10-Day Weather Forecast - Saint Peters, MO

Mostly cloudy in the morning then becoming mostly sunny. Blustery and much cooler with highs in the upper 20s. Northwest winds 15 to 25 mph. Gusts up to 40 mph in the morning. Wind chill values as low as 3 below in the morning.

Partly cloudy in the evening then clearing. Lows around 18. Northwest winds 10 to 15 mph with gusts up to 25 mph.

Sunny. Highs in the mid 30s. West winds 5 to 10 mph.

Mostly clear. Lows in the upper 20s. West winds 5 to 10 mph.

Partly cloudy. Highs in the lower 40s. Lows in the mid 20s.

Partly cloudy. Highs in the lower 40s. Lows in the mid 20s.

Partly cloudy. Highs in the lower 40s. Lows in the mid 20s.

Partly cloudy. Highs in the lower 40s. Lows in the mid 20s.

Mostly cloudy. Highs in the lower 40s. Lows in the upper 20s.

Mostly cloudy. Highs in the lower 40s. Lows in the upper 20s.

Partly cloudy. Highs in the lower 40s. Lows in the mid 20s.

Partly cloudy. Highs in the lower 40s. Lows in the mid 20s.

Partly cloudy. Highs in the lower 40s. Lows in the mid 20s.

Partly cloudy. Low temperature around 31F. Dew point will be around 25F with an average humidity of 73%. Winds will be 4 mph from the SE.

Partly cloudy. High temperature around 43F. Dew point will be around 30F with an average humidity of 68%. Winds will be 3 mph from the SE.

Partly cloudy. Low temperature around 32F. Dew point will be around 29F with an average humidity of 78%. Winds will be 2 mph from the SE.

Partly cloudy. High temperature around 44F. Dew point will be around 31F with an average humidity of 71%. Winds will be 3 mph from the S.

Partly cloudy. Low temperature around 30F. Dew point will be around 30F with an average humidity of 83%. Winds will be 1 mph from the S.