Decatur weather in May (Illinois, United States of America)

How is May weather typically in Decatur? Wondering about the weather this month? Our guide has all the details you need.

Temperatures

In May, Decatur typically experiences high temperatures and high rainfall. Throughout the day, temperatures can rise to about 24°C. At night, they generally drop to 12°C.

Precipitation

Decatur in May usually receives high rainfall, averaging around 118 mm for the month. You can typically expect 12 days days of rain this month, based on climate records.

Average sunshine

Enjoy a sunny month with about 281 hours of sunshine, providing a cheerful and lively atmosphere.

If you prefer dry days with pleasant temperatures, August and September typically offer the best circumstances. While January, February and December tend to showcase less optimal conditions.

For an in-depth look at the yearly conditions, visit our specialized Decatur climate page with graphs.

 

Decatur, monthly averages in May

Min Temperature 12°C  

Max Temperature 24°C  

Chance of Rain 41%  

Precipitation 118 mm  

Rainy days 12 days  

Humidity 65% *  

Sunshine 281 hours *  

Percentage Sunshine 63% *  

Data from: Springfield, the United States of America (59 KM, 36 Miles).

Where to go in the United States of America in May

Find out more about the weather in the United States of America and which places have the best travel conditions in this month.

Weather conditions Weather

Temperatures

Precipitation

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Legend perfect weather pleasant tolerable unpleasant poor

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

So, what should you wear in this month?

For visitors traveling to Decatur, we recommend wearing layers. So maybe a skirt, t-shirt, shorts for during the day and jeans and a warm jacket for some days and evenings. Bring a rain jacket in case it rains during your stay. Plan on layering your clothes.

What To Do

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

Swimming

9/10

Cycling

9/10

Walking

9/10

Camping

6/10

Outdoor sports

9/10

Interested in more climate information?

This site provides you with all the information you need about the climate in Decatur.

Our site offers climate and forecast data for every country in the world. Are you going to the United States of America? On this website you can find 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.