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I-255 IL weather conditions near Saint Louis, Missouri

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       Current Weather Conditions

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7 day weather forecast

  • Current condition: Fair 77°F 2025-07-17T01:53:00-05:00
  • Overnight 2025-07-17, Slight Chance T-storms. A 20 percent chance of showers and thunderstorms before 5am. Mostly cloudy, with a low around 76. Light west wind.
  • Thursday 2025-07-17, Slight Chance T-storms then T-storms Likely. Showers and thunderstorms likely, mainly after 5pm. Mostly cloudy, with a high near 87. Calm wind becoming north around 5 mph. Chance of precipitation is 60%.
  • Thursday Night 2025-07-17, Chance T-storms. A 30 percent chance of showers and thunderstorms, mainly before 10pm. Mostly cloudy, with a low around 72. Light northeast wind.
  • Friday 2025-07-18, Showers Likely then T-storms Likely. Showers likely and possibly a thunderstorm before 1pm, then showers and thunderstorms likely after 1pm. Partly sunny, with a high near 89. Calm wind becoming southeast around 5 mph. Chance of precipitation is 60%.
  • Friday Night 2025-07-18, Slight Chance T-storms. A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 74. Light south wind.
  • Saturday 2025-07-19, Chance Showers then Chance T-storms. A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 94.
  • Saturday Night 2025-07-19, Slight Chance T-storms. A slight chance of showers and thunderstorms. Partly cloudy, with a low around 76. Chance of precipitation is 20%.
  • Sunday 2025-07-20, Chance T-storms. A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 95.
  • Sunday Night 2025-07-20, Chance T-storms. A 30 percent chance of showers and thunderstorms, mainly before 1am. Partly cloudy, with a low around 76.
  • Monday 2025-07-21, Slight Chance Showers then Slight Chance T-storms. A slight chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 96. Chance of precipitation is 20%.
  • Monday Night 2025-07-21, Mostly Clear. Mostly clear, with a low around 78.
  • Tuesday 2025-07-22, Hot. Sunny and hot, with a high near 98.
  • Tuesday Night 2025-07-22, Mostly Clear. Mostly clear, with a low around 78.
  • Wednesday 2025-07-23, Hot. Sunny and hot, with a high near 99.





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