Wisconsin weather in May 2025

Expect 66°F daytime maximum temperatures in the shade with on average 9 hours of sunshine per day in Wisconsin in May. Check more long-term weather averages for Wisconsin in May before you book your next holiday to Wisconsin in 2025/2026.

  • 66°F maximum daytime temperature in May in Wisconsin (Milwaukee)66
    66°F max day temperature
  • 9 hours of sunshine per day
  • 11 days with some rainfall in May in Wisconsin (Milwaukee)11
    11 days with some rainfall
  • 46°F minimum night-time temperature in May in Wisconsin (Milwaukee)46
    46°F min night temperature
  • 15 hours of daylight per day in May in Wisconsin (Milwaukee)15
    15 hours of daylight per day
  • No heat & humidity in May in Wisconsin (Milwaukee)0
    No heat & humidity
  • 2.8 inches monthly rainfall in May in Wisconsin (Milwaukee)2.8
    2.8 inches of monthly rainfall
  • UV (maximum) index 7 (High) in May in Wisconsin (Milwaukee)7
    7 (High) UV index
  • 41°F sea temperature in May in Wisconsin (Milwaukee)41
    41°F sea temperature

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The May weather guide for Wisconsin (Milwaukee) 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.

Top Wisconsin destinations

Below are average maximum temperatures at popular countries, regions and places in Wisconsin in May. Select a holiday destination to see more weather parameters.

All Wisconsin destinations

Metric (°C)  |  Imperial (°F)

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More about the USA

How hot is it in Wisconsin in May?

Daytime temperatures usually reach 66°F in Milwaukee, Wisconsin in May, falling to 46°F at night.

How sunny is it in Wisconsin in May?

There are normally 9 hours of bright sunshine each day in Milwaukee, Wisconsin in May - that's 61% of daylight hours.

How warm is the sea around Wisconsin in May?

The average sea temperature around Milwaukee, Wisconsin in May is 41°F.

Does it rain in Wisconsin in May?

There are usually 11 days with some rain in Milwaukee, Wisconsin in May and the average monthly rainfall is 2.8 inches.

Wisconsin May sunrise & sunset times

Browse the sunrise and sunset times for Wisconsin in May 2025. Select a month to view Wisconsin sunrise and sunset times for the next 12 months. The Wisconsin sunrise and sunset times shown below are for Milwaukee.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Thursday, 1st May 2025 04:45 18:53
Friday, 16th May 2025 04:27 19:10
Saturday, 31st May 2025 04:15 19:24

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