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Indianapolis Basks In 71-Degree Fall Fake-Out Before Chill Creeps Back

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Published on October 21, 2026
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Indianapolis is heading into a sunny, mild stretch after patchy fog briefly clouded parts of the city Wednesday morning. Skies will clear quickly, with temperatures climbing from the mid-40s early to a high near 71 and little wind to complicate the day.

Sunshine Takes Over After Morning Fog

The morning fog has cleared; Indianapolis International Airport was reporting fair conditions at 12:54 p.m. Wednesday. The National Weather Service now calls for sunny skies this afternoon, with a high near 72 and calm winds. There is no rain in the forecast. The latest Indianapolis forecast and airport observation reflect those conditions.

Wednesday night will be mostly clear, with temperatures dipping to around 45; patchy fog could develop after 5 a.m. Thursday will bring patchy fog early, then sunny skies and a high near 72. Winds will be calm, becoming north-northeast around 5 mph in the afternoon. The updated National Weather Service forecast includes the early fog chance.

Warm, Dry Weather Holds Through The Weekend

Friday and Saturday will remain sunny, with highs near 70 and 71, respectively. Sunday could be the warmest day of the stretch, reaching about 74 under mostly sunny skies, while overnight lows settle in the mid-40s.

The National Weather Service expects patchy ground fog to return late Wednesday night in low-lying parts of central Indiana, then clear quickly after sunrise Thursday. Additional patchy fog is possible Thursday night into early Friday and again Friday or Saturday night, so the sunny daytime forecast does not rule out locally reduced visibility before dawn. The central Indiana hazardous weather outlook says spotter activation is not expected.

The extended dry spell is expected to continue Monday, when Indianapolis should see mostly sunny skies and a high near 73. Light winds and a broad run of clear or partly cloudy skies should make for comfortable conditions for outdoor plans across central Indiana. The updated forecast puts Monday’s high near 23°C, or 73°F.

Small Rain Chance Arrives Tuesday

Tuesday will be partly sunny, with a high near 70. A stalled boundary approaching central Indiana could bring a chance of rain around Tuesday, though the updated forecast does not specify the earlier 8 a.m. to 2 p.m. window or a separate Tuesday-night shower chance. The Indianapolis forecast gives Tuesday’s high as 21°C, while the local forecast discussion places the better rain chance near Tuesday.

The mild, dry stretch is tied to a broad ridge of high pressure that is keeping most weather systems away from central Indiana. The National Weather Service expects temperatures mainly in the 40s to low 70s through the forecast period, with the ridge supporting dry weather before a stalled boundary nears the region around Tuesday. That leaves the late-period rain chance in play, but the outlook says the potential for moderate or heavy rain is very low. The Indianapolis forecast discussion describes that pattern.

No watches, warnings or advisories are in effect for the Indianapolis area.