Widespread frost tonight, warming up a bit this weekend

 It was another chilly day in the Stateline with pockets of isolated showers from time to time. Afternoon highs only reached the low to mid-50s for most, about 10-15 degrees cooler than average! As clouds thin out this evening, temperatures will quickly drop into the low 30s for most. Widespread frost is likely under a mostly clear sky and light wind.

Frost/freeze alerts will go into effect tonight and run through Saturday morning. That includes a Freeze Warning for Southern Wisconsin from 12-8AM and Frost Advisory for Northern Illinois from 1-8AM. Protect any sensitive plants that may already be in the ground!

Saturday morning will start with sunshine, but clouds return for the afternoon. While we remain dry, clouds will prevent temperatures from rising much higher than the mid-50s. Sunday brings another jump in temperatures with highs in the 60s but also comes with scattered showers.

May begins with a chill, frost concerns linger

It's Gonna Be MAY:

May brings a big boost in daylight for the Stateline, pushing sunsets after 8PM. By the end of the month, northern Illinois will gain about 50 to 60 minutes of daylight, pushing sunset times closer to 8:30PM. But while evenings grow brighter and brighter, the month kicks off with a lingering chill, reminding us summer isn't here just yet.   

Chilly Friday:

Temperatures will trend even cooler than Wednesday and Thursday with highs reaching the low 50s. A light northwest wind will keep that cool feel in place, and we can't completely rule out a brief sprinkle or shower. An upper-level low lingering over the Great Lakes will send another weak disturbance into the region, keeping clouds around at times but also assisting in today's isolated chance.  

Frost and Freeze Alerts:

Tonight, frost is the main concern. High pressure moving in will help clear skies, allowing temperatures to fall into the low 30s. Green, Rock, and Walworth County have been placed under a FREEZE WARNING whereas northern Illinois has been placed under a FROST ADVISORY. With conditions favorable for frost, be sure to cover or bring in any sensitive or newly planted vegetation.

Weekend Forecast:

As for the weekend, northern Illinois will see a quiet but cool start. Saturday features high pressure, leaving skies partly cloudy with afternoon highs staying in the 50s. Clouds will increase late Saturday into Saturday night as our next storm system approaches. With it will be a scattered rain chance than extends into the first half of Sunday. Temperatures will respond to the newly-introduced southwesterly wind, warming into the mid 60s to wrap up the weekend.