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September Weather in Anaconda, United States

Last updated: June 24, 2025

In September, the average temperature in Anaconda, United States is a mild 11°C (52°F), but you can expect a range from a chilly -7°C (19°F) to a warm 31°C (88°F). With 42 mm (1.6 in) of precipitation spread over 8 days, it's wise to carry an umbrella. The air carries an average humidity of 67%, making it a season of cool breezes and occasional showers.

September Temperature in Anaconda

In September in Anaconda, the average temperature is 11°C (52°F), with maximums reaching up to 31°C (88°F) and minimums dropping as low as -7°C (19°F). Travelers should prepare for a wide range of temperatures, ensuring they pack both light and warm clothing to stay comfortable.

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

The chart illustrates September temperature patterns in Anaconda, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Anaconda, September typically has an average temperature of 11°C (52°F), with highs reaching up to 31°C (88°F) and lows dropping to around -7°C (19°F).
JanFebMarAprMayJunJulAugSepOctNovDec211928344455636252372821
Data source: Temperature data for Anaconda 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 Anaconda

In Anaconda in September, the precipitation amount is 42 mm (1.6 in) over a span of 8 days.

September Precipitation Trends in Anaconda

The chart displays monthly precipitation patterns in Anaconda, 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 Anaconda, September typically receives around 42 mm (1.6 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec3175537290107303542534644
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Anaconda

In Anaconda in September humidity is 67%. With an average temperature of 11°C (52°F), this humidity feels like a cool, damp embrace that can make you feel chilly and uncomfortable while traveling, especially if you're not dressed appropriately for the moisture in the air.

September Average Humidity in Anaconda

This chart illustrates the average monthly humidity levels in Anaconda, 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 Anaconda is approximately 67%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec93%92%89%85%80%78%77%66%67%77%89%95%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Anaconda

In Anaconda 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 Anaconda.

Maximum UV Index Levels in Anaconda for September

The chart shows the monthly maximum UV Index (UVI) for Anaconda 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 Anaconda typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec346810111098532
Data source: Anaconda 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 Anaconda Compares to Other Months

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

This table compares monthly weather conditions in Anaconda, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-6°C (21°F)31 mm (1.2 inches)93%moderate
February Weather-7°C (19°F)75 mm (2.9 inches)92%moderate
March Weather-2°C (29°F)53 mm (2.1 inches)89%high
April Weather1°C (34°F)72 mm (2.8 inches)85%very high
May Weather7°C (44°F)90 mm (3.5 inches)80%very high
June Weather13°C (55°F)107 mm (4.2 inches)78%extreme
July Weather17°C (64°F)30 mm (1.2 inches)77%very high
August Weather16°C (62°F)35 mm (1.4 inches)66%very high
September Weather11°C (52°F)42 mm (1.6 inches)67%very high
October Weather3°C (37°F)53 mm (2.1 inches)77%moderate
November Weather-2°C (28°F)46 mm (1.8 inches)89%moderate
December Weather-6°C (21°F)44 mm (1.7 inches)95%low

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