Indianapolis, Indiana – Seasonable heat and muggy conditions will grip Indiana into the weekend as daily highs climb into the upper 80s and lower 90s, raising the risk of thunderstorms Friday through Sunday. The greatest threat arrives Saturday, when severe weather could disrupt outdoor plans and travel across Indianapolis and surrounding counties.
According to the National Weather Service Indianapolis, Thursday will be the driest day of the week, with no precipitation expected and afternoon highs ranging from 87° to 90°. Thunderstorm chances increase Friday, with scattered storms possible in the evening and a heightened risk of severe weather stretching from Friday night into Saturday. Saturday’s highs may top 91° before strong thunderstorms move in, bringing lightning, heavy downpours, and possible gusty winds.
Communities across Marion, Hamilton, Hendricks, and Johnson counties should prepare for sudden downpours and potential localized flooding, especially during outdoor activities and on major routes like I-465 and I-70. Residents are urged to monitor alerts, avoid flooded roadways, and keep devices charged in case of power outages.
Humidity and heat will linger through Sunday, with more scattered storms possible before a slight cooldown early next week. More advisories or alerts may follow if the threat intensifies.
Five-Day Indiana Weather Outlook:
- Tonight: Partly cloudy, lows 66°–70°
- Thursday: Mostly sunny, highs 87°–90°
- Friday: Storms possible, highs 86°–90°, storms late
- Saturday: Strong storms likely, highs 86°–91°, storms continue into evening
- Sunday: Scattered storms, highs 84°–88°, turning partly cloudy late
