5-day weather forecast for Union, Iowa

Weather changeability for Marshalltown, Iowa

Temperature Last Month Last Year
Average change in high temperature day-to-day 5.9° 7.2°
Average change in low temperature day-to-day 8.9° 8.3°
Precipitation Last Month Last Year
Chance of dry day after a precip day 60% 59%
Chance of precip day after a dry day 16% 21%

Weather forecast accuracy for Marshalltown, Iowa

Last Month
MeteoGroup   80.56%
Foreca   80.28%
AccuWeather   78.89%
Weather Underground   78.33%
The Weather Channel   78.06%
NWS Digital Forecast   77.62%
Dark Sky (forecast.io)   75.56%
Persistence   53.95%
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

11.4% of NWS Digital Forecast's high temperature forecasts for Marshalltown were exactly right last year.