Des Moines, Iowa – Thunderstorms could roll into central Iowa by Tuesday night, bringing a sharp shift in summer weather for Des Moines and surrounding areas.
According to the National Weather Service in Des Moines, there’s a 20% chance of showers and thunderstorms after 6 p.m. Tuesday, followed by a 50% chance continuing into Wednesday and Wednesday night. Most of the activity is expected near I-235 and into the southern metro, with locally heavy rainfall possible. South winds between 5–10 mph will increase storm mobility, raising the chance of evening lightning.
Wednesday looks to be the most active day, with scattered thunderstorms developing by mid-afternoon. Highs will climb near 88°F with humidity rising sharply, creating sticky and storm-friendly conditions. Localized downpours could cause brief flash flooding in low-lying areas and underpasses, especially along major roadways like Highway 5 and I-80.
Thursday may offer a short break, though a 30% chance of storms lingers into early Friday. While no severe alerts have been issued yet, residents are urged to charge devices, avoid flooded roads, and check for weather updates hourly.
By the weekend, storm chances remain elevated. Saturday brings a 40% chance of rain, with high temps in the upper 80s. Sunday appears drier, though humidity will persist as summer heat rebuilds into next week.
⚠️ More storms are possible beyond Sunday — stay alert for updated advisories and changing weekend plans.
📅 Five-Day Weather Outlook (July 15–20)
- Tuesday: Sunny, high near 90°F. Slight chance of storms after 6 p.m.
- Wednesday: 50% chance of thunderstorms. High near 88°F.
- Thursday: 30% chance of showers. High around 80°F.
- Friday: Partly sunny. 30% chance of early showers. High near 81°F.
- Saturday: 40% chance of storms. High around 87°F.
- Sunday: Partly sunny, dry trend. High near 86°F.
