Indianapolis, Indiana – Sunshine and typical summer warmth will quickly give way to dangerous heat across Indiana, as temperatures and humidity ramp up sharply beginning Wednesday. Residents in western Indiana should prepare for a prolonged period of extreme heat, with heat index values reaching the mid-90s to mid-100s each day through Sunday.
According to the National Weather Service in Indianapolis, a heat advisory is in effect for western portions of the state starting Wednesday. Daytime highs will climb from 87° to 93° Wednesday, peaking near 93° on Thursday, with humidity pushing “feels like” temperatures even higher. Lows will offer little relief, hovering in the low- to mid-70s.
Cities such as Terre Haute, Lafayette, and Indianapolis are expected to face the brunt of the heat, especially in the afternoons. Residents should avoid outdoor activities during peak hours, stay hydrated, and check on vulnerable neighbors. Schools, daycares, and outdoor workers should use extra caution. Cooling centers are open across Marion, Vigo, and Tippecanoe counties.
This stretch marks one of the summer’s most intense heat waves so far, rivaling similar late-July events in recent years. Power grids and utilities may be strained as residents rely on air conditioning to stay safe.
The heat advisory will likely remain in effect through the weekend, with additional alerts possible if conditions worsen. Stay tuned for updates and further guidance from local officials.
Five Day Indiana Weather Outlook (July 23–27):
- Wednesday: Sunny, 87–93°. Heat index: 95–105°. Lows: 68–75°.
- Thursday: Mostly sunny, 90–93°. Heat index: 97–106°. Lows: 72–76°.
- Friday: Partly cloudy, 86–91°. Scattered p.m. storms. Heat index: 95–102°. Lows: 70–75°.
- Saturday: Partly cloudy, 84–90°. Chance of storms. Heat index: 92–100°. Lows: 71–75°.
- Sunday: Partly cloudy, 86–91°. Isolated storms. Heat index: 93–101°. Lows: 71–75°.
