Sabrina Ullman: Toasty Tuesday before a cold front arrives.

Tonight will be partly cloudy with a southeast wind becoming calm. Overnight lows will be close to sixty throughout the area. A few showers are possible this evening, for areas stretching from the international border to central St. Louis County.

Tomorrow will be similar today with warm, mostly sunny weather. Afternoon highs will be in the low eighties. An easterly wind will keep the North Shore a little cooler, especially for Cook County. A few passing showers and thunderstorms will move through in the afternoon and evening, becoming widespread on Wednesday.

Wednesday will be rainy and cool, with areas north of the Twin Ports staying below 70 degrees. Thursday will also be on the cooler side before temperatures warm going into the weekend. We will have a small dry stretch Thursday and Friday before rain chances return.

Tonight

Partly cloudy, with a low around 60. Southeast wind around 5 mph becoming calm.

Tuesday

A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 80. East wind around 5 mph becoming west in the afternoon.

Wednesday

A chance of showers and thunderstorms before 10am, then a chance of showers between 10am and 1pm, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 70. East wind 5 to 10 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Thursday

Mostly sunny, with a high near 70. East wind 5 to 10 mph, with gusts as high as 15 mph.

Friday

Sunny, with a high near 74. East wind around 5 mph becoming south in the afternoon.

Saturday

A chance of showers. Partly sunny, with a high near 75. Breezy, with a south wind 5 to 15 mph, with gusts as high as 20 mph.

Sunday

Showers likely. Partly sunny, with a high near 77. Southwest wind around 10 mph, with gusts as high as 20 mph.