Saturday, November 24, 2012

Not As Cold on Sunday

Saturday has been a cold day across the Stateline with afternoon high temperatures reaching only 34 degrees at the Rockford airport. The cold high pressure is shifting off to the east this evening. Warmer air from the Pacific is sliding across the northern plains into the mid west. Moisture is limited, but widespread cloud cover overnight will keep the temperatures from dropping much. In fact, the overnight low, in the middle 20's, will probably occur this evening along with the chance of a few flurries. Then, temperatures will hold steady, or may even rise a couple of degrees overnight. The next front will sweep across the area around daybreak on Sunday switching the wind to the west and then to the northwest. Despite the frontal passage, the temperature will warm into the low 40's under partly cloudy skies. Temperatures will drop into the middle 20's on Sunday night. Modified Canadian high pressure will make for colder conditions on Monday with a high around 34 degrees. Cold high pressure over western Iowa will make for a very chilly night on Monday night with the temperature dropping as low as the middle teens.  The high will pass across the area on Tuesday.  Skies will  be partly cloudy, and the high will be in the chilly middle 30's again.  High pressure will continue the dry spell for northern Illinois on Wednesday.  Skies will be mostly sunny, and the high will be in the upper 30's.  A little moderation will take place on Thursday with a stationary front temporarily setting up from northern Illinois westward across northern Iowa.  There will be enough moisture convergence that there may be a little light rain, or rain and snow mixed across the Stateline on Thursday night.  It will be mostly cloudy with a high in the low 40's on Thursday and Friday.  On Saturday a southerly wind will develop warming temperatures close to 50 degrees in the afternoon.  A weak disturbance could cause some light rain showers in the afternoon.


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