Indiana Weather Alert: Scattered Thunderstorms and 91°F Heat Hit Indianapolis by Saturday — Summer Safety Tips for Road Travel

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Indianapolis, IN – Heat and storm chances will grip central Indiana again Saturday as summer weather tightens its hold heading into July.

According to the National Weather Service, Indianapolis could hit 91°F Saturday afternoon, with a heat index nearing 100°F. Scattered thunderstorms may develop after 2 p.m., bringing strong wind gusts and brief downpours. Drivers should expect delays, especially along I-65 and I-70, and be prepared for low visibility during any heavier cells.

Southwest winds will pick up to 9 mph during the day and drop slightly into the evening, keeping muggy conditions in place overnight. Rainfall amounts could reach a quarter inch in some areas, with higher totals under stronger storms.

Sunday will offer little relief. Another round of heat and thunderstorm activity is expected, with a high near 91°F and storm chances increasing after 2 p.m. If you’re heading outdoors, drink water regularly and avoid strenuous activities during peak heat hours. Events in public parks or outdoor venues should plan for fast-moving showers and possible lightning delays.

By Monday, rain chances rise again with storms likely after 8 a.m., followed by another 88°F day — a trend that holds into early next week. Fireworks and Fourth of July plans may face disruptions if this storm pattern lingers.

⛅ 5-Day Forecast for Indianapolis (June 27 – July 2):

  • Friday: High 91°F. Scattered storms after 3 p.m. Heat index near 100°F.
  • Saturday: High 90°F. Showers/storms likely after 2 p.m.
  • Sunday: High 91°F. Storms possible after 2 p.m.
  • Monday: High 88°F. Showers/storms likely, mainly between 8 a.m. – 2 p.m.
  • Tuesday: High 86°F. Mostly sunny, low chance of storms before 8 a.m.