Wisconsin

Wisconsin Weather in May

Average temperatures, rainfall, sunshine and the best places to visit in Wisconsin, the United States of America in May.

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Lake Geneva Brookfield Oak Creek Pleasant Prairie

Thinking about venturing to Wisconsin, the United States of America this May and curious about the weather conditions to expect? This page holds all the key information you seek, responding to your question:

What to Expect in Wisconsin in May

Wisconsin, the United States of America is a region in the United States of America. May in Wisconsin generally has temperatures that range from mild to pleasant, with precipitation levels ranging from moderate to high.

Temperatures

During the day temperatures vary from mild in Superior at 14°C (57°F) to pleasant in Lodi at 22°C (72°F). At night it cools down to 8°C (46°F) in Lodi and 4°C (39°F) in Superior.

To learn more about the conditions in specific areas of Wisconsin, the United States of America, check out the map below.

Precipitation

In May, precipitation varies across different areas. From moderate rainfall in Egg Harbor with an average of 73 mm (2.9 in) to high rainfall in Onalaska with 118 mm (4.6 in).

Average sunshine

Several destinations enjoy plenty of sunshine this month. Lake Geneva sees close to 276 hours of sunlight, making it great for sun lovers.

Explore Wisconsin by month

Pick a month to see the average temperature, rainfall and sunshine in Wisconsin - and find the best time to visit. (based on Lake Geneva)

January-2°C (28°F) February-2°C (28°F) March7°C (45°F) April14°C (57°F) May21°C (70°F) June26°C (79°F) This monthJuly28°C (82°F) August27°C (81°F) September23°C (73°F) October16°C (61°F) November8°C (46°F) December1°C (34°F)
Best Time to Visit Wisconsin →

Best Places to Visit in Wisconsin in May

Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across Wisconsin.

Conditions Temperatures Precipitation
perfect weather
pleasant
tolerable
unpleasant
poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

Popular Destinations in Wisconsin

What is the weather like in May for some of the most popular destinations in Wisconsin, the United States of America?

Temperature range in Wisconsin (May)

Precipitation variation in Wisconsin (May)

Lake Geneva

In May Lake Geneva generally has pleasant temperatures with maximum daytime temperatures around 21°C (70°F), minimum nighttime temperatures around 9°C (48°F) and moderate monthly rainfall. So on average the conditions are excellent that month.

« April
May
June »
April
May
June
Max temperature
14°C (57°F)
21°C (70°F)
26°C (79°F)
Min temperature
2°C (36°F)
9°C (48°F)
14°C (57°F)
Monthly sun hours
215 hours
276 hours
305 hours
Monthly rainfall
107 mm (4.2 in)
90 mm (3.5 in)
133 mm (5.2 in)
Monthly rainy days
13 days
13 days
13 days
Weather conditions
mixed
excellent
very good
Climate in Lake Geneva →

Brookfield

In May Brookfield generally has pleasant temperatures with maximum daytime temperatures around 20°C (68°F), minimum nighttime temperatures around 8°C (46°F) and moderate monthly rainfall. So on average the conditions are excellent that month.

« April
May
June »
April
May
June
Max temperature
13°C (55°F)
20°C (68°F)
25°C (77°F)
Min temperature
2°C (36°F)
8°C (46°F)
14°C (57°F)
Monthly sun hours
215 hours
276 hours
305 hours
Monthly rainfall
117 mm (4.6 in)
90 mm (3.5 in)
143 mm (5.6 in)
Monthly rainy days
13 days
13 days
12 days
Weather conditions
less favorable
excellent
very good
Climate in Brookfield →

Oak Creek

In May Oak Creek generally has pleasant temperatures with maximum daytime temperatures around 18°C (64°F), minimum nighttime temperatures around 9°C (48°F) and moderate monthly rainfall. So on average the conditions are very good that month.

« April
May
June »
April
May
June
Max temperature
12°C (54°F)
18°C (64°F)
24°C (75°F)
Min temperature
3°C (37°F)
9°C (48°F)
14°C (57°F)
Monthly sun hours
215 hours
276 hours
305 hours
Monthly rainfall
115 mm (4.5 in)
83 mm (3.3 in)
117 mm (4.6 in)
Monthly rainy days
13 days
12 days
12 days
Weather conditions
less favorable
very good
very good
Climate in Oak Creek →

Pleasant Prairie

In May Pleasant Prairie generally has pleasant temperatures with maximum daytime temperatures around 20°C (68°F), minimum nighttime temperatures around 8°C (46°F) and moderate monthly rainfall. So on average the conditions are excellent that month.

« April
May
June »
April
May
June
Max temperature
13°C (55°F)
20°C (68°F)
25°C (77°F)
Min temperature
2°C (36°F)
8°C (46°F)
14°C (57°F)
Monthly sun hours
215 hours
276 hours
305 hours
Monthly rainfall
102 mm (4 in)
85 mm (3.3 in)
105 mm (4.1 in)
Monthly rainy days
12 days
13 days
13 days
Weather conditions
less favorable
excellent
very good
Climate in Pleasant Prairie →

Janesville

In May Janesville generally has pleasant temperatures with maximum daytime temperatures around 21°C (70°F), minimum nighttime temperatures around 9°C (48°F) and moderate monthly rainfall. So on average the conditions are excellent that month.

« April
May
June »
April
May
June
Max temperature
14°C (57°F)
21°C (70°F)
26°C (79°F)
Min temperature
3°C (37°F)
9°C (48°F)
14°C (57°F)
Monthly sun hours
211 hours
266 hours
297 hours
Monthly rainfall
107 mm (4.2 in)
93 mm (3.7 in)
139 mm (5.5 in)
Monthly rainy days
13 days
13 days
13 days
Weather conditions
mixed
excellent
very good
Climate in Janesville →

Is your destination not in the list? Have a look at all destinations in Wisconsin, in the United States of America.

Popular cities in May

Day & night temperatures, rainfall and average weather in Wisconsin in May.

City Weather Day temp Night temp Rainfall
Lake Geneva 21°C (70°F) 9°C (48°F) 90 mm (3.5 in)
Brookfield 20°C (68°F) 8°C (46°F) 90 mm (3.5 in)
Oak Creek 18°C (64°F) 9°C (48°F) 83 mm (3.3 in)
Pleasant Prairie 20°C (68°F) 8°C (46°F) 85 mm (3.3 in)
Janesville 21°C (70°F) 9°C (48°F) 93 mm (3.7 in)
Racine 17°C (63°F) 9°C (48°F) 85 mm (3.3 in)

Wisconsin weather in May: frequently asked questions

What is the weather like in Wisconsin, the United States of America in May?

In May, Wisconsin, the United States of America generally has excellent weather conditions. Lake Geneva sees daytime temperatures near 21°C (70°F), with nights cooling to roughly 9°C (48°F).

What is the average temperature in Wisconsin, the United States of America in May?

Average temperatures in Wisconsin, the United States of America during May range from a nighttime low near 9°C (48°F) to a daytime high around 21°C (70°F) in Lake Geneva.

Does Wisconsin, the United States of America get a lot of rain in May?

Rain is generally moderate to light in Wisconsin, the United States of America during May, with Lake Geneva averaging close to 90 mm (3.5 in).

Is May a Good Time to Visit Wisconsin, the United States of America?

We consider May to be one of the best times to travel to Wisconsin, the United States of America. Typically, the climate in Lake Geneva is excellent. However, the weather conditions may vary depending on your destination.

Generally speaking, the best visiting conditions can be found in May, July and September offering mostly excellent weather in Lake Geneva. On the other hand, the months of January, February, March, November and December tend to have less favorable weather conditions.

Interested in more climate information?

We have much more information about the climate in Wisconsin.

Weather and climate has detailed information for every country in the world. Are you going to the United States of America? Get detailed historical weather averages for many cities in the United States of America.

Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.

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