FPUS63 KDMX 212105 SFPIA IAZ001>099-221000- State Forecast for Iowa National Weather Service Des Moines IA 405 PM CDT Sat Mar 21 2026 .TONIGHT...Mostly clear. Lows 40 to 52. .SUNDAY...Partly cloudy. Highs 49 to 61. .SUNDAY NIGHT...Clear. Lows in the upper 20s. .MONDAY...Mostly sunny until late afternoon then becoming partly cloudy. Highs 51 to 57. .TUESDAY...Partly cloudy. Lows in the upper 30s. Highs 59 to 65. .WEDNESDAY...Partly cloudy. Slight chance of rain. Lows in the lower 40s. Highs 62 to 74. .THURSDAY...Partly cloudy. Lows 43 to 49. Highs 58 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.