| NWS Forecast for: Montgomery County Issued by: National Weather Service Saint Louis, MO Last Update: 152 AM CDT Mon Aug 10 2026 | |
Rest Of Tonight: Mostly clear. Lows in the mid 70s. South winds 5 to 10 mph with gusts up to 20 mph. Monday: Mostly sunny. A slight chance of showers and thunderstorms in the morning. Humid with highs in the mid 90s. Southwest winds 5 to 10 mph with gusts up to 20 mph. Chance of rain 20 percent. Heat index values up to 107 in the afternoon. Monday Night: Mostly clear. Lows in the mid 70s. Southwest winds around 5 mph. Heat index values up to 105 early in the evening. Tuesday: Sunny, hot with highs in the mid 90s. Southwest winds 5 to 10 mph with gusts up to 20 mph. Heat index values up to 109 in the afternoon. Tuesday Night: Partly cloudy. Lows in the mid 70s. Southwest winds around 5 mph. Heat index values up to 109 early in the evening. Wednesday: Mostly sunny. A slight chance of showers and thunderstorms in the morning. Highs in the mid 90s. Chance of rain 20 percent. Heat index values up to 110. Wednesday Night: Partly cloudy. A slight chance of showers and thunderstorms in the evening, then a chance of showers and thunderstorms after midnight. Lows in the lower 70s. Chance of rain 50 percent. Heat index values up to 110 early in the evening. Thursday: Mostly sunny with a slight chance of thunderstorms. A chance of showers, mainly in the morning. Highs around 90. Chance of rain 50 percent. Heat index values up to 105 in the afternoon. Thursday Night: Partly cloudy with a chance of showers and thunderstorms in the evening, then mostly cloudy with a chance of showers with a slight chance of thunderstorms after midnight. Lows around 70. Chance of rain 50 percent. Heat index values up to 100 early in the evening. Friday: Partly sunny with a slight chance of showers and thunderstorms. Highs in the upper 80s. Chance of rain 20 percent. Friday Night Through Sunday: Partly cloudy with a slight chance of showers and thunderstorms. Lows in the lower 70s. Highs in the upper 80s. Chance of rain 20 percent. Heat index values up to 100. | |
| Zone Forecast: Montgomery County | |
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