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State Forecast for Washington , IA
Change Zip Code: 
 
748
FPUS63 KDMX 070920
SFTIA
IAZ001>099-072200-
Tabular State Forecast for Iowa
National Weather Service Des Moines IA
420 AM CDT Mon Sep 7 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
Sep 07Sep 08Sep 09Sep 10Sep 11Sep 12Sep 13
...WESTERN IOWA...
Spencer
PtcldyMocldySunnySunnySunnySunnyPtcldy
/8367/8460/7850/8158/8456/7951/70
/3060/6070/1000/0000/2020/1030/50
Sioux City
PtcldyMocldySunnySunnyPtcldyPtcldyPtcldy
/8871/8563/7955/8363/8761/8157/72
/2060/6080/0000/0010/1010/1040/50
Carroll
PtcldyTstrmsPtcldySunnyPtcldySunnyTstrms
/8368/9066/8256/8261/8563/8258/75
/3030/6080/7000/0000/2030/2040/50
Atlantic
PtcldyTstrmsShwrsSunnySunnySunnyShwrs
/8470/9068/8059/8062/8464/8161/76
/3000/5090/9010/0000/2030/1040/50
Shenandoah
PtcldyPtcldyPtcldySunnySunnySunnyPtcldy
/8972/9569/8260/8262/8766/8463/80
/3000/4090/9020/0010/2040/2040/50
...CENTRAL IOWA...
Mason City
PtcldyTstrmsPtcldySunnyPtcldySunnyShwrs
/8064/8364/7854/7958/8259/7855/69
/2060/8080/5000/0000/2040/2030/50
Fort Dodge
PtcldyTstrmsPtcldySunnyPtcldySunnyTstrms
/8267/8666/8155/8159/8462/8158/72
/3050/7080/7010/0000/2030/2040/50
Ames
PtcldyTstrmsPtcldySunnyPtcldySunnyShwrs
/8266/9067/8259/8160/8563/8259/76
/3010/50100/10010/0000/2030/2030/50
Marshalltown
PtcldyShwrsShwrsSunnyPtcldySunnyShwrs
/8265/8869/8157/8058/8363/8159/75
/2010/50100/10010/0000/2040/3030/50
Des Moines
PtcldyPtcldyShwrsSunnySunnySunnyShwrs
/8370/9271/8262/8162/8667/8364/78
/3000/40100/10020/0000/2040/2030/50
Creston
PtcldyPtcldyShwrsSunnySunnySunnyShwrs
/8469/9369/8261/8161/8565/8362/78
/3000/4090/9030/0010/2040/2030/50
Lamoni
PtcldyPtcldyTstrmsSunnySunnySunnyShwrs
/8669/9471/8362/8161/8466/8463/80
/3000/2090/9040/0000/1050/3030/50
...EASTERN IOWA...
Decorah
PtcldyMocldyPtcldySunnyPtcldySunnyPtcldy
/7864/8068/7855/7758/8062/7857/70
/0010/7080/8000/0000/2040/4030/40
Oelwein
PtcldyPtcldyPtcldySunnyPtcldySunnyPtcldy
/7863/8367/7955/7657/8062/7858/73
/0010/5090/9010/0000/2040/4030/50
Waterloo
PtcldyShwrsShwrsSunnyPtcldySunnyShwrs
/8064/8668/8157/7958/8263/8058/74
/1020/60100/10020/0000/2040/3030/50
Dubuque
SunnyPtcldyPtcldySunnySunnySunnyPtcldy
/7963/8571/8259/7857/8264/8261/76
/0000/5090/9010/0000/1040/4030/40
Cedar Rapids
PtcldyPtcldyPtcldySunnySunnySunnyPtcldy
/8164/9071/8359/8058/8464/8361/78
/0000/3090/9010/0000/1050/4030/50
Iowa City
SunnyPtcldyPtcldySunnySunnySunnyPtcldy
/8264/9171/8461/8159/8565/8562/80
/0000/3090/9010/0000/1050/4030/40
Quad Cities
SunnyPtcldyMocldySunnySunnySunnyPtcldy
/8263/8972/8461/8058/8465/8563/80
/0000/1080/8010/0000/1040/4030/40
Ottumwa
PtcldyPtcldyShwrsSunnySunnySunnyPtcldy
/8467/9473/8562/8260/8766/8663/81
/0000/2080/8020/0000/1050/4030/40
Burlington
SunnyPtcldyMocldySunnySunnySunnyPtcldy
/8264/9172/8663/8158/8565/8663/82
/0000/0040/7020/1000/1040/4030/30
Keokuk
SunnyPtcldyMocldySunnySunnySunnyPtcldy
/8466/9374/8764/8260/8666/8765/84
/0000/1040/8040/1000/1040/4030/40
$$
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Bryce Anderson – DTN Meteorologist
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Hot and Dry for Central US Labor Day Weekend

Hot, humid conditions persist through the holiday weekend with scattered showers and thunderstorms likely. » More DTN Weather Commentary
Posted at 11:59AM Fri Sep 4, 2026 CDT
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