National Weather Service Forecast

Indianapolis, IN Weather

7-Day Forecast

Today: 61°F / 61°F

Today's Forecast

Patchy fog after 5am. Mostly clear, with a low around 61. West northwest wind 2 to 6 mph. New rainfall amounts less than a tenth of an inch possible.

7-Day Outlook

Sat, 8/22Fog61°61°2%

Sun, 8/23Fog78°57°

Mon, 8/24Sunny76°59°1%

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Tue, 8/25Sunny80°62°4%

Wed, 8/26Sunny83°65°21%

Thu, 8/27Thunderstorm84°65°20%

Fri, 8/28Sunny82°64°3%

Sat, 8/29Sunny83°68°5%

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Data from the National Weather Service

Last updated Sun, Aug 23, 1:15 AM UTC

Upper air over Indianapolis

The nearest radiosonde launch is Wilmington, about 127 miles away. A weather balloon goes up twice a day and measures temperature, humidity and wind all the way through the atmosphere — which is what forecasters actually read to judge whether storms will fire, and how a surface forecast was arrived at.

Read the ILN sounding