| NWS Forecast for: Lewis County Issued by: National Weather Service Saint Louis, MO Last Update: 228 PM CDT Wed Jul 8 2026 |  |
| This Afternoon: Sunny. Near steady temperature in the upper 80s. South winds around 5 mph. Tonight: Mostly clear in the evening, then becoming partly cloudy. Lows around 70. South winds around 5 mph. Thursday: Partly sunny with scattered showers. Isolated thunderstorms in the morning, then scattered thunderstorms in the afternoon. Highs in the upper 80s. Southwest winds around 5 mph. Chance of rain 50 percent. Thursday Night: Partly cloudy with scattered showers and thunderstorms in the evening, then mostly cloudy with isolated showers and thunderstorms after midnight. Lows in the lower 70s. West winds around 5 mph in the evening, becoming light and variable. Chance of rain 40 percent. Friday: Mostly cloudy with a chance of showers with a slight chance of thunderstorms in the morning, then partly sunny with showers and thunderstorms likely in the afternoon. Humid with highs in the mid 80s. Southeast winds around 5 mph. Chance of rain 70 percent. Friday Night: Showers and thunderstorms likely in the evening, then a chance of showers with a slight chance of thunderstorms after midnight. Lows in the upper 60s. Chance of rain 70 percent. Saturday: Mostly sunny with a chance of showers. A slight chance of thunderstorms in the morning, then a chance of thunderstorms in the afternoon. Highs in the mid 80s. Chance of rain 50 percent. Saturday Night: A slight chance of thunderstorms in the evening. Partly cloudy with a slight chance of showers. Lows in the upper 60s. Chance of rain 20 percent. Sunday: Sunny with a 20 percent chance of showers. Highs in the mid 80s. Sunday Night And Monday: Mostly clear. Lows in the upper 60s. Highs in the upper 80s. Monday Night: Clear. Lows in the upper 60s. Tuesday: Sunny. Highs around 90. | |
| Zone Forecast: Lewis County | |
Visit your local NWS office at: https://www.weather.gov/lsx/ |