Tabular State Forecast
Issued by NWS
Issued by NWS
880
FPUS63 KDMX 180920
SFTIA
IAZ001>099-182200-
Tabular State Forecast for Iowa
National Weather Service Des Moines IA
420 AM CDT Tue Aug 18 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 Wed Thu Fri Sat Sun Mon
Aug 18 Aug 19 Aug 20 Aug 21 Aug 22 Aug 23 Aug 24
...WESTERN IOWA...
Spencer
Ptcldy Ptcldy Sunny Sunny Sunny Ptcldy Ptcldy
/79 56/78 55/80 59/82 58/78 56/77 58/79
/50 20/20 20/20 30/30 20/10 10/10 20/20
Sioux City
Ptcldy Ptcldy Sunny Sunny Sunny Ptcldy Ptcldy
/79 61/78 59/80 62/83 61/79 60/78 62/79
/50 10/20 20/20 30/10 10/10 20/20 20/20
Carroll
Tstrms Ptcldy Sunny Sunny Sunny Ptcldy Ptcldy
/80 62/78 59/80 63/84 63/79 60/78 61/79
/60 20/20 20/10 20/20 20/20 20/20 20/20
Atlantic
Tstrms Ptcldy Sunny Sunny Sunny Ptcldy Ptcldy
/78 64/78 61/79 64/82 64/80 62/77 63/79
/60 20/20 20/10 20/20 20/20 20/20 20/20
Shenandoah
Ptcldy Ptcldy Sunny Sunny Sunny Ptcldy Ptcldy
/83 67/81 64/83 66/86 67/84 65/83 66/84
/60 30/10 20/10 10/10 20/20 20/20 30/30
...CENTRAL IOWA...
Mason City
Ptcldy Ptcldy Sunny Shwrs Sunny Ptcldy Ptcldy
/77 58/77 57/79 61/81 60/77 57/76 59/77
/40 40/00 10/20 50/50 30/10 10/10 20/20
Fort Dodge
Tstrms Ptcldy Sunny Sunny Sunny Ptcldy Ptcldy
/80 61/79 59/80 63/83 62/79 59/78 61/79
/50 20/20 20/20 40/40 30/10 10/20 20/20
Ames
Ptcldy Ptcldy Sunny Sunny Sunny Ptcldy Ptcldy
/79 64/79 61/80 64/83 64/79 61/78 62/79
/40 30/10 20/10 20/20 30/30 10/20 20/20
Marshalltown
Ptcldy Ptcldy Sunny Ptcldy Sunny Ptcldy Ptcldy
/79 61/78 58/79 61/81 62/78 58/77 60/78
/40 30/00 10/00 20/20 20/20 10/20 20/20
Des Moines
Tstrms Ptcldy Sunny Sunny Sunny Ptcldy Ptcldy
/79 66/79 63/80 66/83 66/80 63/78 65/80
/50 30/10 20/10 20/20 30/30 10/20 20/20
Creston
Tstrms Ptcldy Sunny Sunny Sunny Ptcldy Ptcldy
/80 65/79 63/80 65/84 66/81 63/79 64/81
/50 30/10 20/00 10/20 20/20 20/20 20/20
Lamoni
Shwrs Ptcldy Sunny Sunny Sunny Ptcldy Ptcldy
/80 66/79 63/80 64/83 66/81 63/79 65/81
/50 50/20 20/00 10/20 20/20 10/20 30/30
...EASTERN IOWA...
Decorah
Ptcldy Ptcldy Sunny Ptcldy Sunny Ptcldy Ptcldy
/77 59/77 57/78 61/80 61/77 57/75 59/77
/40 30/00 10/10 40/40 30/10 00/10 10/10
Oelwein
Ptcldy Ptcldy Sunny Ptcldy Sunny Ptcldy Ptcldy
/77 61/76 58/77 62/79 62/75 59/74 60/75
/50 30/00 10/10 40/40 30/20 10/10 10/10
Waterloo
Ptcldy Ptcldy Sunny Ptcldy Sunny Ptcldy Ptcldy
/78 62/77 59/78 63/81 63/77 59/76 61/77
/40 30/00 10/10 30/30 30/20 10/10 20/20
Dubuque
Ptcldy Ptcldy Sunny Ptcldy Sunny Ptcldy Ptcldy
/79 63/78 59/79 62/80 64/78 60/76 61/77
/50 40/00 10/10 30/40 40/30 10/10 10/10
Cedar Rapids
Ptcldy Ptcldy Sunny Ptcldy Sunny Ptcldy Ptcldy
/80 64/79 60/80 62/81 64/79 60/78 61/79
/40 40/00 10/00 20/30 30/30 10/10 20/20
Iowa City
Ptcldy Ptcldy Sunny Sunny Sunny Ptcldy Ptcldy
/80 65/79 61/80 63/82 65/80 61/78 63/79
/40 40/00 10/00 20/30 30/30 10/10 20/20
Quad Cities
Ptcldy Ptcldy Sunny Ptcldy Sunny Ptcldy Ptcldy
/80 65/79 60/79 62/80 64/79 61/76 62/77
/40 40/10 10/00 20/40 40/40 10/10 10/10
Ottumwa
Tstrms Ptcldy Sunny Sunny Sunny Ptcldy Ptcldy
/81 66/80 62/80 64/83 66/81 62/79 64/80
/50 40/10 10/10 10/20 30/30 10/10 20/20
Burlington
Ptcldy Ptcldy Sunny Sunny Sunny Ptcldy Ptcldy
/81 66/79 62/79 62/81 65/80 61/78 62/78
/30 50/10 10/10 10/20 30/30 10/10 20/20
Keokuk
Ptcldy Ptcldy Sunny Sunny Sunny Ptcldy Ptcldy
/81 67/78 64/78 64/81 66/80 63/78 64/78
/20 70/50 10/10 10/10 20/20 00/10 20/20
$$