5-day weather forecast for Union, Iowa
Today
61°
80°
Partly Sunny
Wednesday
59°
79°
Slight Chance Thunderstorms
Thursday
63°
82°
Chance Thunderstorms
Friday
68°
85°
Chance Thunderstorms
Saturday
71°
88°
Chance Thunderstorms
Click on a forecast to see the forecast trend for that day
Weather changeability for Marshalltown, Iowa
Unfortunately, there was not enough data for this station to provide meaningful weather changeability data.
Weather forecast accuracy for Marshalltown, Iowa
| The Weather Channel | 67.28% |
| Intellicast | 67.28% |
| AccuWeather | 66.98% |
| NWS Digital Forecast | 66.36% |
| National Weather Service | 64.81% |
| Weather Underground | 63.14% |
| CustomWeather | 60.49% |
| World Weather Online | 55.45% |
| Persistence | 36.30% |
| Intellicast | 73.07% |
| The Weather Channel | 73.07% |
| National Weather Service | 69.97% |
| AccuWeather | 66.79% |
| NWS Digital Forecast | 66.45% |
| CustomWeather | 63.16% |
| Persistence | 46.12% |
ForecastAdvisor Fact
16.4% of Persistence's low temperature forecasts for Marshalltown were within 3 degrees of actual temperatures last month.