| NWS Forecast for: Brentwood MO Issued by: National Weather Service Saint Louis, MO Last Update: 4:01 pm CDT Aug 13, 2026 | |
Tonight: Partly cloudy, with a low around 77. South wind 5 to 7 mph. Friday: A 20 percent chance of showers and thunderstorms before 8am. Mostly sunny and hot, with a high near 100. Heat index values as high as 114. South wind 3 to 6 mph. Friday Night: Mostly clear, with a low around 78. South wind around 5 mph. Saturday: Sunny and hot, with a high near 100. Heat index values as high as 110. West wind 5 to 7 mph. Saturday Night: Mostly clear, with a low around 78. Calm wind becoming southwest around 5 mph after midnight. Sunday: Mostly sunny and hot, with a high near 99. Sunday Night: A chance of showers and thunderstorms before 1am, then a slight chance of showers. Partly cloudy, with a low around 74. Chance of precipitation is 40%. Monday: A slight chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 88. Chance of precipitation is 20%. Monday Night: Partly cloudy, with a low around 71. Tuesday: Mostly sunny, with a high near 90. Tuesday Night: Mostly clear, with a low around 74. Wednesday: Mostly sunny, with a high near 95. Wednesday Night: A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 74. Thursday: Mostly sunny, with a high near 91. | |
| Brentwood MO 38.62°N 90.35°W (Elev. 499 ft) | |
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