Thunderstorms Between 5 and 7 p.m. Sunday Night: NWS

Warm and muggy conditions today, and thunderstorms are expected to develop this afternoon over northern Illinois, likely between 5 p.m. and 7 p.m., according to the National Weather Service inChicago.

Some of these thunderstorms could be severe with damaging winds and hail the primary threats. Mostly cloudy, with a high near 81 today. Breezy, with a south wind around 20 mph, with gusts as high as 30 mph. Chance of precipitation is 60 percent.

Tonight will be mostly cloudy, with a low around 65. Breezy, with a south southwest wind 10 to 20 mph, with gusts as high as 25 mph.

MONDAY

Mostly sunny, with a high near 80. West southwest wind 10 to 15 mph, with gusts as high as 25 mph. In the evening, mostly clear, with a low around 47. West northwest wind around 15 mph, with gusts as high as 25 mph.

TUESDAY

Mostly sunny, with a high near 56. West northwest wind 10 to 15 mph becoming north northeast in the afternoon. Winds could gust as high as 20 mph.