 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. Lows dip down to about 61. Tonight, under partly cloudy skies, northerly winds at around 5 miles an hour. Cloudy skies with a few peaks of sun with fog and spots early tomorrow. Slight chance of thunderstorms. Daytime highs approaching 81. Currently, 70.