National Weather Service Forecast for:
Mehlville MO Issued by: National Weather Service Saint Louis, MO |
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Updated: 2:21 pm CDT Jul 25, 2025 | ||||||||||||||||||
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Extreme Heat Warning
Hazardous Weather Outlook
This Afternoon |
Isolated showers and thunderstorms. Mostly sunny and hot, with a high near 97. Heat index values as high as 110. Southeast wind 3 to 6 mph. Chance of precipitation is 20%. |
Tonight |
Isolated showers and thunderstorms before 10pm. Partly cloudy, with a low around 77. South wind 3 to 6 mph. Chance of precipitation is 20%. |
Saturday |
Isolated showers and thunderstorms after 3pm. Mostly sunny, with a high near 94. Heat index values as high as 106. South wind 3 to 8 mph. Chance of precipitation is 20%. |
Saturday Night |
Isolated showers and thunderstorms before 10pm. Partly cloudy, with a low around 78. South wind 3 to 6 mph. Chance of precipitation is 20%. |
Sunday |
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 94. Southwest wind 3 to 5 mph. |
Sunday Night |
Mostly clear, with a low around 78. |
Monday |
Sunny and hot, with a high near 99. |
Monday Night |
Mostly clear, with a low around 79. |
Tuesday |
A 20 percent chance of showers and thunderstorms after 1pm. Sunny and hot, with a high near 100. |
Tuesday Night |
A 20 percent chance of showers and thunderstorms. Mostly clear, with a low around 77. |
Wednesday |
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 94. |
Wednesday Night |
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 71. |
Thursday |
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 85. |
Forecast from NOAA-NWS for Mehlville MO.