was warmer, wetter than usual
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"Despite the recent cold spell, statewide January temperatures of
29.5 degrees F were 4.7 degrees F above normal, and precipitation of
3 inches was 1.07 inches above normal, based on preliminary data,"
said Jim Angel, state climatologist with the
Illinois State Water Survey,
a division of the Illinois Department of Natural Resources.
"Temperatures were well above normal the first half of January (12.7
degrees above) and slightly below normal the second half (2.8
degrees below) -- the third consecutive month with above normal
temperatures. November-January temperatures were 4.2 degrees above
normal, the seventh-warmest such period on record since 1895," he
"January was the seventh consecutive month with normal to
above normal precipitation across much of Illinois, except
west-central Illinois. As a result, soil moisture in the top 6 feet
of the soil profile is fully recharged in most places -- good news
for farmers and gardeners," Angel added.
Statewide, January heating degree days, a measure of home heating
demand, were 12 percent below normal: 1,099 heating degree days
statewide, compared with the normal 1,247. For the 2006-2007 heating
season, beginning July 1 and through Jan. 31, statewide heating
degree days were 8 percent below normal and averaged 3,195, compared
with the normal 3,458.
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Extremes for January were quite dramatic. Temperatures ranged
from 62 degrees at Grayville on Jan. 1 to minus 8 degrees at Mount
Carroll on Jan. 17. Lebanon reported 2.60 inches, the largest
one-day precipitation, on Jan. 13, and Brookport Dam reported 6.61
inches, the largest monthly total.
January snowfall totals were 6-10 inches north of Interstate 80,
3-6 inches between I-80 and I-70, and 0-3 inches south of I-70.
Freeport reported the largest monthly snowfall total, 9.8 inches.
The National Weather Service outlook for February-March calls for
an increased chance of temperatures above normal across Illinois and
precipitation below normal.
"In a typical Illinois winter, we can expect cold temperatures
and snow in February and even early March. Expect periods of winter
weather over the next six weeks, regardless of what that groundhog
says," concludes Angel.
from file received from the Illinois
State Water Survey)