National Weather Service Forecast for: Wausau WI
Issued by: National Weather Service Green Bay, WI
Updated: 1:06 am CDT Jun 30, 2026
 
Overnight

Overnight: A 40 percent chance of showers and thunderstorms, mainly between 3am and 5am. Mostly cloudy, with a low around 75. South southwest wind around 8 mph, with gusts as high as 18 mph.
Chance
Showers
 Tuesday

Tuesday: A 30 percent chance of showers and thunderstorms, mainly between 4pm and 5pm. Mostly cloudy, then gradually becoming sunny and hot, with a high near 92. Heat index values as high as 102. South southwest wind 9 to 13 mph, with gusts as high as 22 mph.
Partly Sunny
then Chance
T-storms
 Tuesday
Night
Tuesday Night: A 20 percent chance of showers and thunderstorms, mainly between 1am and 3am. Mostly cloudy, with a low around 70. West southwest wind 5 to 10 mph becoming light west after midnight. Winds could gust as high as 20 mph.
Slight Chance
T-storms
 Wednesday

Wednesday: A chance of showers and thunderstorms between 9am and 10am, then showers likely and possibly a thunderstorm after 10am. Partly sunny, with a high near 89. Heat index values as high as 93. Light south wind becoming south southwest 8 to 13 mph in the morning. Winds could gust as high as 22 mph. Chance of precipitation is 70%.
Showers
Likely
 Wednesday
Night
Wednesday Night: Showers and possibly a thunderstorm. Low around 68. Southwest wind 8 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 90%.
Showers

 Thursday

Thursday: A 40 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 89.
Partly Sunny
then Chance
T-storms
 Thursday
Night
Thursday Night: Showers likely and possibly a thunderstorm. Partly cloudy, with a low around 67. Chance of precipitation is 70%.
Showers
Likely
 Friday

Friday: Showers likely and possibly a thunderstorm. Partly sunny, with a high near 85. Chance of precipitation is 70%.
Showers
Likely
 Friday
Night
Friday Night: A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 65.
Chance
T-storms
Lo 75 °F Hi 92 °F Lo 70 °F Hi 89 °F Lo 68 °F Hi 89 °F Lo 67 °F Hi 85 °F Lo 65 °F

Hazardous Weather Outlook
Extreme Heat Warning
 

Overnight
 
 A 40 percent chance of showers and thunderstorms, mainly between 3am and 5am. Mostly cloudy, with a low around 75. South southwest wind around 8 mph, with gusts as high as 18 mph.
Tuesday
 
 A 30 percent chance of showers and thunderstorms, mainly between 4pm and 5pm. Mostly cloudy, then gradually becoming sunny and hot, with a high near 92. Heat index values as high as 102. South southwest wind 9 to 13 mph, with gusts as high as 22 mph.
Tuesday Night
 
 A 20 percent chance of showers and thunderstorms, mainly between 1am and 3am. Mostly cloudy, with a low around 70. West southwest wind 5 to 10 mph becoming light west after midnight. Winds could gust as high as 20 mph.
Wednesday
 
 A chance of showers and thunderstorms between 9am and 10am, then showers likely and possibly a thunderstorm after 10am. Partly sunny, with a high near 89. Heat index values as high as 93. Light south wind becoming south southwest 8 to 13 mph in the morning. Winds could gust as high as 22 mph. Chance of precipitation is 70%.
Wednesday Night
 
 Showers and possibly a thunderstorm. Low around 68. Southwest wind 8 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 90%.
Thursday
 
 A 40 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 89.
Thursday Night
 
 Showers likely and possibly a thunderstorm. Partly cloudy, with a low around 67. Chance of precipitation is 70%.
Friday
 
 Showers likely and possibly a thunderstorm. Partly sunny, with a high near 85. Chance of precipitation is 70%.
Friday Night
 
 A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 65.
Independence Day
 
 A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 84.
Saturday Night
 
 Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 64. Chance of precipitation is 60%.
Sunday
 
 A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 81.
Sunday Night
 
 A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 61.
Monday
 
 A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 81.

 

Forecast from NOAA-NWS for Wausau WI.