12-13-17 Iowa Forecast: Windy today, light wintry mix possible north this morning. N. By Chief Meteorologist Michael ClarkOn December 13, 2017 Today’s Iowa Video Forecast: Forecast precipitation over the next 18 hours: Wave of light moisture works through this morning, then a dry afternoon expected. Very gusty winds today! Gusts up to 45 mph through the day, decreasing towards the evening.