 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. Clothes level off around 63. Tonight, under mainly clear skies, easterly winds at around 5 miles an hour. High temperatures reach up to 87. Tomorrow, sunshine mixed with clouds at times. Partly cloudy skies tomorrow night, 70. Right now, 81.