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 7.3° 6.6°
Average change in low temperature day-to-day 9.9° 8.5°
Precipitation Last Month Last Year
Chance of dry day after a precip day 33% 61%
Chance of precip day after a dry day 16% 20%

Weather forecast accuracy for Marshalltown, Iowa

Last Month
Dark Sky (forecast.io)   83.23%
NWS Digital Forecast   81.15%
AccuWeather   77.98%
The Weather Channel   77.38%
Weather Underground   77.08%
MeteoGroup   75.00%
Foreca   73.51%
World Weather Online   62.18%
Persistence   42.33%
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

4.4% of World Weather Online's low temperature forecasts for Marshalltown were exactly right last year.