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 8.9° 6.3°
Average change in low temperature day-to-day 11.8° 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 8% 21%
 
 

Weather forecast accuracy for Marshalltown, Iowa

Last Month
MeteoGroup   75.89%
Weather Underground   67.86%
The Weather Channel   66.96%
AccuWeather   65.77%
Foreca   65.43%
WeatherBug   63.69%
CustomWeather   61.61%
National Weather Service   61.42%
Dark Sky (forecast.io)   57.14%
Persistence   48.81%
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

4.5% of WeatherBug's high temperature forecasts for Marshalltown were off by more than 10 degrees last year.