5-day weather forecast for Sully, Iowa

Weather changeability for Marshalltown, Iowa

Temperature Last Month Last Year
Average change in high temperature day-to-day 4.1° 7.2°
Average change in low temperature day-to-day 5.6° 8.3°
Precipitation Last Month Last Year
Chance of dry day after a precip day 56% 59%
Chance of precip day after a dry day 23% 21%
 
 

Weather forecast accuracy for Marshalltown, Iowa

Last Month
Foreca   79.84%
The Weather Channel   79.57%
Weather Underground   79.57%
MeteoGroup   79.30%
AccuWeather   77.50%
Dark Sky (forecast.io)   72.58%
NWS Digital Forecast   69.89%
Persistence   45.97%
Last Year
Weather Underground   75.16%
The Weather Channel   74.91%
MeteoGroup   74.46%
Foreca   70.49%
WeatherBug   70.43%
AccuWeather   68.87%
NWS Digital Forecast   67.36%
CustomWeather   65.65%
Persistence   44.78%
 

ForecastAdvisor Fact

66.5% of Foreca's low temperature forecasts for Marshalltown were within 3 degrees of actual temperatures last year.