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 10.7° 6.3°
Average change in low temperature day-to-day 8.9° 7.7°
Precipitation Last Month Last Year
Chance of dry day after a precip day 67% 59%
Chance of precip day after a dry day 8% 24%

Weather forecast accuracy for Marshalltown, Iowa

Last Month
MeteoGroup   76.54%
Foreca   75.62%
Weather Underground   75.32%
The Weather Channel   75.00%
AccuWeather   74.38%
Dark Sky (forecast.io)   67.28%
NWS Digital Forecast   62.32%
World Weather Online   59.88%
Persistence   50.60%
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

11.1% of The Weather Channel's high temperature forecasts for Marshalltown were exactly right last month.