National Weather Service Forecast for: Wentzville MO
Issued by: National Weather Service Saint Louis, MO
Updated: 10:36 am CST Nov 1, 2026
 
This
Afternoon
This Afternoon: Cloudy, with a high near 65. Southeast wind 7 to 9 mph.
Cloudy

 Tonight

Tonight: Patchy fog between 11pm and 4am. Otherwise, cloudy, with a low around 55. Southeast wind around 6 mph.
Patchy Fog

 Monday

Monday: Mostly cloudy, with a high near 71. South wind 6 to 14 mph, with gusts as high as 24 mph.
Mostly Cloudy

 Monday
Night
Monday Night: A 40 percent chance of rain after 1am. Cloudy, with a low around 62. South wind 13 to 16 mph, with gusts as high as 25 mph.
Cloudy then
Chance Rain
 Tuesday

Tuesday: Rain and possibly a thunderstorm before 9am, then rain between 9am and noon, then rain and possibly a thunderstorm after noon. High near 73. South wind 11 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 90%.
Rain

 Tuesday
Night
Tuesday Night: Rain likely and possibly a thunderstorm. Mostly cloudy, with a low around 50. Chance of precipitation is 60%.
Rain Likely
then Chance
Rain
 Wednesday

Wednesday: A 20 percent chance of rain. Partly sunny, with a high near 66.
Slight Chance
Rain
 Wednesday
Night
Wednesday Night: Partly cloudy, with a low around 45.
Partly Cloudy

 Thursday

Thursday: Partly sunny, with a high near 66.
Partly Sunny
Hi 65 °F Lo 55 °F Hi 71 °F Lo 62 °F Hi 73 °F Lo 50 °F Hi 66 °F Lo 45 °F Hi 66 °F

 

This Afternoon
 
 Cloudy, with a high near 65. Southeast wind 7 to 9 mph.
Tonight
 
 Patchy fog between 11pm and 4am. Otherwise, cloudy, with a low around 55. Southeast wind around 6 mph.
Monday
 
 Mostly cloudy, with a high near 71. South wind 6 to 14 mph, with gusts as high as 24 mph.
Monday Night
 
 A 40 percent chance of rain after 1am. Cloudy, with a low around 62. South wind 13 to 16 mph, with gusts as high as 25 mph.
Tuesday
 
 Rain and possibly a thunderstorm before 9am, then rain between 9am and noon, then rain and possibly a thunderstorm after noon. High near 73. South wind 11 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 90%.
Tuesday Night
 
 Rain likely and possibly a thunderstorm. Mostly cloudy, with a low around 50. Chance of precipitation is 60%.
Wednesday
 
 A 20 percent chance of rain. Partly sunny, with a high near 66.
Wednesday Night
 
 Partly cloudy, with a low around 45.
Thursday
 
 Partly sunny, with a high near 66.
Thursday Night
 
 A 20 percent chance of rain before midnight. Mostly cloudy, with a low around 45.
Friday
 
 Partly sunny, with a high near 65.
Friday Night
 
 Mostly cloudy, with a low around 42.
Saturday
 
 Mostly sunny, with a high near 66.

 

Forecast from NOAA-NWS for Wentzville MO.