Temperatures Tuesday were once again stuck in the 30s under thick cloud
cover, drizzle/light rain and fog. The rain has moved out but the cloud
cover and fog will continue into Wednesday morning. Temperatures
Wednesday will warm into the mid 40s, but warm even further as a strong
low pressure system moves in from the southwest. Southerly winds ahead
of the low Wednesday night into Thursday will hold temperatures in the
low 40s through the morning, with highs Thursday reaching the low to mid
50s by early afternoon.
Unfortunately, the warm up will come with a chance for heavy rainfall
overnight Wednesday into Thursday. Strong winds in the lower levels of
the atmosphere will help transport a more 'tropical' air mass into
northern Illinois and southern Wisconsin. Rain will be steady, and at
times heavy, during the overnight. There could even be a few rumbles of
thunder as well. Scattered showers continue through Thursday morning
before coming to an end Thursday afternoon. A strong cold front will in
from the northwest Thursday evening bringing temperatures down into the
20s Thursday night.
Rainfall amounts will range from around half an inch, up to three
quarters of an inch across the Stateline. This will be the heaviest
rainfall since October 26th when a little over an inch of rain fell.
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