FPUS63 KDMX 232120 SFTIA IAZ001>099-241000- Tabular State Forecast for Iowa National Weather Service Des Moines IA 420 PM CDT Sun Aug 23 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 Mon Tue Wed Thu Fri Sat Sun Aug 24 Aug 25 Aug 26 Aug 27 Aug 28 Aug 29 Aug 30 ...WESTERN IOWA... Spencer Ptcldy Ptcldy Sunny Sunny Ptcldy Mocldy Ptcldy 59/80 61/85 61/82 55/82 55/82 60/82 62/83 20/20 10/20 10/00 00/00 10/20 60/60 40/40 Sioux City Mocldy Ptcldy Sunny Sunny Ptcldy Mocldy Ptcldy 62/80 64/84 63/82 58/82 60/81 64/83 65/84 40/30 10/20 10/00 00/00 30/40 50/50 40/30 Carroll Ptcldy Ptcldy Sunny Sunny Ptcldy Tstrms Shwrs 61/79 64/85 65/84 61/84 61/83 64/84 67/86 20/20 10/20 10/10 00/00 20/30 60/60 50/50 Atlantic Ptcldy Ptcldy Sunny Sunny Ptcldy Tstrms Ptcldy 61/79 64/81 66/82 61/81 61/81 65/82 68/84 30/30 00/10 20/20 00/00 20/30 50/50 40/40 Shenandoah Ptcldy Ptcldy Sunny Sunny Ptcldy Ptcldy Ptcldy 62/81 66/85 67/86 62/85 64/86 68/87 71/88 40/40 00/10 30/30 00/00 20/30 50/50 40/40 ...CENTRAL IOWA... Mason City Ptcldy Ptcldy Sunny Sunny Ptcldy Shwrs Shwrs 55/80 62/84 64/82 59/82 58/82 62/81 64/83 00/00 10/20 20/10 00/00 00/10 50/50 50/50 Fort Dodge Ptcldy Ptcldy Sunny Sunny Ptcldy Tstrms Shwrs 59/81 64/85 64/84 61/84 59/83 64/82 66/84 10/10 10/20 10/10 00/00 10/20 60/60 50/50 Ames Ptcldy Ptcldy Sunny Sunny Ptcldy Tstrms Tstrms 60/81 64/83 67/85 63/83 61/83 65/83 68/85 10/10 10/20 10/10 00/00 10/20 50/50 50/50 Marshalltown Ptcldy Ptcldy Sunny Sunny Ptcldy Ptcldy Shwrs 57/80 61/82 66/83 61/82 59/82 63/82 66/84 00/10 00/10 20/20 00/00 10/10 40/40 50/50 Des Moines Ptcldy Ptcldy Sunny Sunny Ptcldy Ptcldy Ptcldy 62/81 66/84 69/85 65/83 64/84 67/84 70/86 10/10 10/10 20/20 00/00 10/20 40/40 40/40 Creston Ptcldy Ptcldy Sunny Sunny Ptcldy Ptcldy Ptcldy 62/81 66/84 68/84 63/83 63/84 67/85 70/86 30/30 00/10 20/20 00/00 10/20 40/40 40/40 Lamoni Ptcldy Ptcldy Sunny Sunny Ptcldy Ptcldy Ptcldy 62/81 65/84 68/86 64/84 64/84 67/85 70/87 20/20 00/10 20/20 00/00 10/20 40/40 40/40 ...EASTERN IOWA... Decorah Ptcldy Ptcldy Sunny Sunny Sunny Ptcldy Mocldy 54/79 59/80 64/82 61/81 57/80 60/78 64/81 00/00 00/10 30/30 00/00 00/10 30/40 50/50 Oelwein Sunny Ptcldy Sunny Sunny Sunny Ptcldy Ptcldy 55/79 61/80 65/81 62/79 59/79 62/78 66/81 00/00 00/10 20/20 00/00 00/10 20/40 50/50 Waterloo Ptcldy Ptcldy Sunny Sunny Sunny Ptcldy Shwrs 56/80 62/81 66/82 62/81 60/81 63/80 66/83 00/00 00/10 20/20 00/00 00/10 30/40 50/50 Dubuque Sunny Ptcldy Sunny Sunny Sunny Ptcldy Mocldy 56/80 60/81 66/81 64/81 61/81 62/80 66/82 00/00 00/00 30/30 10/00 00/10 20/30 50/50 Cedar Rapids Ptcldy Ptcldy Sunny Sunny Sunny Ptcldy Ptcldy 56/81 62/83 66/83 64/82 61/83 64/82 67/84 00/00 00/10 20/20 10/00 00/10 20/40 50/50 Iowa City Ptcldy Ptcldy Sunny Sunny Sunny Ptcldy Ptcldy 56/81 62/83 67/85 64/83 62/84 65/83 68/85 00/00 00/00 20/20 10/00 00/10 20/30 50/50 Quad Cities Sunny Ptcldy Sunny Sunny Sunny Ptcldy Ptcldy 56/81 60/82 66/83 64/82 61/82 64/82 67/83 00/00 00/00 20/20 20/00 00/10 10/30 50/50 Ottumwa Ptcldy Sunny Sunny Sunny Sunny Ptcldy Shwrs 58/81 64/85 69/86 65/84 63/85 67/85 70/87 00/10 00/10 20/20 10/00 00/10 30/40 50/50 Burlington Sunny Ptcldy Sunny Sunny Sunny Ptcldy Ptcldy 57/80 60/82 66/85 65/82 62/82 64/83 68/84 00/00 00/00 10/10 10/00 00/00 20/20 40/40 Keokuk Ptcldy Ptcldy Sunny Sunny Sunny Ptcldy Ptcldy 58/81 62/83 68/87 65/83 63/83 66/83 69/86 00/00 00/00 10/20 10/00 00/10 20/20 40/40 $$