Tonight...Clear. Lows from 5 above in the northwest suburbs...To near 15 in downtown chicago. Northwest winds 10 to 15 mph diminishing to light westerly.

Wednesday...Mostly sunny. Highs around 25. Light and variable winds.

Wednesday Night...Fair. Lows around 15. Light and variable winds becoming southeast at 5 to 10 mph.

Thursday...Partly sunny. Highs in the mid 30s. Southeast winds around 10 mph.

Thursday Night...Becoming mostly cloudy. Lows in the mid 20s. Southeast winds around 10 mph.

Friday...Cloudy. Highs in the upper 20s.

Friday Night...Mostly cloudy with a 30 percent chance of snow showers. Lows in the lower 20s.

Saturday...Mostly cloudy. A 30 percent chance of snow showers. Highs in the upper 20s.

Saturday Night...Partly cloudy. Lows in the mid teens. Highs in the mid 20s.

Sunday...Partly cloudy. Lows in the mid teens. Highs in the mid 20s.

Monday...Mostly cloudy with a 30 percent chance of light snow. Highs in the mid 20s. Lows 10 to 15.

Tuesday...Mostly cloudy with a 30 percent chance of light snow. Highs in the mid 20s. Lows 10 to 15.