5-day weather forecast for Sully, Iowa

Weather changeability for Marshalltown, Iowa

Unfortunately, there was not enough data for this station to provide meaningful weather changeability data.

Weather forecast accuracy for Marshalltown, Iowa

Last Month
Dark Sky (forecast.io)   83.23%
NWS Digital Forecast   81.15%
AccuWeather   77.98%
The Weather Channel   77.38%
Weather Underground   77.08%
MeteoGroup   75.00%
Foreca   73.51%
Persistence   66.67%
World Weather Online   62.18%
Last Year
Weather Underground   76.90%
The Weather Channel   76.82%
MeteoGroup   76.19%
Foreca   76.12%
AccuWeather   75.18%
NWS Digital Forecast   70.27%
Dark Sky (forecast.io)   68.01%
World Weather Online   63.99%
Persistence   45.91%

ForecastAdvisor Fact

It rained or snowed 67% of the time in Marshalltown last year when World Weather Online's text forecasts called for precipitation, and 16% of the time when they did not.