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September Weather in Douglas, United States

Last updated: June 24, 2025

In September, the average temperature in Douglas, United States is a comfortable 19°C (66°F). Expect a minimum of 10°C (51°F) and a maximum of 27°C (80°F) during this time. Be prepared for some rain, as 99 mm (3.9 in) of precipitation is likely over 10 days. With an average humidity of 79%, it’s a great time to enjoy the local atmosphere while staying hydrated!

September Temperature in Douglas

In September in Douglas, the average temperature is 19°C (66°F). Maximums can reach 27°C (80°F), while minimums can be as low as 10°C (51°F). This mild climate makes it an ideal time for outdoor activities and exploring the local attractions.

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 19°C (66°F), with highs reaching up to 27°C (80°F) and lows dropping to around 10°C (51°F).
JanFebMarAprMayJunJulAugSepOctNovDec292935405163707166554235
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 total precipitation amount is 99 mm (3.9 in) spread over a period of 10 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 99 mm (3.9 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec8486791061351226759991659587
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 79%. With an average temperature of 19°C (66°F), this humidity feels like a warm embrace, making it feel much warmer than the actual temperature and creating a heavy, sticky atmosphere that can be a bit uncomfortable for traveling.

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 79%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%87%86%87%82%81%78%79%80%82%87%86%
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 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 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 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec24589101097532
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 Weather-2°C (29°F)84 mm (3.3 inches)87%low
February Weather-2°C (29°F)85 mm (3.4 inches)87%moderate
March Weather1°C (35°F)79 mm (3.1 inches)86%moderate
April Weather5°C (41°F)106 mm (4.2 inches)87%very high
May Weather10°C (51°F)135 mm (5.3 inches)82%very high
June Weather17°C (63°F)122 mm (4.8 inches)81%very high
July Weather21°C (71°F)67 mm (2.6 inches)78%very high
August Weather22°C (71°F)58 mm (2.3 inches)79%very high
September Weather19°C (66°F)99 mm (3.9 inches)79%high
October Weather13°C (55°F)165 mm (6.5 inches)82%moderate
November Weather5°C (42°F)95 mm (3.8 inches)87%moderate
December Weather2°C (36°F)87 mm (3.4 inches)86%low

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