National Weather Service Forecast for: Saint Peters MO
Issued by: National Weather Service Saint Louis, MO
Updated: 12:22 pm CDT Apr 16, 2025
 
This
Afternoon
This Afternoon: Mostly sunny, with a high near 72. South wind 6 to 8 mph.
Mostly Sunny

 Tonight

Tonight: A chance of showers before 1am, then showers likely and possibly a thunderstorm between 1am and 4am, then a chance of showers and thunderstorms after 4am. Mostly cloudy, with a low around 54. South wind 9 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.
Chance
Showers then
Showers
Likely
 Thursday

Thursday: Showers and thunderstorms, mainly before noon. High near 76. Breezy, with a south wind 13 to 20 mph, with gusts as high as 31 mph. Chance of precipitation is 80%.
Showers then
Slight Chance
T-storms and
Breezy
 Thursday
Night
Thursday Night: Partly cloudy, with a low around 65. South wind 13 to 15 mph, with gusts as high as 26 mph.
Partly Cloudy

 Friday

Friday: A chance of showers between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 84. South wind 11 to 14 mph, with gusts as high as 26 mph. Chance of precipitation is 40%.
Partly Sunny
then Chance
T-storms
 Friday
Night
Friday Night: Showers and possibly a thunderstorm. Low around 56. Chance of precipitation is 90%.
Showers

 Saturday

Saturday: Showers and possibly a thunderstorm. High near 64. Chance of precipitation is 80%.
Showers

 Saturday
Night
Saturday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 54. Chance of precipitation is 70%.
Showers
Likely

 Sunday

Sunday: Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 65. Chance of precipitation is 70%.
Showers
Likely
Hi 72 °F Lo 54 °F Hi 76 °F Lo 65 °F Hi 84 °F Lo 56 °F Hi 64 °F Lo 54 °F Hi 65 °F

Hazardous Weather Outlook
 

This Afternoon
 
 Mostly sunny, with a high near 72. South wind 6 to 8 mph.
Tonight
 
 A chance of showers before 1am, then showers likely and possibly a thunderstorm between 1am and 4am, then a chance of showers and thunderstorms after 4am. Mostly cloudy, with a low around 54. South wind 9 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.
Thursday
 
 Showers and thunderstorms, mainly before noon. High near 76. Breezy, with a south wind 13 to 20 mph, with gusts as high as 31 mph. Chance of precipitation is 80%.
Thursday Night
 
 Partly cloudy, with a low around 65. South wind 13 to 15 mph, with gusts as high as 26 mph.
Friday
 
 A chance of showers between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 84. South wind 11 to 14 mph, with gusts as high as 26 mph. Chance of precipitation is 40%.
Friday Night
 
 Showers and possibly a thunderstorm. Low around 56. Chance of precipitation is 90%.
Saturday
 
 Showers and possibly a thunderstorm. High near 64. Chance of precipitation is 80%.
Saturday Night
 
 Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 54. Chance of precipitation is 70%.
Sunday
 
 Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 65. Chance of precipitation is 70%.
Sunday Night
 
 A 50 percent chance of showers. Mostly cloudy, with a low around 48.
Monday
 
 A 30 percent chance of showers. Mostly sunny, with a high near 65.
Monday Night
 
 Partly cloudy, with a low around 48.
Tuesday
 
 A 20 percent chance of showers. Mostly sunny, with a high near 73.

 

Forecast from NOAA-NWS for Saint Peters MO.