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 4.7° 6.6°
Average change in low temperature day-to-day 6.2° 8.5°
Precipitation Last Month Last Year
Chance of dry day after a precip day 60% 61%
Chance of precip day after a dry day 21% 20%

Weather forecast accuracy for Marshalltown, Iowa

Last Month
The Weather Channel   77.88%
Weather Underground   77.88%
Foreca   76.28%
AccuWeather   75.64%
MeteoGroup   72.44%
NWS Digital Forecast   69.48%
World Weather Online   69.23%
Dark Sky (forecast.io)   65.06%
Persistence   50.69%
Last Year
Weather Underground   76.90%
The Weather Channel   76.82%
MeteoGroup   76.19%
Foreca   76.12%
AccuWeather   75.18%
NWS Digital Forecast   70.27%
Dark Sky (forecast.io)   68.01%
World Weather Online   63.99%
Persistence   45.91%

ForecastAdvisor Fact

7.0% of Dark Sky (forecast.io)'s high temperature forecasts for Marshalltown were off by more than 10 degrees last year.