Chicago Braces for Severe Thunderstorms and Chilly Weekend

Warm Friday to give way to evening storms and plunging temperatures on Saturday

Apr. 17, 2026 at 3:25pm

Got story updates? Submit your updates here. ›

A sweeping, atmospheric landscape painting in muted tones of grey, blue, and gold, depicting a vast, stormy sky looming over a flat, flooded plain, with any physical structures or objects dwarfed by the overwhelming natural forces.As severe storms approach, the immense power of nature overwhelms the Chicagoland landscape, underscoring the region's vulnerability to extreme weather events.Chicago Today

The Chicagoland area is set to experience a warm Friday followed by potentially severe thunderstorms in the evening, leading to a chilly Saturday with highs only in the low 50s. The storms could bring 1-2 inches of rain and raise concerns about flooding in local rivers already swollen from a wet spring.

Why it matters

Chicago's volatile spring weather patterns have become increasingly common, with extreme temperature swings and severe storms testing the city's infrastructure and emergency preparedness. The upcoming weather shift highlights the need for residents to stay vigilant and have plans in place to respond to potential flooding and storm damage.

The details

Temperatures on Friday are expected to reach the low 80s, well above the typical mid-April highs around 60 degrees. However, the warm conditions will give way to thunderstorms beginning around 8 p.m., which could bring damaging winds, spin-up tornadoes, and heavy rainfall of 1-2 inches. The storms may exacerbate flooding concerns in areas near rivers that have already seen high water levels due to Chicago's second-wettest spring on record.

  • Temperatures will reach the low 80s on Friday, April 17, 2026.
  • Thunderstorms are expected to begin around 8 p.m. on Friday, April 17, 2026.
  • Saturday, April 18, 2026, will see highs only in the low 50s due to the overnight storms.

The players

Kevin Donofrio

A science and operations officer for the National Weather Service who provided forecasts and warnings about the upcoming weather conditions.

Got photos? Submit your photos here. ›

What they’re saying

“We've been in this kind of hot, humid and stormy pattern here.”

— Kevin Donofrio, Science and Operations Officer, National Weather Service

“Have a plan in place if a warning is issued for your area.”

— Kevin Donofrio, Science and Operations Officer, National Weather Service

What’s next

The National Weather Service will continue to monitor the situation and issue any necessary severe weather warnings or flood advisories for the Chicagoland area.

The takeaway

Chicago's volatile spring weather patterns, with extreme temperature swings and severe storms, underscore the need for residents to stay informed, prepared, and responsive to rapidly changing conditions to protect their safety and property.