FPUS63 KDMX 202105 SFPIA IAZ001>099-211000- State Forecast for Iowa National Weather Service Des Moines IA 405 PM CDT Fri Mar 20 2026 .TONIGHT...Clear. Lows 42 to 50. .SATURDAY...Sunny. Highs 79 to 91. .SATURDAY NIGHT...Mostly clear. Lows 41 to 55. .SUNDAY...Partly cloudy until late afternoon then clearing. Highs 50 to 66. .MONDAY...Mostly clear. Lows 27 to 33. Highs 50 to 56. .TUESDAY...Partly cloudy. Lows in the upper 30s. Highs 57 to 63. .WEDNESDAY...Partly cloudy. Lows in the upper 30s. Highs 54 to 70. $$ 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.