FPUS63 KDMX 190905 SFPIA IAZ001>099-192100- State Forecast for Iowa National Weather Service Des Moines IA 405 AM CDT Thu Mar 19 2026 .TODAY...Mostly sunny. Highs 54 to 72. .TONIGHT...Partly cloudy. Lows 39 to 45. .FRIDAY...Mostly sunny until late afternoon then becoming partly cloudy. Highs 63 to 77. .SATURDAY...Mostly clear. Lows 40 to 46. Highs 72 to 84. .SUNDAY...Partly cloudy. Lows 41 to 55. Highs 51 to 67. .MONDAY...Mostly clear. Lows 25 to 31. Highs 46 to 54. $$ 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.