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 6.1° 6.3°
Average change in low temperature day-to-day 9.5° 8.5°
Precipitation Last Month Last Year
Chance of dry day after a precip day 57% 61%
Chance of precip day after a dry day 20% 21%

Weather forecast accuracy for Marshalltown, Iowa

Last Month
The Weather Channel   78.40%
Weather Underground   78.09%
MeteoGroup   77.16%
CustomWeather   75.00%
Foreca   74.07%
Dark Sky (forecast.io)   72.84%
National Weather Service   72.53%
AccuWeather   70.99%
WeatherBug   67.35%
Persistence   43.52%
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

It rained or snowed 30% of the time in Marshalltown last year when Persistence's text forecasts called for precipitation, and 24% of the time when they did not.