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State Forecast for Washington , IA
Change Zip Code: 
 
049
FPUS63 KDMX 310921
SFTIA
IAZ001>099-312200-
Tabular State Forecast for Iowa
National Weather Service Des Moines IA
420 AM CDT Mon Aug 31 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 31Sep 01Sep 02Sep 03Sep 04Sep 05Sep 06
...WESTERN IOWA...
Spencer
PtcldyPtcldyPtcldyPtcldyPtcldyPtcldyPtcldy
/8765/8764/8666/8866/9067/8966/86
/1010/1060/6060/6020/2020/2030/30
Sioux City
PtcldyPtcldySunnySunnyPtcldyPtcldyPtcldy
/9068/8967/8969/9170/9171/9070/88
/1010/1050/4050/5020/2010/1020/20
Carroll
PtcldyPtcldyPtcldySunnyPtcldyPtcldyPtcldy
/9271/9273/9172/9270/9170/9170/88
/2020/2010/1040/4020/2020/2020/20
Atlantic
PtcldySunnySunnySunnyPtcldyPtcldyPtcldy
/9272/9375/9474/9373/9073/9171/88
/2020/1000/0030/3020/2010/1010/20
Shenandoah
PtcldyPtcldySunnySunnySunnyPtcldyPtcldy
/9476/9579/9578/9575/9274/9373/91
/1000/0000/0020/2010/2010/1010/10
...CENTRAL IOWA...
Mason City
PtcldyPtcldyPtcldyTstrmsPtcldyPtcldyPtcldy
/8868/8768/8768/8667/8868/8867/85
/2010/1050/5060/6030/3020/2030/30
Fort Dodge
PtcldyPtcldyPtcldyTstrmsPtcldyPtcldyPtcldy
/9170/9070/9070/9069/9069/9069/87
/2010/1020/2060/6020/2020/2020/20
Ames
PtcldyPtcldyPtcldyTstrmsPtcldyPtcldyPtcldy
/9272/9374/9373/9273/9171/9171/88
/2020/2010/1040/5020/2020/2020/20
Marshalltown
PtcldyPtcldySunnyTstrmsPtcldyPtcldyPtcldy
/9172/9273/9271/9070/8969/8968/87
/2020/2010/1030/5020/2020/2020/30
Des Moines
PtcldyPtcldySunnySunnySunnyPtcldyPtcldy
/9475/9577/9575/9374/9273/9172/89
/2020/1000/1020/4010/1020/2010/20
Creston
PtcldyPtcldySunnySunnySunnyPtcldyPtcldy
/9475/9578/9476/9473/9273/9272/89
/2010/1000/0020/2010/1010/1010/20
Lamoni
PtcldySunnySunnySunnySunnySunnyPtcldy
/9576/9477/9577/9475/9274/9172/89
/1010/0000/0010/2010/1010/1010/20
...EASTERN IOWA...
Decorah
PtcldyPtcldyPtcldyPtcldyPtcldyPtcldyPtcldy
/9069/8869/8768/8468/8668/8667/83
/1010/1050/5060/6020/2020/2020/30
Oelwein
PtcldyPtcldyPtcldyPtcldyPtcldyPtcldyPtcldy
/8971/8871/8870/8570/8769/8668/83
/2010/2020/1050/5020/2020/2020/30
Waterloo
PtcldyPtcldyPtcldyTstrmsPtcldyPtcldyPtcldy
/9072/9072/8971/8770/8870/8869/86
/2010/1010/1050/5020/2020/2020/30
Dubuque
PtcldyPtcldySunnyPtcldyPtcldyPtcldyPtcldy
/8873/8873/8971/8670/8770/8668/84
/2010/2010/0050/5020/3020/2010/20
Cedar Rapids
PtcldyPtcldySunnyPtcldySunnyPtcldyPtcldy
/9173/9274/9272/8972/8870/8969/86
/2020/2000/0020/4020/2020/2010/20
Iowa City
PtcldySunnySunnyPtcldySunnyPtcldyPtcldy
/9274/9375/9473/9072/8971/8970/87
/2010/1000/1020/4020/2020/2010/20
Quad Cities
PtcldySunnySunnyPtcldySunnyPtcldySunny
/9175/9275/9374/8972/8970/8969/86
/1010/1000/0020/3020/2020/2010/20
Ottumwa
PtcldySunnySunnyPtcldySunnyPtcldyPtcldy
/9577/9578/9676/9375/9273/9172/88
/1010/1000/0010/3010/1020/2010/30
Burlington
PtcldySunnySunnySunnySunnySunnyPtcldy
/9475/9475/9575/9173/9071/8970/86
/1000/1000/0010/2020/2020/2020/10
Keokuk
PtcldySunnySunnySunnySunnyPtcldyPtcldy
/9576/9577/9677/9374/9173/9071/87
/1000/0000/0000/2020/2020/2020/10
$$
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DTN Weather Summary

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Bryce Anderson – DTN Meteorologist
Bio
Summer Ending Hot for Much of the Country

Extreme temperatures for Southern Plains, southwestern Corn Belt. Showers, thunderstorms possible north. » More DTN Weather Commentary
Posted at 5:36AM Mon Aug 31, 2026 CDT
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