Saint Charles, MO Weather - Tomorrow’s Forecast

Tuesday

Cold

High:
12°F

Sunny and cold, with a high near 12. Wind chill values as low as -15. Northwest wind 5 to 10 mph becoming light and variable in the afternoon.

Tuesday Night

Clouds increasing

Overnight low:
7°F

Increasing clouds, with a temperature falling to near 7 by 8pm, then rising to around 17 during the remainder of the night. Light south wind increasing to 5 to 10 mph in the evening. Winds could gust as high as 20 mph.