The weather in May in Wisconsin

It's pleasantly warm in May in Wisconsin with an average temperature of 21°C. Temperatures this month range from a low of 16°C to a high of 28°C. At night, you can expect temperatures between 7°C and 16°C.

Looking for sun? May isn’t a good month to be in Wisconsin. The temperature is nice, but there’s too much chance of rain.

Average temperatures and precipitation

This chart shows the average daily maximum and minimum temperatures (in degrees Celsius) and precipitation (in millimeters) in May for Wisconsin, United States. A low precipitation value usually indicates little to no rainfall on that day in recent years, while a higher value suggests more frequent rainfall.

Temperature records

With 34°C in 2018, Wisconsin reached the highest temperature in May over the past 10 years. The lowest daytime temperature in this month was 5°C in 2018. The extreme nighttime temperatures ranged from a lowest recorded value of -2°C to a highest value of 22°C.

Precipitation and snowfall

In May, there is an average of 219 mm of precipitation, spread over 19 days. Of the total precipitation, about 0,1 cm falls as snow in May. The wind speed is around 4 Bft, mostly coming from the South.

Daily weather in May for Wisconsin

Click on any day in May to get detailed info about the usual weather on that day in Wisconsin. Check out the historical temperatures and precipitation over the past 10 years on this day.

May weather comparison

  Wisconsin New York
Average temperature 21°C 22°C
Max. temperature 28°C 28°C
Min. temperature 7°C -5°C
Total precipitation 219 mm 105 mm
Rainy days 19 days 14 days
Total snowfall 0,1 cm 0 cm
Snowy days 1 day 0 days

Start of May

The month of May starts in Wisconsin with mild temps, averaging around 19°C during the day and nights around 9°C.

Mid May

By mid-May, daytime temps rise to around 20°C, with nights around 10°C. During this part of the month, you might see regular precipitation, but there will also be some sunny days.

End of May

By the end of May, the average daytime temperature in Wisconsin is around 26°C, while nighttime temps are about 14°C. Expect regular precipitation, but if you’re lucky, you’ll also get some dry and sunny days.

Find affordable vacations to Wisconsin

UV index

The UV index is a maximum of 7 this month. That's a moderate to high value on the intensity scale of 1 to 11. Unprotected skin can burn within 15-25 minutes.

Check out the climate of Wisconsin for all months and discover the best travel time

The climate in Wisconsin is based on weather data from . Other places, like New York City, Miami or Los Angeles, might have different weather. You can check out all destinations in Wisconsin to get the full picture of the climate.

Temperature charts

These charts show the average temperatures in May in Wisconsin, United States. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.

Daily Temperature in May in Wisconsin

Temperature in May in Wisconsin over the years

Precipitation charts

These charts show the average amount of precipitation in May in Wisconsin, United States. Precipitation is always measured as water, even when it falls as snow or hail The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.

Daily Precipitation in May in Wisconsin

Total precipitation in May in Wisconsin over the years

Daily Snowfall in May in Wisconsin

Snowfall in May in Wisconsin per year

Daily UV index in May in Wisconsin

This chart shows the average daily UV index in May in Wisconsin, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.

Weather experiences in May in Wisconsin

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Average weather in Wisconsin by month

Click on a month below to see detailed weather info for Wisconsin. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.