 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. Slight chance of thunderstorms. Tonight, otherwise cloudy skies expected. Lows level off around 64. Southerly winds 5 to 10 miles an hour. Overcast skies tomorrow. Chance of thunderstorms. Highs level off around 84. Right now, 82.