Madison, WI Weather
79°F
Slight Chance Showers And Thunderstorms
Data: NOAA/National Weather Service. Forecast updated Sep 2, 2026, 1:42 AM UTC. Discussion issued Sep 1, 2026, 11:55 PM UTC.
Air Quality Index: 30 (Good)
SPC Convective Outlook: Marginal Risk
Local discussion
- Expect unseasonably warm and humid weather with heat indices reaching the upper 90s to near 100 degrees.
- There will be occasional chances for thunderstorms, especially in the evening and overnight hours.
- Some storms could be strong, but confidence in severe weather is low due to strong atmospheric capping.
Hazards
- Severe: Isolated strong storms possible with gusty winds and hail, but overall severe weather potential is low. (Tonight into Wednesday morning; Central and east-central Wisconsin)