Jefferson County, WI Weather Forecast and Current Conditions

Current Conditions From Nearby Station

Cloudy 3°F
Feels Like 3°F  
Humidity 90% Dew Point 0°F Wind Calm Barometer 30.64 in.
Report from a personal weather station 7 mi. NW of central Jefferson County
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Point Forecast at a Glance

SunDec 7
Sun Dec 7: Mostly Cloudy, Low -3F
 
-3
MonDec 8
Mon Dec 8: Mostly Cloudy, High 23F, Low 25F
23
25
TueDec 9
Tue Dec 9: Rain And Snow, High 35F, Low 29F
40%
35
29
WedDec 10
Wed Dec 10: Snow, High 25F, Low 3F
60%
25
3
ThuDec 11
Thu Dec 11: Snow, High 19F, Low 3F
20%
19
3
FriDec 12
Fri Dec 12: Snow, High 16F, Low -7F
40%
16
-7
SatDec 13
Sat Dec 13: Mostly Sunny, High 5F, Low -7F
5
-7

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7-Day Temperature Trend

Week Ahead Summary

High temperatures start near 23°F, reaching 35°F before cooling to 5°F, then recovering to 5°F by week's end. Unsettled weather expected with snow likely on at least 6 days.

Climate Context

This week's forecast shows temperatures running 15°F below the historical average for December. Normal highs for this period are around 33°F with lows around 17°F.

This Date in Weather History

1935 - From the Monthly Weather Review for December 1935, "The outstanding flood of December 1935 was the record-breaking overflow of Buffalo and White Oak Bayous at Houston, Texas on the 8 and 9th. This destructive flood was caused by excessive rainfall over Harris County, Texas during a 42 hour period on the 6th, 7th, 8th, with amounts ranging from 5.50 inches at Houston" to 16.49 inches at the Humble Oil Company in the northwestern part of Harris County.

More on this and other weather history

Jefferson County, WI 7 Day Weather Forecast Details

Sunday Dec 7

Mostly Cloudy

Night: Mostly cloudy, with a low around -3. Calm wind.

Monday Dec 8

Mostly Cloudy

Day: Mostly cloudy, with a high near 23. Light and variable wind becoming south 5 to 10 mph in the morning.

Snow

Night: Snow likely, mainly before 1am. Cloudy, with a temperature rising to around 25 by 5am. South wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

Tuesday Dec 9

Rain And Snow

Day: A chance of rain and snow after 3pm. Cloudy, with a high near 35. Southwest wind around 10 mph. Chance of precipitation is 40%.

Rain And Snow

Night: Rain and snow. Low around 29. South wind 10 to 15 mph becoming northwest after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.

Wednesday Dec 10

Snow

Day: Snow likely, mainly before noon. Mostly cloudy, with a temperature falling to around 25 by 5pm. Northwest wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

Snow

Night: A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 3. Northwest wind 5 to 10 mph.

Thursday Dec 11

Snow

Day: A 20 percent chance of snow after noon. Partly sunny, with a high near 19. West wind around 5 mph.

Snow

Night: A 40 percent chance of snow. Mostly cloudy, with a low around 3.

Friday Dec 12

Snow

Day: A 40 percent chance of snow. Mostly cloudy, with a high near 16.

Snow

Night: A 20 percent chance of snow. Mostly cloudy, with a low around -7.

Saturday Dec 13

Mostly Sunny

Day: Mostly sunny and cold, with a high near 5.

Snow

Night: A 20 percent chance of snow. Mostly cloudy, with a low around -7.

Sunday Dec 14

Mostly Sunny

Day: Mostly sunny, with a high near 13.


About Jefferson County, WI

Jefferson County is a county in the U.S. state of Wisconsin. As of the 2020 census, the population was 84,900. Its county seat is Jefferson. Jefferson County comprises the Watertown-Fort Atkinson, WI Micropolitan Statistical Area, which is also included in the Milwaukee-Racine-Waukesha, WI Combined Statistical Area.

Content from Wikipedia, licensed under CC BY-SA 3.0.

How We Provide Better Local Weather

Current conditions: We use the nearest available station to your location - including professional MESONET/MADIS and local weather stations - often miles closer than regional airports.

Forecasts: National Weather Service point forecasts predict for your specific area, not broad regional zones, making them far more relevant to your location.