Temperature in Illinois in April

Daytime highs, nighttime lows and the warmest cities in Illinois, the United States of America this April.

Illinois, the United States of America, a region in the United States of America, experiences maximum daytime temperatures in April ranging from 12°C (54°F) in Zion to 21°C (70°F) in Metropolis. Nighttime temperatures generally drop to 9°C (48°F) in Metropolis and 3°C (37°F) in Zion.

What is the temperature of the different cities in Illinois, the United States of America in April?

To get a sense of April's typical temperatures in the key spots of Illinois, explore the map below. Click on a point for an in-depth look.

Select a Month

Check the conditions for any month of the year.

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For a detailed overview over the year and the best time to visit Illinois, check out our Illinois's climate page.

See also: Illinois weather by month.

Best Places to Visit in Illinois in April

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

Conditions Temperatures Precipitation
Avg daytime high -5°C (23°F) cold → 32°C (90°F) hot

Marker color shows the average daytime high temperature in April: blue is cold, red is hot.

See all April weather averages, cities and regions in Illinois

Illinois temperatures in April: frequently asked questions

How hot does it get in Illinois, the United States of America in April?

Average daytime highs in Illinois, the United States of America during April reach about 15°C (59°F) in Chicago.

How cold does it get at night in Illinois, the United States of America in April?

Chicago sees nighttime lows close to 4°C (39°F) in April.

What is the warmest city in April in Illinois, the United States of America?

Based on our systematic data collection, Metropolis has been identified as the city with the highest average temperatures. The daytime temperature usually hovers around 21°C (70°F), while at night it goes down to an approximate temperature of 9°C (48°F).

What is the coldest city in April in Illinois, the United States of America?

When looking through our records, we find that Zion stands out as the coolest city in Illinois, the United States of America for the month of April. Daytime highs average 12°C (54°F) and it cools down to about 3°C (37°F) at night.

How much sun does Illinois, the United States of America get in April?

The weather is predominantly sunny, with an estimated total of around 217 hours of sunshine in Chicago. This means many sunny days, which creates a cheerful atmosphere during this month.

Interested in more climate information?

We have much more information about the climate in Illinois.

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.

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