Statistics were provided by Jim Angel, state climatologist, of the
Illinois State Water Survey.
The statewide rainfall for spring in
Illinois was 12.0 inches, just 0.7 inches above normal. This was
much less than the 15.8 inches that fell in the spring of 2009 and
the 14.2 inches that fell in the spring of 2008.
Based on preliminary data in Illinois, the statewide average
temperature for May was 64.1 degrees, 1.3 degrees above normal. The
statewide average precipitation for May was 5.7 inches, 1.4 inches
above normal. The heaviest rain amounts for the month were in
western Illinois between Quincy and the Quad Cities. Dallas City,
along the Mississippi River, reported 9.07 inches for the month.
The latest National Weather Service outlook for the summer months
of June to August calls for an increased chance of below-normal
temperatures across Illinois. Illinois has an equal chance of
above-, below- and near-normal precipitation.
"So far this month has been both warmer and wetter than normal as
of June 10. Temperatures are 3 degrees above normal and the
statewide average rainfall is 2.3 inches," Angel said.
The Illinois State Water Survey, located at the University of
Illinois at Urbana-Champaign, is a division of the Institute of
Natural Resource Sustainability and is the primary agency in
Illinois concerned with water and atmospheric resources.
[Text from file received from
State Water Survey]