Colebrook weather in September 2025

Expect 18°C daytime maximum temperatures in the shade with on average 5 hours of sunshine per day in Colebrook in September. Check more long-term weather averages for Colebrook in September before you book your next holiday to New Hampshire in 2025/2026.

  • 18°C maximum daytime temperature in September in Colebrook18
    18°C max day temperature
  • 5 hours of sunshine per day
  • 11 days with some rainfall in September in Colebrook11
    11 days with some rainfall
  • 6°C minimum night-time temperature in September in Colebrook6
    6°C min night temperature
  • 12 hours of daylight per day in September in Colebrook12
    12 hours of daylight per day
  • No heat & humidity in September in Colebrook0
    No heat & humidity
  • 99 mm monthly rainfall in September in Colebrook99
    99 mm of monthly rainfall
  • UV (maximum) index 5 (Moderate) in September in Colebrook5
    5 (Moderate) UV index

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The September weather guide for New Hampshire (Colebrook) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C / mm)  |  Imperial (°F / inches)

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How hot is it in Colebrook in September?

Daytime temperatures usually reach 18°C in Colebrook in September, falling to 6°C at night.

How sunny is it in Colebrook in September?

There are normally 5 hours of bright sunshine each day in Colebrook in September - that's 43% of daylight hours.

Does it rain in Colebrook in September?

There are usually 11 days with some rain in Colebrook in September and the average monthly rainfall is 99mm.

What is the chance of a hurricane in Colebrook in September?

On average less than 1 day in September in Colebrook is likely to be affected by the passage of one or more tropical storms.

Colebrook September sunrise & sunset times

Browse the sunrise and sunset times for Colebrook in September 2025. Select a month to view Colebrook sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:08 18:22
Monday, 15th September 2025 05:25 17:56
Tuesday, 30th September 2025 05:43 17:28

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