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September Weather in Colebrook, United States

Last updated: June 24, 2025

In Colebrook, United States, the average temperature in September hovers around 13°C (56°F), with extremes ranging from a chilly -4°C (24°F) to a warm 28°C (83°F). Travelers should prepare for 85 mm (3.3 in) of precipitation spread over 11 days, while the average humidity sits at a comfortable 77%. Be ready for varied weather this month!

September Temperature in Colebrook

In September in Colebrook, the average temperature is 13°C (56°F). Maximum temperatures can reach 28°C (83°F), while the minimum can drop as low as -4°C (24°F). Be prepared for a wide range of temperatures when traveling to Colebrook in September.

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

The chart illustrates September temperature patterns in Colebrook, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Colebrook, September typically has an average temperature of 13°C (56°F), with highs reaching up to 28°C (83°F) and lows dropping to around -4°C (24°F).
JanFebMarAprMayJunJulAugSepOctNovDec151825385160656356453020
Data source: Temperature data for Colebrook 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 Colebrook

In Colebrook in September, the total precipitation amount is 85 mm (3.3 in) over a span of 11 days.

September Precipitation Trends in Colebrook

The chart displays monthly precipitation patterns in Colebrook, 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 Colebrook, September typically receives around 85 mm (3.3 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec9489841231141211231118515211896
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Colebrook

In Colebrook in September humidity is 77%. With average temperature 13°C (56°F), this humidity feels like a damp blanket wrapping around you, making outdoor activities sweaty and uncomfortable.

September Average Humidity in Colebrook

This chart illustrates the average monthly humidity levels in Colebrook, 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 Colebrook is approximately 77%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%89%85%84%78%72%75%74%77%85%86%85%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Colebrook

In Colebrook 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 Colebrook.

Maximum UV Index Levels in Colebrook for September

The chart shows the monthly maximum UV Index (UVI) for Colebrook 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 Colebrook typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2457910987532
Data source: Colebrook 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 Colebrook Compares to Other Months

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

This table compares monthly weather conditions in Colebrook, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-9°C (15°F)94 mm (3.7 inches)91%low
February Weather-8°C (18°F)89 mm (3.5 inches)89%moderate
March Weather-4°C (25°F)84 mm (3.3 inches)85%moderate
April Weather3°C (38°F)123 mm (4.9 inches)84%high
May Weather11°C (52°F)114 mm (4.5 inches)78%very high
June Weather16°C (60°F)121 mm (4.8 inches)72%very high
July Weather18°C (66°F)123 mm (4.8 inches)75%very high
August Weather17°C (64°F)111 mm (4.4 inches)74%very high
September Weather13°C (56°F)85 mm (3.3 inches)77%high
October Weather7°C (45°F)151 mm (6.0 inches)85%moderate
November Weather-1°C (31°F)118 mm (4.6 inches)86%moderate
December Weather-7°C (21°F)96 mm (3.8 inches)85%low

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