NWS Forecast for Saint Peters MO

National Weather Service Forecast for: Saint Peters MO
Issued by: National Weather Service Saint Louis, MO

Updated: 5:07 pm CDT Jun 8, 2025

This Afternoon Severe T-Storms	Tonight Severe T-Storms then Chance T-storms	Monday Sunny	Monday Night Mostly Clear	Tuesday Sunny	Tuesday Night Mostly Clear	Wednesday Sunny	Wednesday Night Partly Cloudy	Thursday Mostly Sunny
Hi 83 °F	Lo 59 °F	Hi 79 °F	Lo 57 °F	Hi 82 °F	Lo 61 °F	Hi 88 °F	Lo 68 °F	Hi 87 °F

Hazardous Weather Outlook
Severe Thunderstorm Watch

This Afternoon	A 30 percent chance of showers and thunderstorms. Some of the storms could be severe. Mostly sunny, with a high near 83. West wind around 6 mph.
Tonight	Showers and thunderstorms before 2am, then a slight chance of showers between 2am and 3am. Some of the storms could be severe. Low around 59. Northwest wind 5 to 7 mph becoming west after midnight. Chance of precipitation is 80%.
Monday	Sunny, with a high near 79. West wind 5 to 11 mph, with gusts as high as 22 mph.
Monday Night	Mostly clear, with a low around 57. Northwest wind 3 to 8 mph.
Tuesday	Sunny, with a high near 82. West wind 3 to 7 mph.
Tuesday Night	Mostly clear, with a low around 61.
Wednesday	Sunny, with a high near 88.
Wednesday Night	Partly cloudy, with a low around 68.
Thursday	Mostly sunny, with a high near 87.
Thursday Night	A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 69.
Friday	A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 86.
Friday Night	A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 70.
Saturday	Showers and thunderstorms likely. Partly sunny, with a high near 85. Chance of precipitation is 60%.
Saturday Night	A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 69.
Sunday	A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 83.

Forecast from NOAA-NWS for Saint Peters MO.