Indianapolis, Indiana – Mild morning air will give way to a sharp heat buildup across central Indiana through midweek. Indianapolis reaches 85 today, then climbs 10 degrees by Tuesday as summer heat takes control.
According to the National Weather Service in Indianapolis, mostly sunny skies will push today’s high near 85. Winds remain light and variable.
Indianapolis International Airport reported 67 degrees before 9 a.m. Humidity stood at 79%, with an east wind near 3 mph.
Sunday marks the first step upward. Mostly sunny skies send temperatures to 89 degrees, with southwest winds increasing to 3 to 8 mph.
Monday brings a more noticeable change. Indianapolis reaches 92 degrees, while southwest gusts could hit 18 mph. The morning low rises to around 72.
Plan strenuous outdoor activities for earlier hours as the heat intensifies. Carry water and give children and pets frequent cooling breaks.
Tuesday becomes the hottest day shown alongside Wednesday. Temperatures reach 95 degrees Tuesday, followed by a warm low near 76.
Wednesday reaches 95 again. Southwest winds increase to 5 to 10 mph, with gusts potentially reaching 18 mph.
Drivers using I-65, I-70, I-465 and downtown streets should prepare for increasingly hot vehicles and pavement through midweek. Never leave children or pets inside parked cars.
The supplied five-day Indianapolis outlook remains dry. It shows no specific tornado, hail or flooding threat through Wednesday.
The Weather Prediction Center expects heat to expand into the Ohio Valley early next week, supporting the local temperature surge. Its supplied short-range discussion places the more active thunderstorm threats elsewhere.
A change appears Thursday, when a 20% shower and thunderstorm chance develops. That chance rises to 30% Thursday night and continues Friday.
Five-Day Indianapolis Weather Outlook
- Today: Mostly sunny. High 85.
- Sunday: Mostly sunny and warmer. High 89.
- Monday: Mostly sunny and hot. High 92. Gusts to 18 mph.
- Tuesday: Mostly sunny and hot. High 95.
- Wednesday: Sunny and hot. High 95. Gusts to 18 mph.




