Indianapolis, IN – Indiana is heading into a stretch of nearly perfect late-summer weather, but rising heat and weekend storms could shift plans. Sunshine dominates through Friday, with dry roads across I-65, I-70, and central Indiana’s busiest commuter routes. Drivers should enjoy smooth travel, but outdoor workers and athletes need to prepare for warmer afternoons as highs climb into the upper 80s.
According to the National Weather Service in Indianapolis, skies remain clear Wednesday with highs near 84 and calm winds. By Thursday and Friday, temperatures push into the mid-to-upper 80s under mostly sunny skies. Humidity stays moderate, but Friday afternoon could feel noticeably warmer. Emergency managers advise limiting strenuous outdoor activity during peak afternoon hours and staying hydrated.
Saturday continues warm, topping out near 88 under mostly sunny skies. Winds shift slightly southwest, helping fuel a brief uptick in humidity. While the first half of the weekend looks dry, storm chances return late Saturday night into Sunday morning. Only a 20 percent chance of showers is noted now, but any storms could bring brief downpours and lightning hazards. Outdoor gatherings should plan backup shelter and monitor updates.
Sunday turns hotter, with highs near 90 and storm chances continuing into the night. Monday looks drier but stays hot, with highs around 88 under mostly sunny skies.
Clear skies and dry roads remain the story for the workweek, but late weekend storms could be the first sign of an active September weather pattern. Additional advisories may follow if storm chances strengthen.
Five-Day Forecast for Indianapolis, IN
- Wednesday: Sunny, high near 84. Low around 59.
- Thursday: Sunny, high near 85. Low around 60.
- Friday: Sunny, high near 87. Low around 62.
- Saturday: Mostly sunny, high near 88. Storm chance late. Low around 65.
- Sunday: Partly sunny, high near 90. 20% storm chance. Low near 65.
