Des Moines, Iowa – Flash flooding and damaging wind gusts could slow traffic across Des Moines and central Iowa today, with impacts especially likely on urban roadways like I-235. Rainfall totals between a quarter and half an inch are expected — enough to trigger ponding and minor flooding in low-lying spots.
According to the National Weather Service in Des Moines, showers and thunderstorms are likely throughout the day Tuesday, May 20, followed by lighter rain Tuesday night. East winds up to 16 mph, with gusts approaching 25 mph, could down small limbs and make travel difficult on bridges and elevated roadways.
Storms ease overnight, but more rain is expected Wednesday afternoon and evening. Showers remain in the picture through early Thursday. That could lead to saturated ground conditions, especially in Polk, Story, Dallas, and surrounding counties. Commuters are urged to use caution and avoid water-covered roads.
If you’re traveling around Des Moines, especially near the state fairgrounds or along University Avenue, plan for slowdowns and wet conditions. Urban areas are most vulnerable to flash flooding today.
Looking ahead, Thursday and Friday bring drier skies and warmer temperatures. Highs in the mid-60s to upper 60s return, and Memorial Day weekend looks relatively mild.
🔎 5-Day Forecast for Des Moines
- Wednesday: Mostly cloudy, showers late. High: 58°F
- Thursday: Partly sunny. High: 64°F
- Friday: Mostly sunny. High: 67°F
- Saturday: 40% chance of showers. High: 68°F
- Sunday [Memorial Day]: Slight chance of rain, otherwise mostly sunny. High: 70°F
