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September Weather in Fairchild Air Force Base, United States

Last updated: June 24, 2025

In Fairchild Air Force Base, United States, the average temperature in September hovers around 17°C (63°F). Expect chilly nights with minimums dropping to 2°C (35°F), while daytime can heat up to a warm 35°C (95°F). The month also brings about 24 mm (1.0 in) of precipitation spread across 5 days, contributing to an average humidity of 60%. Perfect for planning your next adventure!

September Temperature in Fairchild Air Force Base

In September, in Fairchild Air Force Base, the average temperature is 17°C (63°F). The maximum can reach 35°C (95°F), while the minimum can drop as low as 2°C (35°F). Be prepared for varying weather conditions to make the most of your travels.

September Weather in Fairchild Air Force Base: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Fairchild Air Force Base, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Fairchild Air Force Base, September typically has an average temperature of 17°C (63°F), with highs reaching up to 35°C (95°F) and lows dropping to around 2°C (35°F).
JanFebMarAprMayJunJulAugSepOctNovDec313140485967757363483932
Data source: Temperature data for Fairchild Air Force Base 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 Fairchild Air Force Base

In Fairchild Air Force Base in September, the precipitation amount is 24 mm (1.0 in) spread over the course of 5 days.

September Precipitation Trends in Fairchild Air Force Base

The chart displays monthly precipitation patterns in Fairchild Air Force Base, 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 Fairchild Air Force Base, September typically receives around 24 mm (1.0 inches) of precipitation spread over approximately 5 days.
JanFebMarAprMayJunJulAugSepOctNovDec64595345431831124477061
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Fairchild Air Force Base

In Fairchild Air Force Base in September humidity is 60%. With an average temperature of 17°C (63°F), this humidity feels like a slight weight in the air, making it perfect for leisurely strolls but a bit sticky for intense outdoor activities.

September Average Humidity in Fairchild Air Force Base

This chart illustrates the average monthly humidity levels in Fairchild Air Force Base, 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 Fairchild Air Force Base is approximately 60%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%86%86%82%77%79%77%62%60%80%87%86%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Fairchild Air Force Base

In Fairchild Air Force Base in September, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Fairchild Air Force Base.

Maximum UV Index Levels in Fairchild Air Force Base for September

The chart shows the monthly maximum UV Index (UVI) for Fairchild Air Force Base 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 Fairchild Air Force Base typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2456891097532
Data source: Fairchild Air Force Base 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 Fairchild Air Force Base Compares to Other Months

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

This table compares monthly weather conditions in Fairchild Air Force Base, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather0°C (32°F)64 mm (2.5 inches)85%low
February Weather-1°C (31°F)59 mm (2.3 inches)86%moderate
March Weather5°C (41°F)53 mm (2.1 inches)86%moderate
April Weather9°C (48°F)44 mm (1.8 inches)82%high
May Weather15°C (59°F)43 mm (1.7 inches)77%very high
June Weather19°C (67°F)18 mm (0.7 inches)79%very high
July Weather24°C (75°F)3 mm (0.1 inches)77%very high
August Weather23°C (74°F)11 mm (0.4 inches)62%very high
September Weather17°C (63°F)24 mm (1.0 inches)60%high
October Weather9°C (48°F)47 mm (1.9 inches)80%moderate
November Weather4°C (39°F)70 mm (2.8 inches)87%moderate
December Weather0°C (32°F)61 mm (2.4 inches)86%low

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