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September Weather in Eagle Butte, United States

Last updated: June 24, 2025

In Eagle Butte, United States, the average temperature in September hovers around 18°C (64°F). However, temperatures can swing dramatically, with minimums dipping to -1°C (30°F) and maxing out at a sizzling 36°C (98°F). Expect some rainfall, with an average of 41 mm (1.6 in) over about 5 days during the month, contributing to an average humidity of 73%.

September Temperature in Eagle Butte

In September in Eagle Butte, the average temperature is 18°C (64°F). The maximum can reach 36°C (98°F) and the minimum can be as low as -1°C (30°F). Travelers should be prepared for a wide range of temperatures during this time.

September Weather in Eagle Butte: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Eagle Butte, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Eagle Butte, September typically has an average temperature of 18°C (64°F), with highs reaching up to 36°C (98°F) and lows dropping to around -1°C (30°F).
JanFebMarAprMayJunJulAugSepOctNovDec191632425771767264453425
Data source: Temperature data for Eagle Butte 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 Eagle Butte

In Eagle Butte in September, the precipitation amount is 41 mm (1.6 in) over a period of 5 days.

September Precipitation Trends in Eagle Butte

The chart displays monthly precipitation patterns in Eagle Butte, 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 Eagle Butte, September typically receives around 41 mm (1.6 inches) of precipitation spread over approximately 5 days.
JanFebMarAprMayJunJulAugSepOctNovDec132035507661835341521124
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Eagle Butte

In Eagle Butte in September, humidity is 73%. With an average temperature of 18°C (64°F), this humidity feels like a warm, sticky embrace that can leave travelers feeling a bit sluggish, making outdoor activities feel more demanding and encouraging frequent breaks to hydrate and cool off.

September Average Humidity in Eagle Butte

This chart illustrates the average monthly humidity levels in Eagle Butte, 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 Eagle Butte is approximately 73%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec78%81%72%73%75%82%83%82%73%71%78%76%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Eagle Butte

In Eagle Butte 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 Eagle Butte.

Maximum UV Index Levels in Eagle Butte for September

The chart shows the monthly maximum UV Index (UVI) for Eagle Butte 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 Eagle Butte typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec25579101098532
Data source: Eagle Butte 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 Eagle Butte Compares to Other Months

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

This table compares monthly weather conditions in Eagle Butte, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-7°C (19°F)13 mm (0.5 inches)78%low
February Weather-9°C (17°F)20 mm (0.8 inches)81%moderate
March Weather0°C (33°F)35 mm (1.4 inches)71%moderate
April Weather6°C (43°F)50 mm (2.0 inches)73%high
May Weather14°C (57°F)76 mm (3.0 inches)75%very high
June Weather22°C (71°F)61 mm (2.4 inches)82%very high
July Weather25°C (76°F)83 mm (3.3 inches)83%very high
August Weather22°C (72°F)53 mm (2.1 inches)82%very high
September Weather18°C (64°F)41 mm (1.6 inches)73%very high
October Weather7°C (46°F)52 mm (2.0 inches)71%moderate
November Weather1°C (35°F)11 mm (0.4 inches)78%moderate
December Weather-4°C (26°F)24 mm (1.0 inches)76%low

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