Wausau weather in September 2025

Expect 68°F daytime maximum temperatures in the shade with on average 7 hours of sunshine per day in Wausau in September. Check more long-term weather averages for Wausau in September before you book your next holiday to Wisconsin in 2025/2026.

  • 68°F maximum daytime temperature in September in Wausau68
    68°F max day temperature
  • 7 hours of sunshine per day
  • 11 days with some rainfall in September in Wausau11
    11 days with some rainfall
  • 48°F minimum night-time temperature in September in Wausau48
    48°F min night temperature
  • 12 hours of daylight per day in September in Wausau12
    12 hours of daylight per day
  • No heat & humidity in September in Wausau0
    No heat & humidity
  • 4.1 inches monthly rainfall in September in Wausau4.1
    4.1 inches of monthly rainfall
  • UV (maximum) index 5 (Moderate) in September in Wausau5
    5 (Moderate) UV index

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The September weather guide for Wisconsin (Wausau) 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 Wausau in September?

Daytime temperatures usually reach 68°F in Wausau in September, falling to 48°F at night.

How sunny is it in Wausau in September?

There are normally 7 hours of bright sunshine each day in Wausau in September - that's 53% of daylight hours.

Does it rain in Wausau in September?

There are usually 11 days with some rain in Wausau in September and the average monthly rainfall is 4.1 inches.

Wausau September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:21 18:35
Monday, 15th September 2025 05:38 18:09
Tuesday, 30th September 2025 05:56 17:40

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