| NWS Forecast for: Eureka MO Issued by: National Weather Service Saint Louis, MO Last Update: 1:26 pm CDT Sep 8, 2026 |  |
This Afternoon: Partly sunny, with a high near 93. Calm wind becoming southeast around 5 mph. Tonight: Mostly clear, with a low around 72. Southeast wind 3 to 6 mph. Wednesday: A 30 percent chance of showers and thunderstorms, mainly after 4pm. Increasing clouds, with a high near 94. Heat index values as high as 101. South wind 5 to 9 mph becoming west in the afternoon. Wednesday Night: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 2am. Low around 68. Northwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 80%. Thursday: Showers and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. High near 81. Light west wind. Chance of precipitation is 80%. Thursday Night: Mostly cloudy, with a low around 63. Friday: Mostly sunny, with a high near 85. Friday Night: Mostly clear, with a low around 65. Saturday: A chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 90. Chance of precipitation is 30%. Saturday Night: A 30 percent chance of showers. Mostly cloudy, with a low around 67. Sunday: A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 88. Sunday Night: A 20 percent chance of showers. Partly cloudy, with a low around 66. Monday: A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 89. | |
| Eureka MO 38.5°N 90.66°W (Elev. 597 ft) | |
Visit your local NWS office at: https://www.weather.gov/lsx/ |
