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 5.9° 6.3°
Average change in low temperature day-to-day 8.1° 7.7°
Precipitation Last Month Last Year
Chance of dry day after a precip day 83% 59%
Chance of precip day after a dry day 22% 24%

Weather forecast accuracy for Marshalltown, Iowa

Last Month
AccuWeather   75.86%
Foreca   75.86%
Weather Underground   75.29%
The Weather Channel   75.00%
MeteoGroup   71.26%
NWS Digital Forecast   69.64%
Dark Sky (forecast.io)   68.68%
World Weather Online   65.23%
Persistence   48.28%
Last Year
Weather Underground   75.34%
The Weather Channel   75.22%
Foreca   73.60%
AccuWeather   73.49%
MeteoGroup   73.44%
Dark Sky (forecast.io)   69.74%
NWS Digital Forecast   69.37%
World Weather Online   63.61%
Persistence   44.56%

ForecastAdvisor Fact

It rained or snowed 32% of the time in Marshalltown last year when Persistence's text forecasts called for precipitation, and 28% of the time when they did not.