High pressure over the northern Great Lakes Wednesday has pushed enough
dry air into southern Wisconsin and northern Illinois to help erode away
the thick cloud cover from the last two days. While we didn't reach 70
degrees, temperatures were an improvement from Tuesday and will
continue to warm heading into the weekend.
A slight increase in moisture, however, on Thursday could mean a little
more cloud cover during the afternoon. Temperatures will rise back into
the upper 60s, to near 70 degrees. Rain and thunderstorms chances
return heading into Memorial Day weekend as moisture is pulled north
from the Gulf of Mexico. The increase in moisture may also make it feel
a little more muggy, especially Sunday and Monday.
A cold front moving in from the west will allow thunderstorms to develop
over the Plains Sunday afternoon and evening. Depending on how quickly
the front moves east, we could stand a chance for some thunderstorms
during the evening hours. As the cold front comes through Monday it'll
become 'hung up' across the Stateline through Tuesday, and possibly
Wednesday. As moisture rides up along the front heavy pockets of rain
will be possible. As it looks right now, the heaviest rain may come
down west of the Mississippi River through Monday, but that will need to
be watched with the timing of the cold front.
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