First Warn Weather Team

The Stateline had another wonderful very comfortable fall like day on Saturday with an afternoon high at the Rockford Airport of 77 degrees. It will not be as cool tonight with clouds increasing in advance of a southward dropping cool front over Wisconsin. The low will be around 56 degrees with light winds. On Sunday the front will graze the area, and there could be some light rain showers and possibly an isolated thunderstorm in the afternoon. The high on Sunday will be in the middle 70's again under variable clouds and some sunshine. A few showers may linger into Sunday evening.  It will remain mostly cloudy on Sunday night as the front slowly dissolves just to the east of the area.  The low will be around 54 degrees with light winds.  On Monday, even though high pressure will be approaching from the northwest, an upper disturbance, and quite cold air aloft in this northwesterly flow, will make conditions unstable enough to possibly generate a few instability showers during the afternoon hours.  Any rainfall that occurs will be on the light side.  Skies will be partly cloudy on Monday with another high temperature in the middle 70's.  On Monday night skies will clear, and temperatures will drop into the low 50's as the Canadian high pressure over Minnesota takes full control of Stateline weather.  On Tuesday it will be another fabulous August day with full sunshine, low humidity, and light winds.  High temperatures on Tuesday will be in the upper 70's to around 80 degrees.  The high will start to shift more to the east and southeast, and by Wednesday a light southerly wind will develop.  It will be sunny again, and the afternoon high will be around 83 degrees.  On Thursday there will still be enough influence from the high, even though the center will be over Pennsylvania, to provide mostly sunny skies.  Temperatures will heat up above average to around 85 degrees.  Southerly winds will begin to pump in more moist air by Friday. A weather system will be approaching from the plains, and there will be a slight chance of showers and thunderstorms by late in the day.  It will be very warm again with temps topping out in the middle 80's.  It will be more humid on Saturday, and with the plains system edging closer to the Stateline, chances of showers and thunderstorms will increase.