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 6.6° 6.3°
Average change in low temperature day-to-day 6.0° 7.7°
Precipitation Last Month Last Year
Chance of dry day after a precip day 55% 59%
Chance of precip day after a dry day 25% 24%

Weather forecast accuracy for Marshalltown, Iowa

Last Month
AccuWeather   78.57%
The Weather Channel   76.49%
Weather Underground   76.49%
MeteoGroup   76.49%
Foreca   73.51%
NWS Digital Forecast   73.15%
Dark Sky (forecast.io)   69.35%
World Weather Online   55.95%
Persistence   43.28%
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

On average, Weather Underground's low temperature forecasts for Marshalltown were off by 2.20 degrees last month.