FPUS63 KDMX 220920 SFTIA IAZ001>099-222200- Tabular State Forecast for Iowa National Weather Service Des Moines IA 420 AM 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 Today Sun Mon Tue Wed Thu Fri Aug 22 Aug 23 Aug 24 Aug 25 Aug 26 Aug 27 Aug 28 ...WESTERN IOWA... Spencer Sunny Ptcldy Mocldy Ptcldy Sunny Sunny Ptcldy /80 51/79 57/77 59/83 60/82 56/81 58/82 /00 00/00 50/50 10/10 10/10 00/10 30/30 Sioux City Sunny Ptcldy Ptcldy Ptcldy Ptcldy Ptcldy Ptcldy /81 58/78 61/78 63/82 63/81 60/81 62/82 /00 00/00 60/60 10/10 20/20 10/10 40/40 Carroll Sunny Ptcldy Shwrs Ptcldy Ptcldy Sunny Ptcldy /82 57/80 61/78 62/84 65/83 62/82 63/83 /00 00/00 50/50 10/10 20/20 10/10 20/20 Atlantic Sunny Ptcldy Shwrs Ptcldy Ptcldy Sunny Ptcldy /81 59/79 62/78 63/82 65/82 62/81 63/82 /00 00/00 50/50 10/10 20/20 10/10 20/20 Shenandoah Sunny Ptcldy Ptcldy Ptcldy Ptcldy Ptcldy Ptcldy /85 63/82 65/83 66/86 67/86 65/85 67/86 /20 00/00 40/40 20/10 30/30 10/10 20/30 ...CENTRAL IOWA... Mason City Sunny Sunny Ptcldy Ptcldy Sunny Sunny Ptcldy /79 54/78 56/75 60/83 63/82 60/82 61/82 /00 00/00 10/30 10/10 20/20 00/00 20/20 Fort Dodge Sunny Ptcldy Mocldy Ptcldy Sunny Sunny Ptcldy /82 55/80 60/77 62/84 64/84 61/83 62/83 /00 00/00 40/40 10/10 20/20 00/00 20/20 Ames Sunny Sunny Ptcldy Ptcldy Sunny Sunny Ptcldy /82 58/80 61/77 63/83 65/84 63/83 64/84 /00 00/00 10/30 10/10 20/20 10/00 20/20 Marshalltown Sunny Sunny Ptcldy Ptcldy Sunny Sunny Ptcldy /81 56/79 57/76 60/82 64/83 61/82 61/83 /00 00/00 00/20 10/10 20/20 10/00 10/20 Des Moines Sunny Ptcldy Ptcldy Ptcldy Ptcldy Sunny Ptcldy /82 60/80 64/77 66/83 68/84 65/83 65/84 /10 00/00 20/40 00/10 20/20 10/00 10/20 Creston Sunny Ptcldy Ptcldy Ptcldy Ptcldy Sunny Ptcldy /83 61/81 63/80 65/84 67/84 65/83 65/85 /00 00/00 40/40 10/10 10/10 10/10 10/20 Lamoni Sunny Ptcldy Ptcldy Ptcldy Ptcldy Sunny Ptcldy /83 61/80 63/79 65/83 67/84 65/83 66/84 /10 00/00 30/30 10/10 10/20 10/10 10/20 ...EASTERN IOWA... Decorah Sunny Sunny Ptcldy Ptcldy Sunny Sunny Ptcldy /78 55/75 54/74 59/79 63/81 61/80 61/80 /00 00/00 00/10 10/20 30/30 10/00 10/10 Oelwein Sunny Sunny Ptcldy Ptcldy Sunny Sunny Ptcldy /78 56/75 56/74 60/79 64/81 61/79 61/80 /00 00/00 00/10 10/10 40/40 20/00 10/10 Waterloo Sunny Sunny Ptcldy Ptcldy Sunny Sunny Ptcldy /80 56/77 57/75 61/81 64/82 62/8162/82 /00 00/00 00/20 10/10 20/20 10/00 10/10 Dubuque Sunny Sunny Ptcldy Ptcldy Sunny Sunny Ptcldy /79 58/77 56/76 59/79 64/82 63/80 62/81 /00 00/00 00/00 00/10 30/30 20/00 10/10 Cedar Rapids Sunny Sunny Ptcldy Ptcldy Ptcldy Sunny Ptcldy /82 58/80 57/77 61/82 65/84 63/82 63/83 /00 00/00 00/10 00/10 20/20 10/00 10/20 Iowa City Sunny Sunny Ptcldy Ptcldy Sunny Sunny Ptcldy /82 59/80 58/78 62/82 66/84 64/83 64/83 /00 00/00 00/10 00/10 20/20 20/00 10/20 Quad Cities Sunny Sunny Ptcldy Ptcldy Ptcldy Sunny Ptcldy /81 59/78 57/77 61/80 65/83 64/81 63/82 /00 00/00 00/00 00/10 20/30 30/10 10/10 Ottumwa Sunny Ptcldy Ptcldy Ptcldy Ptcldy Sunny Ptcldy /83 60/81 61/78 64/83 67/85 65/84 64/84 /00 00/00 10/20 10/10 20/20 10/10 10/10 Burlington Sunny Sunny Ptcldy Ptcldy Ptcldy Sunny Ptcldy /81 59/79 59/77 62/80 65/83 64/82 63/82 /00 00/00 00/00 00/00 10/10 10/10 10/10 Keokuk Sunny Ptcldy Ptcldy Ptcldy Ptcldy Sunny Ptcldy /82 61/79 61/77 63/81 66/83 65/82 64/83 /00 00/00 00/10 10/00 10/20 20/20 10/10 $$