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 10.6° 6.3°
Average change in low temperature day-to-day 9.9° 8.5°
Precipitation Last Month Last Year
Chance of dry day after a precip day 100% 61%
Chance of precip day after a dry day 23% 21%
 
 

Weather forecast accuracy for Marshalltown, Iowa

Last Month
MeteoGroup   78.49%
Weather Underground   76.34%
Foreca   75.00%
WeatherBug   74.73%
The Weather Channel   74.19%
National Weather Service   72.04%
AccuWeather   66.67%
Dark Sky (forecast.io)   66.67%
CustomWeather   65.32%
Persistence   41.67%
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

10.8% of CustomWeather's low temperature forecasts for Marshalltown were exactly right last month.