FPUS63 KDMX 170906 SFPIA IAZ001>099-172100- State Forecast for Iowa National Weather Service Des Moines IA 405 AM CDT Tue Mar 17 2026 .TODAY...Sunny early in the morning then becoming mostly cloudy. Chance of snow. Highs 23 to 33. .TONIGHT...Cloudy early in the evening then becoming partly cloudy. Chance of snow. Lows 18 to 26. .WEDNESDAY...Mostly sunny until late afternoon then becoming partly cloudy. Highs 43 to 59. .THURSDAY...Mostly clear. Lows 31 to 39. Highs 51 to 71. .FRIDAY...Partly cloudy. Lows 37 to 45. Highs 61 to 77. .SATURDAY...Mostly clear. Lows 39 to 47. Highs 67 to 81. $$ 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.