World
Large area temperature spread ahead Saturday afternoon; season’s coolest air will bring the chance for widespread frost Tuesday
Summer-level warmth returned Friday, including the warmest Oct. 11 in 51 years, thanks to steady southwest winds which overcame lake cooling and pumped in much warmer air across the entire metro area.
It also marked the 99th and 102nd days of 80-degrees or warmer temperatures at both major observation sites.
Mid afternoon Friday temperatures: How much warmer than at the same time Thursday?
Large area temperature spread ahead Saturday afternoon
From the low 60s northern suburbs to the lower 80s far south
Season’s coolest air will bring the chance for widespread frost, especially for areas away from Lake Michigan Tuesday morning and again Wednesday morning.
Forecast lows Tuesday morning
Forecast lows Wednesday morning
Cooler than normal conditions to persist overall on average through October 17 before another major pattern change to much warmer than normal temperatures.
Forecast temperature anomaly through October 17
Forecast temperature anomaly October 18 through 24
Forecast highs next five days: How far from normal?
