Hopefully everyone had a good start to the work week and suffered no ill effects from losing an hour of sleep over the weekend. At least that means spring is immenent, right? Silver linings! 

Let’s dig in to what you’re here for – weather stuff. 

We have a ridge building into the plains which will work to clear our skies this evening and looking at IR satellite, it looks like the vast majority of southern IL may already be clear. This and calm winds will allow radiational cooling to kick in tonight. Our overnight lows should fall into the upper 20s area-wide.

Tuesday should be similar to today. The surface ridge will continue working its way east so our skies will stay sunny and clear and temperatures will rise into the low 40s. As we head into Tuesday evening, temperatures should fall into the mid-20s with clear skies and light winds again. 

Wednesday will begin to moderate as we start to see some return flow that will help to bring temperatures up to around the 50 degree mark with all indications of being dry and sunny as well. Overnight on Wednesday temperatures should fall into the mid-upper 30s and remain clear. 

GFS forecast precipitation depiction Thurday night through Friday showing the possibility of rainfall across all of southern IL.

Thursday will see temperatures rise even further into the upper 50s-low 60s with mostly sunny skies. However, a front will slowly begin to work its way south before stalling out likely south of I-70. Precipitation should develop along the boundary Thursday night and allow several waves of showers to persist through Friday. Overnight lows Thursday night should fall to the upper 30s-low 40s. 

As noted above, waves of showers and isolated thunderstorms will persist through Friday evening. High temperatures on Friday should be from the low 50s near I-70 to the upper 50s farther south near Carbondale. Friday night should fall to the upper 30s to the mid-40s. 

It looks like the weekend has a chance for preciptation each day as well although Saturday looks like it could dry out during the day so it may not be a total washout. 

Still some uncertainty regarding the front late this week into the weekend so temperatures and precipitation specifics will need to be updated as we move forward.