August Rainfall and Precipitation in Illinois
Average rainfall, rainy days and the driest cities in Illinois, the United States of America in August.
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Best Places to Visit in Illinois in August
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Monthly precipitation
0 mm (0 in) dry → 150 mm (5.9 in) wet
Marker color shows total monthly precipitation in August: pale blue is dry, deep blue is wet.
Illinois precipitation in August: frequently asked questions
How much rainfall does Illinois, the United States of America receive in August?
In August, Chicago typically receives significant rainfall, averaging around 115 mm (4.5 in). Expect a mix of wet and dry days with occasional showers.
How many days does it rain in Illinois, the United States of America in August?
On average, Chicago has about 11 days days of rain in August.
Is August part of the rainy season in Illinois, the United States of America?
August is generally a drier month for Illinois, the United States of America, falling outside the main rainy season.
What is the wettest city in August in Illinois, the United States of America?
Looking at our data, Monee tops the wettest-cities list in Illinois, the United States of America for August, with monthly rainfall averaging 138 mm (5.4 in).
What is the driest city in August in Illinois, the United States of America?
Tuscola is the driest city we have data for in Illinois, the United States of America in August, with monthly rainfall close to 63 mm (2.5 in).
Interested in more climate information?
We have much more information about the climate in Illinois.
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