Chicago weather: Hot, steamy conditions for your Sunday

Chicago Weather: Most rain chances out with hot, steamy temps in

Fox 32 Meteorologist Mike Caplan has the forecast for July, 27, 2025.

CHICAGO - While the Chicago area got through Saturday with no warnings for severe thunderstorms or flooding, there is going to be muggy heat for the next few days.

Fox 32 Meteorologist Mike Caplan has the forecast.

What to Expect:

Once again, there were some isolated heavy-rain producers, this time targeting Northwest Indiana where some minor flooding occurred. 

Today, as I drove in, there was a light show in the southern sky. 

Thunderstorms with heavy rain are moving through Will County, headed towards Northwest Indiana again, where downpours will be the primary threat along with lightning. Those should fade away shortly after sunrise leaving behind a partly to mostly sunny sky with temperatures rising into the low 90s. 

There is a small chance of a spotty t’shower this afternoon. 

This will be the first of a three-day heat wave reaching its peak tomorrow.

Temperatures were well into the 80s as of 10 a.m.  

This should be day 21 of 90 degrees or warmer in Chicago this year with two more in the hopper before a mid-week cool down.  

Skies are sunnier the farther north one is, but all should have at least partly sunny conditions and oodles of humidity. It’s still possible a few spots will pick up a shower or storm today, and possibly something toward dawn Monday.

What's next:

Highs on Monday will be in the mid to upper 90s and may very well end up being the hottest day of the year so far. 

On Tuesday, highs will be in the low to possibly mid 90s. While a thunderstorm cannot be ruled out during this period it will more likely stay dry. One period to watch will be toward dawn Monday when a decaying line of storms will approach.  

Rain chances go up Tuesday night and Wednesday when a cold front will move into the area. That should spark at least scattered thunderstorms and end the heat. 

Humidity values will also be knocked back, providing some real relief from the mugginess we’ve experienced in the past week plus. 

Highs Wednesday through Friday will likely be not far from 80 degrees.

During extreme heat conditions, residents are encouraged to check on relatives, neighbors and vulnerable populations.

If they are unable to make contact, they can request a well-being check by downloading the CHI311 app, visiting 311.chicago.gov or calling 311.

Always call 911 if someone is experiencing a medical emergency.