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 4.0° 6.3°
Average change in low temperature day-to-day 6.5° 8.5°
Precipitation Last Month Last Year
Chance of dry day after a precip day 63% 61%
Chance of precip day after a dry day 17% 21%
 
 

Weather forecast accuracy for Marshalltown, Iowa

Last Month
Weather Underground   83.60%
The Weather Channel   80.91%
National Weather Service   79.30%
WeatherBug   78.15%
MeteoGroup   77.15%
AccuWeather   76.88%
CustomWeather   73.39%
Dark Sky (forecast.io)   73.39%
Foreca   70.43%
Persistence   47.31%
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

4.3% of MeteoGroup's high temperature forecasts for Marshalltown were exactly right last month.