10-Day Weather Forecast - Saint Peters, MO

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  • 38|34°F
    Mostly Cloudy
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    Today

    38°F

    Mostly cloudy. Highs around 40. South winds 5 to 10 mph.

    Tonight

    34°F

    Mostly cloudy in the evening then becoming partly cloudy. Not as cool with lows in the upper 20s. West winds 5 to 10 mph.

    Hourly details
  • Day

    46°F

    Mostly sunny. Highs in the upper 40s. West winds 10 to 15 mph becoming northwest in the afternoon.

    Night

    29°F

    Partly cloudy. Lows in the mid 20s. North winds 5 to 10 mph.

    Hourly details
  • Weekend Weather

  • Day

    39°F

    Mostly sunny. Cooler with highs in the upper 30s. Northeast winds around 5 mph becoming southeast in the afternoon.

    Night

    30°F

    Mostly cloudy. Lows in the upper 20s.

    Hourly details
  • Day

    53°F

    Mostly sunny. Not as cool with highs in the mid 50s.

    Night

    32°F

    Mostly clear. Lows in the lower 30s. Highs around 60.

    Hourly details
  • Day

    57°F

    Mostly clear. Lows in the lower 30s. Highs around 60.

    Night

    44°F

    Mostly clear. Not as cool with lows in the lower 40s.

    Hourly details
  • Day

    67°F

    Mostly sunny in the morning then becoming mostly cloudy. A 20 percent chance of rain. Highs in the mid 60s.

    Night

    44°F

    Mostly cloudy with a 40 percent chance of rain. Lows in the lower 40s. Highs in the mid 50s.

    Hourly details
  • Day

    53°F

    Mostly cloudy with a 40 percent chance of rain. Lows in the lower 40s. Highs in the mid 50s.

    Night

    40°F

    Mostly cloudy with a slight chance of rain. Chance of precipitation 25%. Low temperature around 40F. Dew point will be around 34F with an average humidity of 72%. Winds will be 4 mph from the NW.

  • Day

    54°F

    Cloudy with a chance of rain. Chance of precipitation 35%. High temperature around 54F. Dew point will be around 39F with an average humidity of 66%. Winds will be 3 mph from the N.

    Night

    41°F

    Cloudy with a chance of rain. Chance of precipitation 45%. Low temperature around 41F. Dew point will be around 37F with an average humidity of 72%. Winds will be 2 mph from the NE.

  • Day

    49°F

    Cloudy with a chance of rain. Chance of precipitation 40%. High temperature around 49F. Dew point will be around 37F with an average humidity of 71%. Winds will be 3 mph from the N.

    Night

    38°F

    Cloudy with a slight chance of rain. Chance of precipitation 30%. Low temperature around 38F. Dew point will be around 35F with an average humidity of 77%. Winds will be 3 mph from the N.

  • Weekend Weather

  • Day

    48°F

    Cloudy with a chance of rain. Chance of precipitation 35%. High temperature around 48F. Dew point will be around 36F with an average humidity of 70%. Winds will be 6 mph from the NW.

    Night

    35°F

    Mostly cloudy. Low temperature around 35F. Dew point will be around 32F with an average humidity of 73%. Winds will be 7 mph from the NW.