ROCKFORD (WREX) — Warmer air and much higher humidity has the Stateline feeling like the middle of summer rather than the early parts of September. Look for these conditions to continue, depending on where a stationary front ends up.
Northern Illinois is currently well within the warm sector of the latest weather system moving through the Midwest. A cold front will seep southward tonight into southern Wisconsin. The arrival of the front may spark a few scattered showers and storms Wednesday morning. Like we’ve seen the last few days, gusty winds and heavy rainfall are possible with these storms.
The cold front does not look to drop all the way past the Stateline Wednesday morning, so we should have another warm and muggy day. Highs are expected to be in the middle 80’s again. The heat index should reach the low 90’s by the afternoon. If the front is able to seep southward enough, we could see a cooler day, but that it unlikely for now.
This cold front will move back north again by Thursday morning, which could spark more showers and storms. With any cold air moving away from us again, we should see a third day in a row in the 80’s on Thursday. The muggy air will make conditions feel like the 90’s again.
Once the morning storms are gone, Thursday should stay dry until the evening and night. One final cold front moves through then, producing more showers and storms with possible heavy rainfall. After the cold front passes, temperatures will be much cooler for Friday and the weekend. We’ll see highs in the middle 70’s, with much lower humidity.
The summer heat will come back quickly. We could see the 80’s again as early as Sunday. The lower to middle 80’s will return for early next week.