Expires:202512211000;;948799 FPUS53 KMKX 210336 ZFPMKX SOUTH-CENTRAL AND SOUTHEAST WISCONSIN ZONE FORECAST National Weather Service Milwaukee/Sullivan WI 935 PM CST Sat Dec 20 2025 WIZ069-211000- Rock- Including the cities of Janesville and Beloit 935 PM CST Sat Dec 20 2025 .TONIGHT...Clear. Lows around 10. Northwest winds 10 to 20 mph. .SUNDAY...Colder, sunny. Highs in the mid 20s. West winds 5 to 10 mph shifting to the southwest in the afternoon. .SUNDAY NIGHT...Partly cloudy through around midnight then becoming cloudy. Lows around 18. South winds 5 to 10 mph. .MONDAY...Not as cold. Cloudy. Highs in the upper 30s. South winds 10 to 15 mph. .MONDAY NIGHT...Not as cold. Mostly cloudy. Lows in the lower 30s. Southwest winds 5 to 10 mph. .TUESDAY...Partly sunny. Highs in the lower 40s. .TUESDAY NIGHT...Mostly cloudy. Lows in the mid 20s. .WEDNESDAY...Cloudy. A 40 percent chance of light rain in the afternoon. Highs in the lower 40s. .WEDNESDAY NIGHT...Cloudy. A 40 percent chance of light rain through around midnight. Not as cool. Lows in the upper 30s. .CHRISTMAS DAY...Cloudy. Highs around 50. .THURSDAY NIGHT...Mostly cloudy. Lows in the lower 30s. .FRIDAY...Mostly cloudy. Highs in the lower 40s. .FRIDAY NIGHT...Partly cloudy through around midnight then becoming mostly cloudy. Lows in the upper 20s. .SATURDAY...Partly sunny. A 20 percent chance of light rain in the afternoon. Highs in the upper 30s. $$