Indianapolis/ Weather & Environment

Indianapolis Basks In Summerlike 70s Stretch Ahead Of Halloween

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Published on October 25, 2026
Indianapolis Basks In Summerlike 70s Stretch Ahead Of HalloweenSource: Google Street View

Indianapolis is starting Sunday with clear skies and temperatures near 48 degrees, but the morning chill is on a short timer. Patchy fog could briefly show up around 8 to 9 a.m. before mostly sunny skies push the city to a mild 74 degrees.

Sunshine Takes Over After A Foggy Start

The fog should be limited, and winds will stay light from the southeast at about 3 mph, with no rain expected Sunday. The National Weather Service in Indianapolis also calls for a mostly clear Sunday night, with a low near 49 degrees.

A Mild Week Is Lined Up

Monday stays mostly sunny with a high near 75, followed by a partly sunny 73 on Tuesday. Wednesday returns to mostly sunny skies and another 75-degree high, keeping the workweek warmer than a typical late-October stretch.

Thursday looks like the warmest day of the run, with sunshine and a high near 78, while Friday remains mostly sunny near 77. Winds may be a little more noticeable later in the week, but they are still forecast to remain manageable at generally 8 mph or less.

Halloween Weekend Starts Mostly Dry

Saturday should begin partly sunny, with a slight chance of rain showers developing after 2 p.m. The rain chance is only 20%, and no watches or warnings are listed, so most outdoor plans currently look more likely to face mild weather than a washout.