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Areas from Chicago westward, most of far southern Illinois,
and McLean County received 5 to 9 inches of precipitation. A few
locations received more than 9 inches, including Countryside
(Cook County) with 10.56 inches, West Aurora with 9.32 inches,
and Aurora with 9.27 inches.
The average temperature in Illinois for May was 62.2 degrees,
just 0.5 degrees below normal. This breaks an eight-month streak
of above-normal temperatures in Illinois. Underneath the benign
numbers were some stretches of cold weather at the beginning and
middle of the month before summer-like conditions arrived in the
last 10 days of the month. In the end, the warm and cold weather
canceled each other out.
The National Oceanic and Atmospheric Administration’s Storm
Prediction Center reported five tornadoes in Illinois in May, as
well as 35 hail and 86 wind damage reports.
[Lisa Sheppard]
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