wet summer in Illinois
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[September 03, 2009]
CHAMPAIGN -- Based on
preliminary data for Illinois, this was the 11th-coolest and
eighth-wettest summer since statewide records began in 1895. The
average temperature for June-August was 71.4 degrees, 2.4 degrees
below normal. The total precipitation for June-August was 15.2
inches, 3.6 inches above normal, according to Jim Angel, state
climatologist, of the Illinois
State Water Survey.
The coolest summer on record was 1915 with an average of 69.3
degrees. In recent years, 1992 was ranked third with 70.2 degrees,
and 2004 was ranked fourth with 70.4 degrees. The wettest summer on
record was 1993 with 18.3 inches of rain.
The statewide average August temperature was 71.0 degrees, 2.6
degrees below normal and the 15th-coolest August on record. The
statewide August total precipitation was 5.0 inches, 1.4 inches
above normal and the 17th-wettest August on record.
The mild summer has lowered energy demand for cooling homes and
businesses this summer. Cooling degree days were down 26 percent
from normal during June-August. On the downside, the wet spring
delayed corn and soybean planting, and the cool summer slowed their
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"We were in a similar situation last year," says Angel. "The
slow-developing crops benefited from unseasonably warm temperatures
in late September and early October as well as a later-than-normal
frost to finish the season in good shape. For now, National Weather
Service forecasts suggest that September temperatures and
precipitation should be near normal."
The Illinois State Water Survey at the University of Illinois at
Urbana-Champaign, under the Institute of Natural Resource
Sustainability, is the primary agency in Illinois concerned with
water and atmospheric resources.
[Text from file received from
State Water Survey]