National Weather Service Forecast for: Fond du Lac WI
Issued by: National Weather Service Milwaukee, WI
Updated: 2:41 pm CDT Jul 16, 2026
 
Tonight

Tonight: Isolated showers and thunderstorms after 4am. Widespread smoke, mainly after 4am. Mostly cloudy, with a low around 66. Southeast wind around 5 mph. Chance of precipitation is 20%.
Patchy Smoke
then Isolated
T-storms
 Friday

Friday: Scattered showers and thunderstorms, mainly after 5pm. Widespread smoke, mainly before 10am. Partly sunny and hot, with a high near 91. Heat index values as high as 95. South wind 5 to 10 mph. Chance of precipitation is 30%.
Smoke then
Scattered
T-storms
 Friday
Night
Friday Night: Scattered showers and thunderstorms before 7pm. Mostly clear, with a low around 72. Southwest wind 5 to 10 mph. Chance of precipitation is 30%.
Scattered
T-storms then
Mostly Clear
 Saturday

Saturday: Isolated showers and thunderstorms before 7am, then isolated showers between 7am and 1pm. Sunny, with a high near 86. West wind around 10 mph becoming north in the afternoon. Chance of precipitation is 20%.
Isolated
T-storms then
Isolated
Showers
 Saturday
Night
Saturday Night: Mostly clear, with a low around 61. North wind 5 to 10 mph becoming light east after midnight.
Mostly Clear

 Sunday

Sunday: Sunny, with a high near 85. Calm wind becoming south around 5 mph in the afternoon.
Sunny

 Sunday
Night
Sunday Night: Partly cloudy, with a low around 64. South wind 5 to 10 mph.
Partly Cloudy

 Monday

Monday: A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 87. Southwest wind 10 to 15 mph.
Chance
Showers then
Chance
T-storms
 Monday
Night
Monday Night: A chance of showers and thunderstorms before 1am, then a slight chance of showers. Partly cloudy, with a low around 66. Chance of precipitation is 40%.
Chance
Showers
Lo 66 °F Hi 91 °F Lo 72 °F Hi 86 °F Lo 61 °F Hi 85 °F Lo 64 °F Hi 87 °F Lo 66 °F

Hazardous Weather Outlook
Air Quality Alert
 

Tonight
 
 Isolated showers and thunderstorms after 4am. Widespread smoke, mainly after 4am. Mostly cloudy, with a low around 66. Southeast wind around 5 mph. Chance of precipitation is 20%.
Friday
 
 Scattered showers and thunderstorms, mainly after 5pm. Widespread smoke, mainly before 10am. Partly sunny and hot, with a high near 91. Heat index values as high as 95. South wind 5 to 10 mph. Chance of precipitation is 30%.
Friday Night
 
 Scattered showers and thunderstorms before 7pm. Mostly clear, with a low around 72. Southwest wind 5 to 10 mph. Chance of precipitation is 30%.
Saturday
 
 Isolated showers and thunderstorms before 7am, then isolated showers between 7am and 1pm. Sunny, with a high near 86. West wind around 10 mph becoming north in the afternoon. Chance of precipitation is 20%.
Saturday Night
 
 Mostly clear, with a low around 61. North wind 5 to 10 mph becoming light east after midnight.
Sunday
 
 Sunny, with a high near 85. Calm wind becoming south around 5 mph in the afternoon.
Sunday Night
 
 Partly cloudy, with a low around 64. South wind 5 to 10 mph.
Monday
 
 A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 87. Southwest wind 10 to 15 mph.
Monday Night
 
 A chance of showers and thunderstorms before 1am, then a slight chance of showers. Partly cloudy, with a low around 66. Chance of precipitation is 40%.
Tuesday
 
 A 20 percent chance of showers after 1pm. Sunny, with a high near 81.
Tuesday Night
 
 Mostly clear, with a low around 57.
Wednesday
 
 Sunny, with a high near 79.
Wednesday Night
 
 Mostly clear, with a low around 57.
Thursday
 
 Sunny, with a high near 81.

 

Forecast from NOAA-NWS for Fond du Lac WI.