FPUS63 KDMX 172105 SFPIA IAZ001>099-181000- State Forecast for Iowa National Weather Service Des Moines IA 405 PM CDT Tue Mar 17 2026 .TONIGHT...Cloudy early in the evening then becoming partly cloudy. Chance of snow. Lows 18 to 26. .WEDNESDAY...Mostly sunny early in the morning then becoming partly cloudy. Highs 43 to 59. .WEDNESDAY NIGHT...Partly cloudy. Lows 33 to 39. .THURSDAY...Mostly clear. Highs 51 to 67. .FRIDAY...Partly cloudy. Lows 36 to 42. Highs 64 to 78. .SATURDAY...Mostly clear. Lows 40 to 46. Highs 71 to 83. .SUNDAY...Partly cloudy. Lows 41 to 51. Highs 53 to 65. $$ 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.