Chicago weather almanac: Wednesday, March 12, 2025

It’s been a mild open to the month of March with temperatures averaging more than four degrees above normal, good enough to rank 14^th warmest opening 12 days at Midway Airport since records began there in 1928.

Wednesday highs were noticeably milder inland where widespread 50s and even 60s were common.

A easterly breeze off the chilly waters of Lake Michigan restricted temperatures closer to lake by as much as 23 degrees compared to the warmest south/southwest suburbs.

Sunshine has been plentiful as we logged 100% of the day’s possible sun Wednesday adding to the monthly surplus.

Temperatures across the Plains were even warmer where daytime highs were some 20-25 degrees above normal, including a near 80-degree high in St. Louis.