Cold Start, Warm Future: Chicago’s May Weather Mix

Chilly May Morning

Chicago woke up to a chilly shock, with some spots dipping below 30 °F. A frost warning covered almost every county except Cook. The National Weather Service said the day was unusually cold for May.

Temperature Outlook

• Highs: Low 60s, with a chance of showers.
• Storms: A few thunderstorms could pop up overnight and early Friday.

Day‑by‑Day Forecast

Seasonal Context

• This frost is likely the last of the season.
• Monday may stay chilly, but by week’s end, spring weather will arrive.
• Climate maps show temperatures above average for mid‑May.

Looking Ahead

• Expect 70s by Thursday or Friday.
• Heat will linger into the 80s for several days.
• The warming trend is pleasant, yet storms may join as May ends and June begins.

Historical Note

Chicago’s last freeze usually falls in late April. The most recent freeze occurred on May 25, 1992, according to the forecast office.