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September Weather in Fort Carson, United States

Last updated: June 24, 2025

In September, the average temperature in Fort Carson, United States hovers around 17°C (64°F). Expect temperatures to range from a chilly -2°C (29°F) to a warm 34°C (93°F). With an average humidity of 79%, you might feel a bit sticky, especially with 30 mm (1.2 in) of precipitation sprinkled over 5 days. Prepare accordingly for a mix of weather!

September Temperature in Fort Carson

In September in Fort Carson, the average temperature is 17°C (64°F). Maximum temperatures can reach 34°C (93°F), while the minimum can drop to as low as -2°C (29°F). This wide range of temperatures means travelers should be prepared for both warm and chilly conditions.

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

The chart illustrates September temperature patterns in Fort Carson, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Fort Carson, September typically has an average temperature of 17°C (64°F), with highs reaching up to 34°C (93°F) and lows dropping to around -2°C (29°F).
JanFebMarAprMayJunJulAugSepOctNovDec292838455567716963473731
Data source: Temperature data for Fort Carson 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 Carson

In Fort Carson in September, the precipitation amount is 30 mm (1.2 in) over the course of 5 days.

September Precipitation Trends in Fort Carson

The chart displays monthly precipitation patterns in Fort Carson, 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 Carson, September typically receives around 30 mm (1.2 inches) of precipitation spread over approximately 5 days.
JanFebMarAprMayJunJulAugSepOctNovDec142145467237775630311710
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Fort Carson

In Fort Carson in September humidity is 79%. With an average temperature of 17°C (64°F), this humidity feels like a warm blanket wrapped around you, making outdoor activities feel a bit muggy and requiring frequent hydration as you explore the sights.

September Average Humidity in Fort Carson

This chart illustrates the average monthly humidity levels in Fort Carson, 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 Carson is approximately 79%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec74%75%66%62%74%76%75%80%79%77%74%80%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Fort Carson

In Fort Carson in September, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Fort Carson.

Maximum UV Index Levels in Fort Carson for September

The chart shows the monthly maximum UV Index (UVI) for Fort Carson 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 Carson typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec469111213121110754
Data source: Fort Carson 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 Carson Compares to Other Months

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

This table compares monthly weather conditions in Fort Carson, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-2°C (29°F)14 mm (0.6 inches)74%moderate
February Weather-2°C (28°F)21 mm (0.8 inches)75%high
March Weather3°C (38°F)45 mm (1.8 inches)66%very high
April Weather7°C (45°F)46 mm (1.8 inches)62%extreme
May Weather13°C (55°F)72 mm (2.8 inches)74%extreme
June Weather19°C (67°F)37 mm (1.5 inches)76%extreme
July Weather21°C (71°F)77 mm (3.0 inches)75%extreme
August Weather21°C (69°F)56 mm (2.2 inches)80%extreme
September Weather17°C (64°F)30 mm (1.2 inches)79%very high
October Weather8°C (47°F)31 mm (1.2 inches)77%high
November Weather3°C (38°F)17 mm (0.7 inches)74%moderate
December Weather-1°C (31°F)10 mm (0.4 inches)80%moderate

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