Indianapolis began Thursday with morning temperatures ranging from 51 degrees to around 63 degrees, with a few clouds and a sunny, unusually warm afternoon ahead. Highs should reach near 80 degrees, giving residents a summerlike stretch before a wetter pattern moves in this weekend.
Sunny, Dry Weather Holds Through Thursday
Thursday will stay sunny from morning through evening, with light west-northwest winds increasing to around 8 mph later in the day. Some humidity readings are in the 20% to 30% range.
Thursday night will be mostly clear with a low near 52 degrees. Friday is forecast to bring highs in the low 80s.
Precipitation Develops Late Saturday
Precipitation is forecast to develop late Saturday evening.
Sunday is forecast to bring widespread rain, with highs in the upper 60s.
Putting the Rain Chances in Context
For statewide context, the Indiana Department of Natural Resources said the September 8, 2026, U.S. Drought Monitor showed isolated abnormally dry areas in southwest and south-central Indiana, with no drought conditions elsewhere in the state. That statewide snapshot does not establish ground conditions at a particular Indianapolis location.
The National Weather Service Louisville office explains that an 80% precipitation chance means rain of at least 0.01 inch is likely at a particular point during the stated forecast period. It does not indicate what share of the period will be rainy or how much rain will fall.
Sunday Showers and Monday Sunshine
Showers are forecast Sunday, with a chance of showers Sunday night. Columbus Day on Monday should bring mostly sunny skies with highs in the low to mid-80s.
