10-Day Weather Forecast - Vandalia, IL

Sunny. Not as cool with highs in the upper 40s. Southwest winds 5 to 10 mph with gusts up to 20 mph.

Mostly clear in the evening then becoming partly cloudy. Lows in the lower 30s. Southwest winds 5 to 10 mph.

Mostly sunny in the morning then becoming mostly cloudy. Highs in the mid 50s. Southwest winds 10 to 15 mph with gusts up to 25 mph.

Mostly cloudy. A slight chance of rain in the evening. Lows in the mid 30s. West winds 10 to 15 mph. Chance of rain 20 percent.

Mostly cloudy. A slight chance of rain and snow in the afternoon. Breezy and much cooler with highs in the lower 40s. Temperature falling into the mid 30s in the afternoon. Chance of precipitation 20 percent.

Mostly cloudy in the evening then becoming partly cloudy. Much cooler with lows 15 to 20. Wind chill values as low as 5 above.

Mostly sunny. Cooler with highs in the lower 30s. Wind chill values as low as 5 above in the morning.

Mostly cloudy. Near steady temperature in the mid 20s.

Partly sunny in the morning then mostly cloudy with a slight chance of snow in the afternoon. Highs in the upper 30s. Chance of snow 20 percent.

Mostly cloudy. Lows in the lower 20s. Highs in the upper 20s.

Mostly cloudy. Lows in the lower 20s. Highs in the upper 20s.

Partly cloudy. Lows around 10 above. Highs in the upper 20s. Wind chill values as low as zero.

Partly cloudy. Lows around 10 above. Highs in the upper 20s. Wind chill values as low as zero.

Clear. Low temperature around 13F. Dew point will be around 4F with an average humidity of 61%. Winds will be 4 mph from the W.

Sunny. High temperature around 24F. Dew point will be around 8F with an average humidity of 57%. Winds will be 6 mph from the W.

Clear. Low temperature around 17F. Dew point will be around 9F with an average humidity of 66%. Winds will be 2 mph from the S.

Sunny. High temperature around 28F. Dew point will be around 13F with an average humidity of 61%. Winds will be 2 mph from the S.

Clear. Low temperature around 22F. Dew point will be around 16F with an average humidity of 72%. Winds will be 5 mph from the SE.