| NWS Forecast for: Sullivan MO Issued by: National Weather Service Saint Louis, MO Last Update: 1:26 pm CDT Sep 6, 2026 |  |
| This Afternoon: Sunny, with a high near 91. Northeast wind around 6 mph. Tonight: Partly cloudy, with a low around 64. East wind 3 to 5 mph. Labor Day: Sunny, with a high near 87. East wind 3 to 5 mph. Monday Night: Mostly clear, with a low around 63. Light east wind. Tuesday: Mostly sunny, with a high near 93. Calm wind becoming south around 5 mph. Tuesday Night: Mostly clear, with a low around 71. Wednesday: Sunny, with a high near 94. Wednesday Night: Showers and possibly a thunderstorm. Low around 67. Chance of precipitation is 80%. Thursday: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 82. Thursday Night: A 20 percent chance of showers before 1am. Partly cloudy, with a low around 62. Friday: A 20 percent chance of showers. Sunny, with a high near 84. Friday Night: A 30 percent chance of showers and thunderstorms. Mostly clear, with a low around 64. Saturday: A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 88. | |
| Sullivan MO 38.22°N 91.15°W (Elev. 938 ft) | |
Visit your local NWS office at: https://www.weather.gov/lsx/ |
