Portage Weather in May

What's the weather like in Portage (Wisconsin) in May 2025?

The climate in Portage during May can be summarized as mild and a little damp.

May is in the spring in Portage and is typically the 5th warmest month of the year. Daytime maximum temperatures average around 21°C (69°F), whilst at night 7°C (45°F) is normal.

Portage weather averages (imperial / metric)
Daytime temperature 20.6°C 69.1°F
Nightly temperature 7°C 44.6°F
Average temperature 13.8°C 56.8°F
Daily sunshine 9.4 hrs
Avg rainfall 82 mm 3.2 ins
Rainy days 11 days
Sea temperature 6.8°C 44.2°F
Humidity 66%
Windspeed 16.6kph 10 mph

On average May is the 5th wettest month of the year in Portage with around 82mm 3.2 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 11 days, although this may vary considerably.

On the flip side this corresponds to an average of 9.4 hours of sunshine per day.

May temperatures in Portage

Portage average temperature in May

May rainfall

Portage average rain in May

May hourly sunshine

Portage average rain in May

The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Portage in May 2025.

Other monthly averages

Best places to visit in May

UV index Best time to go?

Beta

Current (hourly) weather 15 day forecast

Portage weather stats

Portage weather statistics
Hottest month: July 28°C 82.4°F
Driest month: January 26mm 1ins
Sunniest month: July 10.7hrs
Coldest month: January -4.5°C 23.9°F
Wettest month: August 101mm 4ins
Map showing location of Portage (43.53915, -89.46262) Portage map pin © Google

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