| NWS Forecast for: Cass County Issued by: National Weather Service Des Moines, IA Last Update: 608 PM CDT Sat Sep 5 2026 |  |
Tonight: Partly cloudy. Lows in the lower 70s. East winds around 5 mph. Heat index values up to 100 early this evening. Sunday: Partly sunny. A slight chance of showers and thunderstorms in the morning, then a chance of showers and thunderstorms in the afternoon. Humid with highs in the upper 80s. Southeast winds 5 to 10 mph. Chance of rain 50 percent. Sunday Night: Mostly cloudy. Showers likely with a chance of thunderstorms in the evening, then a slight chance of showers and thunderstorms after midnight. Humid with lows in the upper 60s. Southeast winds around 10 mph. Chance of rain 70 percent. Labor Day: Mostly sunny. Humid with highs in the upper 80s. Southeast winds 10 to 15 mph. Monday Night: Partly cloudy. Lows in the lower 70s. Southeast winds 10 to 15 mph with gusts up to 25 mph. Tuesday: Mostly sunny. Highs in the lower 90s. Heat index values up to 100 in the afternoon. Tuesday Night: Showers likely with a chance of thunderstorms. Lows in the upper 60s. Chance of rain 70 percent. Wednesday: Mostly sunny. A slight chance of showers in the morning. Highs in the mid 80s. Chance of rain 20 percent. Wednesday Night: Partly cloudy in the evening, then becoming mostly cloudy. A slight chance of thunderstorms. A slight chance of showers in the evening, then a chance of showers after midnight. Lows in the lower 60s. Chance of rain 40 percent. Thursday: Mostly sunny. A slight chance of showers in the morning. Highs in the lower 80s. Chance of rain 20 percent. Thursday Night: Mostly clear in the evening, then becoming partly cloudy. A slight chance of showers. A slight chance of thunderstorms after midnight. Lows in the lower 60s. Chance of rain 20 percent. Friday: Partly sunny with a slight chance of showers and thunderstorms in the morning, then sunny in the afternoon. Highs in the mid 80s. Chance of rain 20 percent. Friday Night: Mostly clear with a slight chance of showers and thunderstorms. Lows in the mid 60s. Chance of rain 20 percent. Saturday: Sunny. Highs in the mid 80s. | |
| Zone Forecast: Cass County | |
Visit your local NWS office at: https://www.weather.gov/desmoines |