Weather WorldLyon, MO 7-Day Night Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
Weather Quote O' the Day
Lyon, MO Weather Forecast
Lyon, MO Weather Forecast Date: 954 PM CST Tue Nov 03 2026
The area/counties/county of: Gasconade County Mo, including the cities of: Washington, Union, and Sullivan.or toggle through each period.
Tonight... Mostly cloudy. Rain likely with a slight chance of thunderstorms this evening, then a slight chance of very light drizzle after midnight. Much cooler with lows around 50. Southwest winds 5 to 10 mph with gusts up to 25 mph. Chance of rain 70%.
Wednesday... Mostly cloudy. Cooler with highs in the lower 60s. West winds 5 to 10 mph with gusts up to 20 mph.
Wednesday Night... Mostly clear. Cooler with lows around 40. West winds around 5 mph.
Thursday... Sunny. Highs in the mid 60s. West winds 5 to 10 mph.
Thursday Night... Mostly cloudy. A slight chance of rain and thunderstorms in the evening. Lows around 40. Northwest winds around 5 mph. Chance of rain 20%.
Friday... Mostly cloudy. Highs in the upper 50s. Lows in the mid 30s.
Saturday... Mostly cloudy. Highs in the upper 50s. Lows in the mid 30s.
Saturday Night... Partly cloudy in the evening, then clearing. Lows in the lower 30s.
Sunday... Mostly clear. Highs in the lower 60s. Lows in the lower 30s.
Sunday Night... Mostly clear. Highs in the lower 60s. Lows in the lower 30s.
Monday... Mostly clear. Highs in the upper 60s. Lows in the upper 30s.
POP = Probability of Precipitation
Lyon Radar Loop
Use the map search tool if you want to place a location marker on the radar map...