“Preliminary
data for Illinois
indicate 2005 was the 11th driest and 12th warmest year since
1895. Precipitation in 2005 averaged only 31.48 inches (7.75 inches below
normal), compared to 26.32 inches in 1901, the driest year on record. Statewide
temperatures in 2005 averaged 53.8°F (2.1 degrees above normal)
compared to 55.6°F
in 1921, the warmest year on record. Temperature extremes during 2005 year
ranged from 107°F at Monmouth on July 25 to -17°F at Mt. Carroll
on December 19,” says State Climatologist Jim Angel of the Illinois State Water
Survey (http://www.sws.uiuc.edu),
a division of the Illinois Department of Natural Resources.
“After a very cold
start to December, even temperatures much above normal the last 10 days of 2005
didn’t warm up the statistics. Statewide December temperatures were the 24th
coldest on record and averaged 26.7°F (3.1 degrees below normal). Precipitation
also averaged 1.23 inches (1.51 inches below normal), the 17th
driest December since 1895. Temperature extremes ranged from -17°F
at Mt. Carroll
on December 19 to 64°F at Carbondale
on December 28.
“The
National Weather Service forecast shows an increased chance of
warmer-than-average temperatures for January and for January–March.
Historically, this is not surprising because January and February are usually
mild after a cold December. Don’t expect too much relief of drought concerns in
January and February either, typically they are Illinois’ two driest months, with
precipitation averaging 2 inches each month compared to a monthly average of 4
inches during the growing season,” reminds Angel.