| NWS Forecast for: Knox County Issued by: National Weather Service Saint Louis, MO Last Update: 828 AM CDT Sun Jul 12 2026 | |
| Today: Sunny. Highs in the mid 80s. Northeast winds 5 to 10 mph. Tonight: Clear. Lows in the mid 60s. Northeast winds around 5 mph in the evening, becoming light and variable. Monday: Sunny. Highs in the upper 80s. Northeast winds around 5 mph. Monday Night: Clear. Lows in the upper 60s. East winds around 5 mph in the evening, becoming light and variable. Tuesday: Sunny. Highs around 90. Northeast winds around 5 mph. Tuesday Night: Clear. Lows in the lower 70s. Wednesday Through Saturday: Mostly clear. Highs in the lower 90s. Lows in the mid 70s. Heat index values up to 100. | |
| Zone Forecast: Knox County | |
Visit your local NWS office at: https://www.weather.gov/lsx/ |