Chicago-area residents are heading into a warm stretch with periodic chances for showers and thunderstorms through early next week, even as Friday evening stayed mild under clear skies. Temperatures were in the upper 60s and southerly winds were blowing around 14 mph, a calm setup before a line of storms over Iowa begins pushing toward northern Illinois late overnight into early Saturday morning.
The first round of rain is expected to arrive as the clock moves toward daybreak Saturday, and the strongest storms could bring gusty winds and hail, especially west of Chicago and around sunrise Saturday. Most areas should get at least some rainfall before conditions dry out later Saturday morning. That means the weekend should feel unsettled, but not lost to rain: much of Saturday and Sunday is expected to stay partly sunny and largely dry during the day, with scattered showers and thunderstorms more likely in the evening and overnight hours.
The bigger story is the heat building behind the brief rounds of rain. High temperatures are forecast to climb into the low- to mid-80s through Tuesday, with some places possibly reaching the upper 80s over the weekend. Another round of potentially strong thunderstorms is possible Monday, and lingering showers could hang around Tuesday before a cold front turns the pattern cooler by midweek.
That shift should be noticeable by Wednesday through Friday, when temperatures are expected to return to more seasonal levels with highs in the upper 60s to low 70s. Drier conditions are also expected during the latter half of the week, bringing the Chicago weather pattern back to something closer to late-spring normal after several days of warmth, scattered storms and brief interruptions.
For people planning around the forecast, the key is simple: the weekend is not a washout, but it will not be completely quiet either. Rain and thunder will come in waves, mainly at night, while the daytime hours stay mostly usable. The warmth is real, but it is temporary, and by midweek the city should be back to cooler, drier air more in line with the season.
