Janesville Weather in May

Janesville in May sees pleasant daytime temperatures of 21°C (70°F) and nighttime lows of 9°C (48°F). Rainfall is fairly high this month at around 93 mm (3.7 in), so pack a rain jacket to stay dry.

Rainfall in Janesville in May

Expect around 13 days of rain based on historical data, with 93 mm (3.7 in) average. When it rains this month, it tends to come down fairly heavily. Showers can be substantial even if they don't last all day.

Temperature in Janesville in May

The perfect temperature in Janesville in May makes it a solid month to visit, with 21°C (70°F) during the day and 9°C (48°F) at night. Temperatures can feel cooler in the morning and evening, so layering is often the best approach. Nights fall to 9°C (48°F), which is cold enough to feel it indoors too. A good thick duvet makes all the difference for a comfortable night's sleep.

Sunshine in Janesville in May

There are approximately 266 hours of sunshine this month, resulting in mostly clear days.

So this is a great month to visit if you prefer dry days with pleasant temperatures.

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• January
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For a detailed overview over the year and the best time to visit the United States of America, check out our Janesville's climate page.

Janesville Temperature in May

Min Temperature 9°C (48°F)  

Max Temperature 21°C (70°F)  

Chance of Rain 43%  

Precipitation 93 mm (3.7 in)  

Rainy days 13 days  

Humidity 65% *  

Sunshine 266 hours *  

Percentage Sunshine 57% *  

* Data from: Madison, the United States of America (51 KM, 31 Miles).

What to Wear in Janesville in May

For Janesville in May, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. High rain levels are expected, so pack waterproof gear and an umbrella or poncho. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.

What To Do in Janesville in May

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Cycling

9/10

Walking

9/10

Barbeque

8/10

Camping

4/10

Outdoor sports

9/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United States of America, check out our Janesville's climate page.

More climate data for Janesville

Temperature Rainfall Sunshine Humidity

See the full Janesville climate overview or explore weather in the United States of America.