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 4.4° 6.3°
Average change in low temperature day-to-day 4.2° 8.5°
Precipitation Last Month Last Year
Chance of dry day after a precip day 38% 61%
Chance of precip day after a dry day 31% 21%
 
 

Weather forecast accuracy for Marshalltown, Iowa

Last Month
The Weather Channel   76.39%
Weather Underground   75.86%
National Weather Service   72.78%
MeteoGroup   70.98%
Dark Sky (forecast.io)   69.44%
WeatherBug   69.38%
Foreca   67.22%
CustomWeather   67.22%
AccuWeather   66.39%
Persistence   53.03%
Last Year
MeteoGroup   75.51%
The Weather Channel   74.73%
WeatherBug   73.32%
National Weather Service   73.12%
AccuWeather   70.42%
Foreca   70.30%
Weather Underground   68.48%
CustomWeather   68.35%
Persistence   44.94%
 

ForecastAdvisor Fact

0.0% of AccuWeather's low temperature forecasts for Marshalltown were off by more than 10 degrees last month.