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September Weather in Douglas, United States

Last updated: June 24, 2025

In September, the average temperature in Douglas, United States hovers around 25°C (77°F). Expect a pleasant range, with minimums dipping to 12°C (53°F) and peaks reaching up to 37°C (100°F). During this month, precipitation averages 39 mm (1.5 in) over approximately 5 days, accompanied by an overall humidity level of 74%. Stay prepared for a mix of warm days and balmy nights!

September Temperature in Douglas

In September in Douglas, the average temperature is 25°C (77°F). Maximums can reach 37°C (100°F), while minimums can drop as low as 12°C (53°F). This climate makes Douglas an ideal destination for travelers seeking warm weather and diverse outdoor activities.

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

The chart illustrates September temperature patterns in Douglas, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Douglas, September typically has an average temperature of 25°C (77°F), with highs reaching up to 37°C (100°F) and lows dropping to around 12°C (53°F).
JanFebMarAprMayJunJulAugSepOctNovDec495259677584828177685950
Data source: Temperature data for Douglas 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 Douglas

In Douglas in September, the precipitation amount is 39 mm (1.5 in) spread over a duration of 5 days.

September Precipitation Trends in Douglas

The chart displays monthly precipitation patterns in Douglas, 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 Douglas, September typically receives around 39 mm (1.5 inches) of precipitation spread over approximately 5 days.
JanFebMarAprMayJunJulAugSepOctNovDec262623439566039193328
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Douglas

In Douglas in September humidity is 74%. With an average temperature of 25°C (77°F), this humidity feels like a warm, muggy blanket wrapping around you, making travel a bit more challenging as you find yourself sticky and in need of frequent breaks to hydrate and cool down.

September Average Humidity in Douglas

This chart illustrates the average monthly humidity levels in Douglas, 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 Douglas is approximately 74%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec79%76%66%51%42%37%51%64%74%71%79%85%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Douglas

In Douglas in September, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Douglas.

Maximum UV Index Levels in Douglas for September

The chart shows the monthly maximum UV Index (UVI) for Douglas 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 Douglas typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec5810121213121211965
Data source: Douglas 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 Douglas Compares to Other Months

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

This table compares monthly weather conditions in Douglas, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather9°C (49°F)26 mm (1.0 inches)79%moderate
February Weather11°C (52°F)26 mm (1.0 inches)76%very high
March Weather15°C (59°F)22 mm (0.9 inches)66%very high
April Weather20°C (68°F)4 mm (0.1 inches)51%extreme
May Weather24°C (75°F)3 mm (0.1 inches)42%extreme
June Weather29°C (84°F)9 mm (0.3 inches)37%extreme
July Weather28°C (83°F)56 mm (2.2 inches)51%extreme
August Weather27°C (81°F)60 mm (2.4 inches)64%extreme
September Weather25°C (77°F)39 mm (1.5 inches)74%extreme
October Weather20°C (69°F)19 mm (0.7 inches)71%very high
November Weather15°C (59°F)33 mm (1.3 inches)78%high
December Weather10°C (50°F)28 mm (1.1 inches)85%moderate

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