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Vandalia, IL Weather Forecast
Vandalia, IL Weather Forecast Date: 519 PM CDT Fri Oct 23 2026
The area/counties/county of: Montgomery County Il, including the cities of: Litchfield and Vandalia.or toggle through each period.
Tonight... Mostly clear. Lows in the mid 40s. Southeast winds around 5 mph.
Saturday... Mostly sunny. Highs in the mid 70s. Southeast winds around 5 mph.
Saturday Night... Partly cloudy. Lows in the upper 40s. Southeast winds around 5 mph.
Sunday... Mostly sunny. Highs in the upper 70s. South winds around 5 mph.
Sunday Night... Mostly cloudy. Lows in the upper 40s. Light and variable winds.
Monday... Partly sunny. Highs in the upper 70s.
Monday Night... Partly cloudy in the evening, then becoming mostly cloudy. Lows in the upper 40s.
Tuesday... Mostly cloudy. Highs in the mid 70s. Lows in the upper 40s.
Tuesday Night... Mostly cloudy. Highs in the mid 70s. Lows in the upper 40s.
Wednesday... Mostly sunny. Highs in the mid 70s.
Wednesday Night... Mostly clear. Lows in the lower 50s.
Thursday... Partly cloudy. Highs in the lower 70s. Lows in the mid 40s.
POP = Probability of Precipitation
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