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

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. Highs should climb into the low 60s, but showers may appear. A storm expert noted that not everyone will see rain. Overnight and early Friday, a few thunderstorms could pop up. Friday brings milder heat with mid‑60s highs. The lake side will stay cooler. Saturday sees a warm burst, hitting 75°F before cooling back to the low 60s on Sunday.This frost is likely the last of the season. A weather forecaster warned that Monday could stay chilly, but by week’s end, spring weather will arrive. Climate maps show temperatures above average for mid‑May. Expect 70s by Thursday or Friday, and the heat will linger into the 80s for several days. The warming trend is pleasant, yet storms may join as May ends and June begins. Chicago’s last freeze usually falls in late April. The most recent freeze occurred on May 25, 1992, according to the forecast office.