| NWS Forecast for: Montgomery County Issued by: National Weather Service Saint Louis, MO Last Update: 127 AM CDT Fri Sep 18 2026 | |
Rest Of Tonight: Mostly clear. Lows in the lower 70s. Northeast winds around 5 mph. Friday: Mostly sunny. A slight chance of showers and thunderstorms in the afternoon. Humid with highs in the lower 90s. East winds around 5 mph. Chance of rain 20 percent. Heat index values up to 106. Friday Night: Partly cloudy. A slight chance of showers and thunderstorms in the evening. Humid with lows around 70. Southeast winds around 5 mph. Chance of rain 20 percent. Heat index values up to 102 early in the evening. Saturday: Partly sunny. Highs in the lower 90s. Southwest winds 5 to 10 mph. Saturday Night: Partly cloudy. A slight chance of showers and thunderstorms after midnight. Lows in the upper 60s. Southwest winds around 5 mph. Chance of rain 20 percent. Sunday: Partly sunny with a chance of showers. A slight chance of thunderstorms in the afternoon. Highs in the upper 80s. Chance of rain 40 percent. Sunday Night And Monday: Showers likely with a chance of thunderstorms. Lows in the lower 60s. Highs in the mid 70s. Chance of rain 70 percent. Monday Night: Mostly cloudy. A chance of showers with a slight chance of thunderstorms in the evening, then a slight chance of showers after midnight. Lows in the upper 50s. Chance of rain 50 percent. Tuesday And Tuesday Night: Mostly cloudy. Highs in the upper 60s. Lows in the lower 50s. Wednesday Through Thursday: Partly cloudy. Highs in the mid 70s. Lows in the lower 50s. | |
| Zone Forecast: Montgomery County | |
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