Bayfield weather in September 2025

Expect 68°F daytime maximum temperatures in the shade with on average 6 hours of sunshine per day in Bayfield in September. Check more long-term weather averages for Bayfield in September before you book your next holiday to Wisconsin in 2025/2026.

  • 68°F maximum daytime temperature in September in Bayfield68
    68°F max day temperature
  • 6 hours of sunshine per day
  • 12 days with some rainfall in September in Bayfield12
    12 days with some rainfall
  • 45°F minimum night-time temperature in September in Bayfield45
    45°F min night temperature
  • 13 hours of daylight per day in September in Bayfield13
    13 hours of daylight per day
  • No heat & humidity in September in Bayfield0
    No heat & humidity
  • 3.8 inches monthly rainfall in September in Bayfield3.8
    3.8 inches of monthly rainfall
  • UV (maximum) index 5 (Moderate) in September in Bayfield5
    5 (Moderate) UV index
  • 57°F sea temperature in September in Bayfield57
    57°F sea temperature

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The September weather guide for Wisconsin (Bayfield) 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)  |  Imperial (°F)

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How hot is it in Bayfield in September?

Daytime temperatures usually reach 68°F in Bayfield in September, falling to 45°F at night.

How sunny is it in Bayfield in September?

There are normally 6 hours of bright sunshine each day in Bayfield in September - that's 50% of daylight hours.

How warm is the sea around Bayfield in September?

The average sea temperature around Bayfield in September is 57°F.

Does it rain in Bayfield in September?

There are usually 12 days with some rain in Bayfield in September and the average monthly rainfall is 3.8 inches.

Bayfield September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:23 18:42
Monday, 15th September 2025 05:41 18:14
Tuesday, 30th September 2025 06:01 17:44

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