Indianapolis

Muggy Indy On Edge As Late-Night Storms Threaten To Swamp Streets

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Published on July 09, 2026
Muggy Indy On Edge As Late-Night Storms Threaten To Swamp StreetsSource: Google Street View

Central Indiana woke up in a steam bath today, with temperatures hovering near 70°F at Indianapolis International and dewpoints in the upper 60s. The air is sticky, fog is patchy in low-lying spots, and visibility may be reduced on the morning commute. Sunshine should break through by midday and afternoon, sending highs into the upper 80s. But the real headline comes after dark, when a round of thunderstorms is expected to rumble across the metro.

If you have evening plans, keep them flexible and keep your phone nearby. Once storms get organized, conditions could go from calm to chaotic in a hurry.

Tonight's Timeline And Threat

Showers and thunderstorms are expected to ramp up Thursday evening and continue into the overnight hours (tonight, July 9), with the most active stretch likely after sunset. The National Weather Service reports that a broken line of storms could bring damaging wind gusts and heavy, efficient downpours.

Forecasters are pegging the chance of showers or storms overnight at roughly 70%, with initial rainfall totals around a quarter to a half inch. Localized spots could see more where storms repeatedly track over the same neighborhoods. The main concerns: pockets of localized flooding from brief but intense rain and strong winds capable of knocking down limbs or causing minor damage.

Impacts And How To Prepare

Drivers should be ready for sudden tropical-style downpours that can quickly pond water on roads and dramatically cut visibility. Gusty winds may trigger scattered power flickers and send weaker branches or unsecured items flying.

If your basement tends to take on water, now is the time to move valuables off the floor. Avoid driving through standing water, even if it “doesn’t look that deep,” and secure outdoor furniture, trash bins, and anything else that might turn into airborne yard decor once storms roll in. Keeping devices charged this evening is a smart move in case outages pop up.

For more background on the regional flood concern, see our earlier coverage of the storm slam poised to swamp Indy streets.

Weekend And Week Ahead

Storm chances do not completely shut off once tonight’s round moves through. On-and-off rain and a few storms are possible at times Friday into Saturday, with highs in the mid-80s and a continued risk for localized heavy downpours. By Sunday, conditions should trend drier with more sunshine and highs still in the mid-80s.

Early next week, a warmer and somewhat drier pattern builds in. Highs are expected to push toward 90°F, with humidity easing just a bit for parts of the metro, making it feel more like a standard midsummer heat stretch than a swamp.

Where To Watch

Check radar and local alerts this evening before heading out, especially for late-night plans. If storms intensify or flooding develops, follow guidance from emergency officials and steer clear of flooded roads until they are cleared and deemed safe.