10-Day Weather Forecast - Vandalia, IL

Mostly cloudy with a chance of flurries and sprinkles in the morning then mostly sunny in the afternoon. Much cooler with highs in the mid 30s. Temperature falling into the upper 20s in the afternoon. Northwest winds 15 to 20 mph with gusts up to 30 mph.

Clear. Much cooler with lows around 16. Northwest winds 10 to 15 mph with gusts up to 25 mph. Wind chill values as low as 4 above.

Sunny. Highs in the upper 20s. Northwest winds 5 to 10 mph becoming west in the afternoon. Wind chill values as low as 5 above in the morning.

Mostly cloudy with a 50 percent chance of snow. Lows in the lower 20s. Temperature rising to around 30 after midnight.

Mostly cloudy. Highs around 40. Lows 15 to 20. Wind chill values as low as 5 above.

Mostly cloudy. Highs around 40. Lows 15 to 20. Wind chill values as low as 5 above.

Partly sunny in the morning then becoming mostly cloudy. Much cooler with highs in the lower 20s. Wind chill values as low as zero.

Partly cloudy. Lows 5 to 10 above. Highs in the mid 20s. Wind chill values as low as 5 below.

Partly cloudy. Lows 5 to 10 above. Highs in the mid 20s. Wind chill values as low as 5 below.

Partly cloudy. Lows 10 to 15. Highs in the upper 20s. Wind chill values as low as zero.

Partly cloudy. Lows 10 to 15. Highs in the upper 20s. Wind chill values as low as zero.

Partly cloudy. Low temperature around 16F. Dew point will be around 9F with an average humidity of 65%. Winds will be 6 mph from the NW.

Sunny. High temperature around 31F. Dew point will be around 11F with an average humidity of 59%. Winds will be 2 mph from the SW.

Mostly clear. Low temperature around 24F. Dew point will be around 15F with an average humidity of 66%. Winds will be 6 mph from the S.

Partly cloudy. High temperature around 37F. Dew point will be around 24F with an average humidity of 68%. Winds will be 8 mph from the S.

Mostly cloudy with a slight chance of rain-snow mix. Chance of precipitation 25%. Low temperature around 31F. Dew point will be around 28F with an average humidity of 83%. Winds will be 4 mph from the S.

Cloudy with a chance of rain-snow mix. Chance of precipitation 35%. High temperature around 39F. Dew point will be around 32F with an average humidity of 81%. Winds will be 5 mph from the SE.

Cloudy with a chance of rain. Chance of precipitation 50%. Low temperature around 37F. Dew point will be around 35F with an average humidity of 88%. Winds will be 4 mph from the SE.