FPUS63 KDMX 212106 SFPIA IAZ001>099-221000- State Forecast for Iowa National Weather Service Des Moines IA 405 PM CDT Tue Apr 21 2026 .TONIGHT...Clear. Lows 50 to 58. .WEDNESDAY...Sunny. Highs 78 to 84. .WEDNESDAY NIGHT...Mostly clear. Lows in the upper 50s. .THURSDAY...Partly cloudy. Chance of thunderstorms. Highs 73 to 79. .FRIDAY...Mostly clear. Slight chance of thunderstorms. Lows 43 to 57. Highs 63 to 69. .SATURDAY...Partly cloudy. Slight chance of showers. Lows 39 to 45. Highs 61 to 69. .SUNDAY...Partly cloudy. Chance of showers and slight chance of thunderstorms. Lows 43 to 49. Highs 63 to 71. $$ This forecast covers all of Iowa and is updated twice daily. Broad ranges in temperature depict high variability across the state. For location specific forecasts, please visit www.weather.gov. Please provide feedback on this product to nws.desmoines@noaa.gov.