National Weather Service Forecast for: Fond du Lac WI
Issued by: National Weather Service Milwaukee, WI
Updated: 3:12 am CST Dec 20, 2025
 
Overnight

Overnight: A slight chance of freezing rain. Cloudy, with a steady temperature around 25. South wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.
Slight Chance
Freezing Rain

 Saturday

Saturday: A chance of snow and freezing rain before 11am, then a chance of snow between 11am and noon. Cloudy through mid morning, then gradual clearing, with a high near 33. South wind around 15 mph becoming west in the morning. Winds could gust as high as 30 mph. Chance of precipitation is 50%.
Chance Wintry
Mix then
Sunny
 Saturday
Night
Saturday Night: Mostly clear, with a low around 5. Wind chill values between -10 and zero. Northwest wind 10 to 15 mph, with gusts as high as 30 mph.
Mostly Clear

 Sunday

Sunday: Sunny, with a high near 21. Wind chill values between -10 and zero. Northwest wind 5 to 10 mph becoming southwest in the afternoon.
Sunny

 Sunday
Night
Sunday Night: A 30 percent chance of snow after midnight. Increasing clouds, with a temperature falling to near 13 by 9pm, then rising to around 25 during the remainder of the night. South wind 5 to 10 mph.
Partly Cloudy
then Chance
Snow
 Monday

Monday: A chance of snow before 3pm, then a slight chance of rain. Cloudy, with a high near 35. South wind around 10 mph. Chance of precipitation is 40%.
Chance Snow
then Slight
Chance
Rain/Snow
 Monday
Night
Monday Night: Cloudy, then gradually becoming partly cloudy, with a low around 28. South wind 5 to 10 mph becoming west after midnight.
Decreasing
Clouds

 Tuesday

Tuesday: Mostly sunny, with a high near 36. West wind 5 to 10 mph.
Mostly Sunny

 Tuesday
Night
Tuesday Night: Mostly cloudy, with a low around 22.
Mostly Cloudy
Lo 25 °F Hi 33 °F Lo 5 °F Hi 21 °F Lo 13 °F⇑ Hi 35 °F Lo 28 °F Hi 36 °F Lo 22 °F

Hazardous Weather Outlook
 

Overnight
 
 A slight chance of freezing rain. Cloudy, with a steady temperature around 25. South wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.
Saturday
 
 A chance of snow and freezing rain before 11am, then a chance of snow between 11am and noon. Cloudy through mid morning, then gradual clearing, with a high near 33. South wind around 15 mph becoming west in the morning. Winds could gust as high as 30 mph. Chance of precipitation is 50%.
Saturday Night
 
 Mostly clear, with a low around 5. Wind chill values between -10 and zero. Northwest wind 10 to 15 mph, with gusts as high as 30 mph.
Sunday
 
 Sunny, with a high near 21. Wind chill values between -10 and zero. Northwest wind 5 to 10 mph becoming southwest in the afternoon.
Sunday Night
 
 A 30 percent chance of snow after midnight. Increasing clouds, with a temperature falling to near 13 by 9pm, then rising to around 25 during the remainder of the night. South wind 5 to 10 mph.
Monday
 
 A chance of snow before 3pm, then a slight chance of rain. Cloudy, with a high near 35. South wind around 10 mph. Chance of precipitation is 40%.
Monday Night
 
 Cloudy, then gradually becoming partly cloudy, with a low around 28. South wind 5 to 10 mph becoming west after midnight.
Tuesday
 
 Mostly sunny, with a high near 36. West wind 5 to 10 mph.
Tuesday Night
 
 Mostly cloudy, with a low around 22.
Wednesday
 
 Cloudy, with a high near 41.
Wednesday Night
 
 Cloudy, with a low around 34.
Christmas Day
 
 Mostly cloudy, with a high near 46.
Thursday Night
 
 Mostly cloudy, with a low around 28.
Friday
 
 Mostly cloudy, with a high near 39.

 

Forecast from NOAA-NWS for Fond du Lac WI.