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Lyon, MO Weather Forecast
Lyon, MO Weather Forecast Date: 454 AM CST Wed Nov 04 2026
The area/counties/county of: Gasconade County Mo, including the cities of: Washington, Union, and Sullivan.or toggle through each period.
Today... Mostly cloudy. A slight chance of very light drizzle this morning. Cooler with highs around 60. West winds 5 to 10 mph with gusts up to 20 mph.
Tonight... 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... Partly cloudy in the evening, then becoming mostly cloudy. Lows in the lower 40s. Northwest winds around 5 mph.
Friday... Partly sunny. Highs in the upper 50s. North winds 5 to 10 mph.
Friday Night... Partly cloudy. Lows in the lower 30s. Highs in the mid 50s.
Saturday... Partly cloudy. Lows in the lower 30s. Highs in the mid 50s.
Sunday... Sunny. Highs in the lower 60s.
Sunday Night... Clear. Lows in the lower 30s. Highs in the upper 60s.
Monday... Clear. Lows in the lower 30s. Highs in the upper 60s.
Monday Night... Clear. Lows in the upper 30s.
POP = Probability of Precipitation
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