Jefferson County, WI Weather Forecast and Current Conditions

Current Conditions From Nearby Station

Cloudy 3°F
Feels Like 3°F  
Humidity 90% Dew Point 1°F Wind NNW 1 MPH Gusts 1 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

1963 - Lightning caused the crash of a jet airliner killing 81 persons at Elkton, MD.

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.

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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.

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