National Weather Service Forecast for: Madison WI
Issued by: National Weather Service Milwaukee, WI
Updated: 12:32 am CDT Jun 30, 2026
 
Overnight

Overnight: Partly cloudy, with a low around 77. South wind around 15 mph.
Partly Cloudy

 Tuesday

Tuesday: Mostly sunny and hot, with a high near 93. Heat index values as high as 105. Southwest wind around 15 mph.
Hot

 Tuesday
Night
Tuesday Night: A 20 percent chance of showers and thunderstorms after 3am. Partly cloudy, with a low around 74. Southwest wind 10 to 15 mph.
Partly Cloudy
then Slight
Chance
T-storms
 Wednesday

Wednesday: A 10 percent chance of showers and thunderstorms before 7am. Sunny and hot, with a high near 93. Heat index values as high as 101. Southwest wind 10 to 15 mph.
Slight Chance
T-storms then
Sunny
 Wednesday
Night
Wednesday Night: A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 75. Southwest wind around 15 mph.
Chance
T-storms

 Thursday

Thursday: A chance of thunderstorms before 7am, then a chance of showers and thunderstorms after 1pm. Mostly sunny and hot, with a high near 91. Southwest wind 10 to 15 mph. Chance of precipitation is 40%.
Chance
T-storms

 Thursday
Night
Thursday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 72. Southwest wind around 5 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Showers
Likely

 Friday

Friday: Showers likely and possibly a thunderstorm. Partly sunny, with a high near 88. Southwest wind 5 to 10 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Showers
Likely

 Friday
Night
Friday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 70. Chance of precipitation is 60%.
Showers
Likely
Lo 77 °F Hi 93 °F Lo 74 °F Hi 93 °F Lo 75 °F Hi 91 °F Lo 72 °F Hi 88 °F Lo 70 °F

Hazardous Weather Outlook
Extreme Heat Warning
 

Overnight
 
 Partly cloudy, with a low around 77. South wind around 15 mph.
Tuesday
 
 Mostly sunny and hot, with a high near 93. Heat index values as high as 105. Southwest wind around 15 mph.
Tuesday Night
 
 A 20 percent chance of showers and thunderstorms after 3am. Partly cloudy, with a low around 74. Southwest wind 10 to 15 mph.
Wednesday
 
 A 10 percent chance of showers and thunderstorms before 7am. Sunny and hot, with a high near 93. Heat index values as high as 101. Southwest wind 10 to 15 mph.
Wednesday Night
 
 A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 75. Southwest wind around 15 mph.
Thursday
 
 A chance of thunderstorms before 7am, then a chance of showers and thunderstorms after 1pm. Mostly sunny and hot, with a high near 91. Southwest wind 10 to 15 mph. Chance of precipitation is 40%.
Thursday Night
 
 Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 72. Southwest wind around 5 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday
 
 Showers likely and possibly a thunderstorm. Partly sunny, with a high near 88. Southwest wind 5 to 10 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday Night
 
 Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 70. Chance of precipitation is 60%.
Independence Day
 
 A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 86.
Saturday Night
 
 A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 67.
Sunday
 
 A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 85.
Sunday Night
 
 A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 65.
Monday
 
 A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 84.

 

Forecast from NOAA-NWS for Madison WI.