Saturday, September 25, 2010

Chilly Temperatures Through Sunday Night

A disturbance passing well to our southwest is generating some sprinkles and light rain showers this evening. The best chance of rain is over the southwestern part of the Stateline. Precipitation has been having a hard time making it into north central Illinois because of very dry air moving to the southeast from Wisconsin. The disturbance will pass off to the south tonight bringing an end to the light rain and sprinkles before midnight. It will be partly cloudy and cool later tonight with a low in the low 40's. High pressure from Canada ridging from Quebec southwest through Lake Superior, Minnesota, and Nebraska into Colorado. This ridge will take control of Stateline weather later tonight and Sunday clearing skies keeping temperatures on the cool side with high on Sunday only in the low 60's. The ridge will be lying right over north central Illinois on Sunday night. With clear skies and light winds temperatures will drop to the low 40's. Some of the rural areas will get down into the upper 30's, and patchy frost cannot be ruled out in those low lying areas subject to cold air drainage.  Monday will be a sunny day, and afternoon tempatures will recover into the upper 60's. Tuesday will be partly cloudy, and there is a chance of some isolated high based rain showers or sprinkles in the afternoon as a trof rotates around low pressure off to our east. Wednesday looks like it will be mostly sunny and delightful as the high pressure regains control, and pushes temperatures into the low 70's in the afternoon. A dry front will pass through the area on Thursday, and temperatures will reach the middle 70's.
By Meteorologist
Eric Nefstead

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