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 4.3° 6.6°
Average change in low temperature day-to-day 4.8° 8.5°
Precipitation Last Month Last Year
Chance of dry day after a precip day 45% 61%
Chance of precip day after a dry day 22% 20%

Weather forecast accuracy for Marshalltown, Iowa

Last Month
Weather Underground   74.71%
AccuWeather   74.44%
MeteoGroup   74.17%
Foreca   74.17%
The Weather Channel   73.89%
Dark Sky (forecast.io)   66.94%
NWS Digital Forecast   66.11%
World Weather Online   64.63%
Persistence   46.66%
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

68.9% of Weather Underground's low temperature forecasts for Marshalltown were within 3 degrees of actual temperatures last year.