 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. Mainly cloudy tonight with a slight chance of severe storms. Lows around 71. Winds out of the northwest 5 to 10 miles an hour. Sunshine mixed with clouds at times tomorrow. Slight chance of thunderstorms. Highs level off around 86. Currently, it's 73 degrees.