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September Weather in Darrington, United States

Last updated: June 24, 2025

In September, the average temperature in Darrington, United States is a comfortable 12°C (54°F). However, temperatures can vary significantly, with a minimum of 1°C (33°F) and a maximum soaring to 31°C (88°F). Precipitation can be expected with an average of 154 mm (6.1 in) over 14 days, and the overall humidity sits at a considerable 76%.

September Temperature in Darrington

In September in Darrington, the average temperature is 12°C (54°F). Maximums can reach 31°C (88°F), while minimums can drop as low as 1°C (33°F). This makes Darrington a versatile destination for travelers, offering a range of experiences from warm days to cool nights.

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

The chart illustrates September temperature patterns in Darrington, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Darrington, September typically has an average temperature of 12°C (54°F), with highs reaching up to 31°C (88°F) and lows dropping to around 1°C (33°F).
JanFebMarAprMayJunJulAugSepOctNovDec312935404954596053423630
Data source: Temperature data for Darrington 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 Darrington

In Darrington in September, the total precipitation amount is 154 mm (6.1 in) over a period of 14 days.

September Precipitation Trends in Darrington

The chart displays monthly precipitation patterns in Darrington, 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 Darrington, September typically receives around 154 mm (6.1 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec3213392442021181074538154285398366
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Darrington

In Darrington in September, humidity is 76%. With an average temperature of 12°C (54°F), this humidity feels like a heavy blanket enveloping you, making outdoor activities a bit uncomfortable and requiring frequent hydration while exploring.

September Average Humidity in Darrington

This chart illustrates the average monthly humidity levels in Darrington, 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 Darrington is approximately 76%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%86%88%86%82%82%85%77%76%88%88%89%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Darrington

In Darrington 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 Darrington.

Maximum UV Index Levels in Darrington for September

The chart shows the monthly maximum UV Index (UVI) for Darrington 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 Darrington typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235799987532
Data source: Darrington 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 Darrington Compares to Other Months

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

This table compares monthly weather conditions in Darrington, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather0°C (31°F)321 mm (12.6 inches)87%low
February Weather-2°C (29°F)339 mm (13.3 inches)86%moderate
March Weather2°C (35°F)244 mm (9.6 inches)88%moderate
April Weather5°C (41°F)202 mm (7.9 inches)86%high
May Weather9°C (49°F)118 mm (4.7 inches)82%very high
June Weather12°C (54°F)107 mm (4.2 inches)82%very high
July Weather15°C (59°F)45 mm (1.8 inches)85%very high
August Weather15°C (60°F)38 mm (1.5 inches)77%very high
September Weather12°C (54°F)154 mm (6.1 inches)76%high
October Weather6°C (43°F)285 mm (11.2 inches)88%moderate
November Weather2°C (36°F)398 mm (15.7 inches)88%moderate
December Weather-1°C (31°F)366 mm (14.4 inches)89%low

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