National Weather Service Forecast for: Green Bay WI
Issued by: National Weather Service Green Bay, WI
Updated: 10:51 pm CDT Jun 29, 2026
 
Tonight

Tonight: Partly cloudy, with a low around 78. East wind 6 to 8 mph becoming south southwest after midnight. Winds could gust as high as 18 mph.
Partly Cloudy

 Tuesday

Tuesday: A 10 percent chance of showers before 7am. Mostly sunny and hot, with a high near 95. Heat index values as high as 107. South southwest wind 9 to 13 mph, with gusts as high as 23 mph.
Slight Chance
Showers then
Mostly Sunny
 Tuesday
Night
Tuesday Night: A 30 percent chance of showers and thunderstorms, mainly between 1am and 5am. Partly cloudy, with a low around 76. Southwest wind 6 to 11 mph, with gusts as high as 22 mph.
Slight Chance
T-storms then
Chance
Showers
 Wednesday

Wednesday: A 40 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny and hot, with a high near 94. Heat index values as high as 102. South southwest wind 5 to 11 mph, with gusts as high as 21 mph.
Chance
Showers then
Chance
T-storms
 Wednesday
Night
Wednesday Night: Showers likely and possibly a thunderstorm. Increasing clouds, with a low around 74. Southwest wind 8 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 70%.
Showers
Likely

 Thursday

Thursday: A chance of showers and thunderstorms before 7am, then a chance of showers between 7am and 10am, then a chance of showers and thunderstorms after 10am. Mostly sunny and hot, with a high near 92. Chance of precipitation is 50%.
Chance
Showers then
Chance
T-storms
 Thursday
Night
Thursday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 71. Chance of precipitation is 60%.
Showers
Likely

 Friday

Friday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly sunny, with a high near 86. Chance of precipitation is 70%.
Showers
Likely

 Friday
Night
Friday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 69. Chance of precipitation is 60%.
Showers
Likely
Lo 78 °F Hi 95 °F Lo 76 °F Hi 94 °F Lo 74 °F Hi 92 °F Lo 71 °F Hi 86 °F Lo 69 °F

Hazardous Weather Outlook
Extreme Heat Warning
 

Tonight
 
 Partly cloudy, with a low around 78. East wind 6 to 8 mph becoming south southwest after midnight. Winds could gust as high as 18 mph.
Tuesday
 
 A 10 percent chance of showers before 7am. Mostly sunny and hot, with a high near 95. Heat index values as high as 107. South southwest wind 9 to 13 mph, with gusts as high as 23 mph.
Tuesday Night
 
 A 30 percent chance of showers and thunderstorms, mainly between 1am and 5am. Partly cloudy, with a low around 76. Southwest wind 6 to 11 mph, with gusts as high as 22 mph.
Wednesday
 
 A 40 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny and hot, with a high near 94. Heat index values as high as 102. South southwest wind 5 to 11 mph, with gusts as high as 21 mph.
Wednesday Night
 
 Showers likely and possibly a thunderstorm. Increasing clouds, with a low around 74. Southwest wind 8 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 70%.
Thursday
 
 A chance of showers and thunderstorms before 7am, then a chance of showers between 7am and 10am, then a chance of showers and thunderstorms after 10am. Mostly sunny and hot, with a high near 92. Chance of precipitation is 50%.
Thursday Night
 
 Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 71. Chance of precipitation is 60%.
Friday
 
 A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly sunny, with a high near 86. Chance of precipitation is 70%.
Friday Night
 
 Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 69. Chance of precipitation is 60%.
Independence Day
 
 A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 84.
Saturday Night
 
 Showers and thunderstorms likely. Mostly cloudy, with a low around 67. Chance of precipitation is 60%.
Sunday
 
 A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 83.
Sunday Night
 
 A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 66.
Monday
 
 A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 82.

 

Forecast from NOAA-NWS for Green Bay WI.