Frost Advisory Again Overnight

A sprawling chilly Canadian high pressure is centered over Illinois tonight.  Skies are clear.  The wind is calm.  The dew points are in the low 30's.  The barometric pressure is high and continuing to rise.  So, all things considered, the Stateline will have strong radiational cooling overnight.  With that in mind, a FROST ADVISORY has been issued for the entire region overnight until 8 am on Monday morning.  The overnight low will be in the middle 30's with a few areas falling into the low 30's.  Because of the anticipated frost and near freezing temperatures it would be a good idea to cover and tender plants that you can't bring inside.  By the way the record low for Rockford tonight is 28 degrees set in 1976.  That record does not appear to be in jeopardy.  There will be a very cool start to the day on Monday with patches of frost.  The frost will melt by 8 am under bright sunshine.  The large chilly high will be over Kentucky by daybreak, and West Virginia by noon.  A southwesterly wind will pick up during the day as the gradient increases.  By noon the wind will be blowing at 15 to 25 mph it may increase to 20 to 30 mph mid afternoon.  A nice warm up will ensue under sunny skies pushing the afternoon temperature close to 70 degrees.  It will remain clear on Monday night, and with the southwesterly winds continuing at 10-15 mph, the temperature will hold in the upper 40's for lows.  On Tuesday the warm up will continue with the temperature reaching the upper 70's before the next cool front moves into the area during the afternoon.  Very little moisture is available for the front to work on, so the front is expected to pass through the Stateline without producing any precipitation.  A modest cool down will occur behind the front with highs in the upper 60's and lows in the 40's.  Little if any precipitation is expected during the next 7 days, although it does look like down state areas could receive some decent rainfall amounts.