FPUS63 KDMX 222120 SFTIA IAZ001>099-231000- Tabular State Forecast for Iowa National Weather Service Des Moines IA 420 PM CDT Sat Aug 22 2026 ROWS INCLUDE... Daily predominant daytime weather 6AM-6PM Forecast temperatures...early morning low/daytime high Probability of precipitation nighttime 6PM-6AM/daytime 6AM-6PM - indicates temperatures below zero MM indicates missing data FCST FCST FCST FCST FCST FCST FCST Sun Mon Tue Wed Thu Fri Sat Aug 23 Aug 24 Aug 25 Aug 26 Aug 27 Aug 28 Aug 29 ...WESTERN IOWA... Spencer Ptcldy Ptcldy Ptcldy Sunny Sunny Ptcldy Ptcldy 52/79 57/76 60/83 59/82 56/81 56/81 61/81 00/00 50/50 20/20 20/20 00/00 10/20 40/40 Sioux City Ptcldy Ptcldy Ptcldy Sunny Sunny Ptcldy Ptcldy 57/78 61/80 64/83 62/82 58/81 61/81 64/82 00/10 50/50 10/10 20/20 00/10 30/30 50/50 Carroll Ptcldy Shwrs Ptcldy Sunny Sunny Ptcldy Ptcldy 55/80 60/78 63/83 64/85 60/83 61/82 64/83 00/00 50/50 10/10 20/20 00/00 10/20 40/40 Atlantic Ptcldy Ptcldy Ptcldy Sunny Sunny Ptcldy Ptcldy 57/78 62/79 64/83 65/83 62/81 61/81 65/82 00/10 40/40 00/10 20/20 20/10 10/20 40/40 Shenandoah Ptcldy Ptcldy Ptcldy Ptcldy Sunny Ptcldy Ptcldy 60/82 64/83 66/86 68/87 64/85 65/85 68/86 00/00 40/40 10/10 40/40 00/10 20/20 30/30 ...CENTRAL IOWA... Mason City Sunny Ptcldy Ptcldy Sunny Sunny Ptcldy Ptcldy 53/78 55/76 61/83 63/82 60/81 58/81 62/81 00/00 10/20 20/20 20/20 00/00 00/10 30/40 Fort Dodge Ptcldy Shwrs Ptcldy Sunny Sunny Ptcldy Ptcldy 54/81 59/78 62/84 63/85 60/83 59/83 64/83 00/00 40/50 10/10 20/20 20/00 10/10 40/40 Ames Ptcldy Ptcldy Ptcldy Sunny Sunny Ptcldy Ptcldy 56/79 60/78 64/84 65/85 63/83 61/82 65/83 00/00 20/40 10/10 20/20 10/00 00/10 30/30 Marshalltown Sunny Ptcldy Ptcldy Sunny Sunny Sunny Ptcldy 54/79 57/78 61/83 64/84 62/82 60/82 63/82 00/00 10/30 10/10 20/20 10/00 00/10 20/30 Des Moines Ptcldy Ptcldy Ptcldy Sunny Sunny Ptcldy Ptcldy 60/79 62/79 65/85 68/85 65/83 64/83 67/84 00/00 30/40 10/10 20/20 10/00 00/10 30/30 Creston Ptcldy Ptcldy Ptcldy Ptcldy Sunny Ptcldy Ptcldy 58/80 63/80 65/85 68/85 64/83 64/83 67/84 00/00 20/40 10/10 30/30 00/00 10/10 30/30 Lamoni Ptcldy Ptcldy Ptcldy Ptcldy Sunny Ptcldy Ptcldy 60/81 63/80 65/85 67/86 65/84 64/83 67/85 00/00 20/40 10/10 30/20 10/00 00/10 20/30 ...EASTERN IOWA... Decorah Sunny Ptcldy Ptcldy Sunny Sunny Sunny Ptcldy 54/76 53/76 59/80 63/82 61/80 59/80 61/80 00/00 00/10 10/20 20/20 10/00 00/00 20/30 Oelwein Sunny Ptcldy Ptcldy Sunny Sunny Sunny Ptcldy 55/75 56/75 61/79 64/81 61/79 60/79 63/79 00/00 00/10 10/20 20/20 10/00 00/10 20/30 Waterloo Sunny Ptcldy Ptcldy Sunny Sunny Sunny Ptcldy 54/77 56/76 62/81 64/83 62/81 60/80 64/81 00/00 00/10 20/20 20/20 10/00 00/10 20/30 Dubuque Sunny Ptcldy Ptcldy Sunny Sunny Sunny Ptcldy 56/77 56/77 60/79 65/83 63/81 61/80 63/80 00/00 00/10 00/20 20/20 20/10 10/10 10/30 Cedar Rapids Sunny Ptcldy Ptcldy Sunny Sunny Sunny Ptcldy 56/80 57/79 62/82 65/85 63/82 62/82 64/83 00/00 00/10 20/20 20/20 20/00 00/10 20/20 Iowa City Sunny Ptcldy Ptcldy Sunny Sunny Sunny Ptcldy 57/80 58/79 63/83 66/85 65/83 63/83 65/83 00/00 00/10 20/20 20/20 20/10 00/10 20/20 Quad Cities Sunny Ptcldy Ptcldy Ptcldy Sunny Sunny Ptcldy 57/79 57/78 61/80 65/84 64/82 62/81 64/81 00/00 00/10 00/10 20/20 20/10 10/10 10/20 Ottumwa Sunny Ptcldy Ptcldy Sunny Sunny Sunny Ptcldy 57/82 60/80 64/85 67/87 65/84 63/84 65/85 00/00 10/20 20/10 20/20 20/10 00/10 20/30 Burlington Sunny Ptcldy Ptcldy Ptcldy Sunny Sunny Ptcldy 58/79 58/78 61/81 65/84 65/82 63/81 64/82 00/00 00/10 10/10 20/20 20/10 00/10 10/20 Keokuk Sunny Ptcldy Ptcldy Ptcldy Sunny Sunny Ptcldy 58/79 60/78 63/82 67/85 66/82 64/82 66/83 00/00 00/10 10/10 20/20 20/10 00/10 20/20 $$