 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. A heat advisory remains in effect. Lows dip down to about 75. Tonight, under mainly clear skies, winds out of the southwest 5 to 10 miles an hour. A blend of clouds and sun tomorrow. Slight chance of thunderstorms. Daytime highs approaching 97. Currently, 93.