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
MeteoGroup   76.54%
The Weather Channel   75.62%
Weather Underground   74.38%
Foreca   73.77%
AccuWeather   73.15%
CustomWeather   71.30%
National Weather Service   70.37%
WeatherBug   66.67%
Dark Sky (forecast.io)   57.41%
Persistence   19.79%
Last Year
Weather Underground   75.16%
The Weather Channel   74.91%
MeteoGroup   74.46%
National Weather Service   70.86%
Foreca   70.49%
WeatherBug   70.43%
AccuWeather   68.87%
CustomWeather   65.65%
Persistence   44.78%
 

ForecastAdvisor Fact

9.9% of MeteoGroup's high temperature forecasts for Marshalltown were exactly right last month.