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State Forecast for Washington , IA
Change Zip Code: 
 
978
FPUS63 KDMX 240920
SFTIA
IAZ001>099-242200-
Tabular State Forecast for Iowa
National Weather Service Des Moines IA
420 AM CDT Mon Aug 24 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
 
FCSTFCSTFCSTFCSTFCSTFCSTFCST
TodayTueWedThuFriSatSun
Aug 24Aug 25Aug 26Aug 27Aug 28Aug 29Aug 30
...WESTERN IOWA...
Spencer
PtcldyPtcldySunnySunnyPtcldyPtcldyPtcldy
/7860/8460/8254/8254/8261/8364/84
/4000/2010/0000/0000/3060/6040/40
Sioux City
PtcldyPtcldySunnySunnyPtcldyPtcldyPtcldy
/7963/8462/8257/8259/8264/8566/85
/4000/2010/0000/0020/3060/6030/30
Carroll
PtcldyPtcldySunnySunnyPtcldyTstrmsPtcldy
/7963/8464/8460/8359/8364/8668/87
/2000/2010/1000/0010/2050/5040/40
Atlantic
PtcldyPtcldySunnySunnyPtcldyPtcldyPtcldy
/7764/8165/8161/8161/8266/8569/85
/2000/2020/1000/0010/1040/4030/30
Shenandoah
PtcldyPtcldySunnySunnyPtcldyPtcldyPtcldy
/8266/8566/8662/8564/8669/8973/90
/3000/1030/3000/0010/2040/4020/20
...CENTRAL IOWA...
Mason City
PtcldyPtcldySunnySunnySunnyShwrsShwrs
/8062/8463/8159/8156/8262/8365/84
/2000/1020/0000/0000/1060/6050/50
Fort Dodge
PtcldyPtcldySunnySunnyPtcldyTstrmsPtcldy
/7964/8464/8460/8358/8363/8467/86
/2000/2020/0000/0000/2060/6040/40
Ames
PtcldyPtcldySunnySunnySunnyTstrmsPtcldy
/7964/8366/8462/8261/8365/8568/86
/2000/1010/1000/0000/1050/5040/40
Marshalltown
PtcldyPtcldySunnySunnySunnyTstrmsShwrs
/7962/8265/8261/8159/8263/8367/85
/1000/1020/1000/0000/1050/5050/50
Des Moines
PtcldyPtcldySunnySunnySunnyTstrmsPtcldy
/8066/8568/8465/8363/8568/8671/87
/1000/1020/2000/0000/1040/5040/40
Creston
PtcldyPtcldySunnySunnyPtcldyPtcldyPtcldy
/8065/8467/8363/8263/8468/8771/88
/1000/1020/2000/0000/1040/4030/30
Lamoni
PtcldyPtcldySunnySunnyPtcldyMocldyPtcldy
/7964/8467/8564/8463/8568/8771/88
/1000/1040/4000/0000/1030/4030/30
...EASTERN IOWA...
Decorah
PtcldyPtcldySunnySunnySunnyMocldyPtcldy
/7960/8064/8161/8157/8062/8064/81
/0000/2030/1000/0000/1040/5050/50
Oelwein
PtcldyPtcldySunnySunnySunnyMocldyPtcldy
/7861/7964/8061/7958/7963/8066/81
/1000/0030/3000/0000/1040/4050/50
Waterloo
PtcldyPtcldySunnySunnySunnyShwrsShwrs
/7961/8165/8261/8159/8063/8266/83
/2000/1020/2000/0000/1050/5050/50
Dubuque
SunnyPtcldySunnySunnySunnyMocldyPtcldy
/7959/8065/8162/8059/8062/8166/82
/0000/0040/4010/0000/0020/3050/50
Cedar Rapids
PtcldyPtcldySunnySunnySunnyMocldyPtcldy
/8161/8265/8363/8260/8364/8467/85
/0000/0040/4000/0000/1030/3050/50
Iowa City
SunnyPtcldySunnySunnySunnyMocldyPtcldy
/8161/8266/8464/8361/8365/8468/86
/0000/0040/4000/0000/1020/3050/50
Quad Cities
SunnyPtcldySunnySunnySunnyPtcldyPtcldy
/8060/8166/8364/8261/8264/8368/84
/0000/0030/3010/0000/0020/3050/50
Ottumwa
PtcldyPtcldySunnySunnySunnyPtcldyShwrs
/8163/8468/8664/8462/8567/8670/88
/1000/0040/4000/0000/0030/3050/50
Burlington
SunnyPtcldySunnySunnySunnyMocldyPtcldy
/7959/8265/8463/8261/8264/8468/85
/0000/0020/2010/0000/0010/2040/40
Keokuk
SunnyPtcldySunnySunnySunnyMocldyPtcldy
/7962/8267/8565/8262/8366/8570/87
/0000/0020/2000/0000/0010/2040/40
$$
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DTN Weather Summary

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Bryce Anderson – DTN Meteorologist
Bio
Storms Targeting Central, Southeast US Monday

Showers, thunderstorms for Northern, Central Plains and from Gulf to coastal Carolinas. Severe weather possible. » More DTN Weather Commentary
Posted at 5:34AM Mon Aug 24, 2026 CDT
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