NWS Forecast for Maryland Heights MO

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

Updated: 8:52 pm CDT Jun 22, 2025

Tonight Clear	Monday Hot	Monday Night Partly Cloudy	Tuesday Slight Chance T-storms	Tuesday Night Mostly Cloudy	Wednesday Hot	Wednesday Night Mostly Clear	Thursday Hot	Thursday Night Partly Cloudy
Lo 79 °F	Hi 97 °F	Lo 78 °F	Hi 98 °F	Lo 77 °F	Hi 97 °F	Lo 76 °F	Hi 98 °F	Lo 76 °F

Extreme Heat Warning
Hazardous Weather Outlook

Tonight	Clear, with a low around 79. South wind 6 to 8 mph.
Monday	Sunny and hot, with a high near 97. Heat index values as high as 104. Southwest wind 7 to 9 mph.
Monday Night	Partly cloudy, with a low around 78. South wind 5 to 8 mph becoming calm after midnight.
Tuesday	A 20 percent chance of showers and thunderstorms. Mostly sunny and hot, with a high near 98. Heat index values as high as 107. Calm wind becoming southwest around 5 mph in the afternoon.
Tuesday Night	Mostly cloudy, with a low around 77. Light south wind.
Wednesday	Mostly sunny and hot, with a high near 97.
Wednesday Night	Mostly clear, with a low around 76.
Thursday	Sunny and hot, with a high near 98.
Thursday Night	Partly cloudy, with a low around 76.
Friday	A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 96.
Friday Night	A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 76.
Saturday	A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 95.
Saturday Night	A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 75.
Sunday	A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 95.

Forecast from NOAA-NWS for Maryland Heights MO.