| NWS Forecast for: Madison County Issued by: National Weather Service Saint Louis, MO Last Update: 323 AM CDT Mon Aug 17 2026 |  |
| Today: Mostly sunny. Not as warm with highs in the mid 80s. North winds 5 to 10 mph. Tonight: Partly cloudy. Patchy fog after midnight. Lows in the lower 60s. North winds around 5 mph. Tuesday: Patchy fog in the morning. Sunny. Highs around 90. South winds around 5 mph. Tuesday Night: Mostly clear in the evening, then partly cloudy with a chance of showers and thunderstorms after midnight. Lows in the upper 60s. South winds around 5 mph. Chance of rain 50 percent. Wednesday: Mostly sunny with a chance of thunderstorms. Showers likely, mainly in the morning. Highs around 90. East winds around 5 mph, becoming south in the afternoon. Chance of rain 60 percent. Heat index values up to 101 in the afternoon. Wednesday Night And Thursday: Showers likely with a chance of thunderstorms. Lows in the upper 60s. Highs in the lower 80s. Chance of rain 70 percent. Thursday Night: Mostly cloudy with a chance of showers and thunderstorms in the evening, then partly cloudy with a slight chance of showers and thunderstorms after midnight. Lows in the mid 60s. Chance of rain 50 percent. Friday: Mostly sunny. Highs in the mid 80s. Friday Night Through Sunday: Mostly clear. Lows in the mid 60s. Highs in the mid 80s. | |
| Zone Forecast: Madison County | |
Visit your local NWS office at: https://www.weather.gov/lsx/ |