precipitation Trends in Fort Washakie

The chart displays monthly precipitation patterns in Fort Washakie, 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 Fort Washakie, September typically receives around 51 mm (2.0 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec2443539012065626151493228
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Fort Washakie

In Fort Washakie in September, humidity is 59%. With an average temperature of 12°C (54°F), this humidity feels like a cool, refreshing breeze that slightly chills the air while adding a layer of moisture, making it ideal for leisurely exploration but possibly requiring a light jacket for comfort during outdoor activities.

September Average Humidity in Fort Washakie

This chart illustrates the average monthly humidity levels in Fort Washakie, 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 Fort Washakie is approximately 59%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec90%89%82%72%69%67%65%59%59%69%83%89%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Fort Washakie

In Fort Washakie 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 Fort Washakie.

Maximum UV Index Levels in Fort Washakie for September

The chart shows the monthly maximum UV Index (UVI) for Fort Washakie 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 Fort Washakie typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec36810111212119643
Data source: Fort Washakie 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 Fort Washakie Compares to Other Months

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

This table compares monthly weather conditions in Fort Washakie, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-6°C (22°F)24 mm (0.9 inches)90%moderate
February Weather-6°C (21°F)43 mm (1.7 inches)89%high
March Weather-1°C (30°F)53 mm (2.1 inches)82%very high
April Weather1°C (35°F)90 mm (3.5 inches)72%very high
May Weather6°C (44°F)120 mm (4.7 inches)69%extreme
June Weather14°C (57°F)65 mm (2.5 inches)67%extreme
July Weather18°C (64°F)62 mm (2.5 inches)65%extreme
August Weather16°C (62°F)61 mm (2.4 inches)59%extreme
September Weather12°C (54°F)51 mm (2.0 inches)59%very high
October Weather3°C (38°F)49 mm (1.9 inches)69%high
November Weather-1°C (31°F)32 mm (1.3 inches)83%moderate
December Weather-5°C (23°F)28 mm (1.1 inches)89%moderate

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