 Now, from your 24-hour weather station, here's Southern Iowa's most accurate forecast on Ottumwa Radio. I'm meteorologist Megan Mulford with a look at your forecast. 61 tonight under mainly cloudy skies, north winds at around 5 miles an hour. Slight chance for storms. Tomorrow, 81. Mainly cloudy skies expected with fog early. Partly cloudy tomorrow night. Slight chance of thunderstorms, 62. Currently, 75.