Weather Forecast for
Jefferson County, WI


Tonight: A 30 percent chance of showers and thunderstorms, mainly after 5am. Partly cloudy, with a low around 72. Southwest wind around 5 mph.

Monday: Showers likely and possibly a thunderstorm before 8am, then a slight chance of showers and thunderstorms between 8am and 11am. Some of the storms could produce heavy rainfall. Mostly cloudy, then gradually becoming sunny, with a high near 89. Heat index values as high as 99. East wind 10 to 15 mph becoming west in the afternoon. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Monday Night: A 10 percent chance of showers and thunderstorms before 7pm. Increasing clouds, with a low around 65. West wind around 10 mph becoming north in the evening.

Tuesday: Mostly sunny, with a high near 83. North wind around 10 mph.

Tuesday Night: Mostly clear, with a low around 59. Northeast wind around 5 mph becoming calm in the evening.

Wednesday: Sunny, with a high near 85. Calm wind becoming northeast around 5 mph.

Wednesday Night: Mostly clear, with a low around 62. Calm wind.

Thursday: Mostly sunny, with a high near 87. Calm wind becoming southwest around 5 mph in the afternoon.

Thursday Night: A 20 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 65.

Friday: A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 81. Chance of precipitation is 50%.

Friday Night: A 40 percent chance of showers. Mostly cloudy, with a low around 64.

Saturday: A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 84.

Saturday Night: Mostly clear, with a low around 61.

Sunday: Sunny, with a high near 84.

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