I-55 weather conditions near Festus, Missouri
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Current Weather Conditions
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7 day weather forecast
Current condition: Fair 76°F 2025-06-22T23:56:00-05:00 
Overnight 2025-06-23, Clear. Clear, with a low around 75. South wind 3 to 5 mph.Monday 2025-06-23, Sunny then Slight Chance T-storms. A 20 percent chance of showers and thunderstorms after 3pm. Sunny, with a high near 96. Heat index values as high as 104. Southwest wind 5 to 7 mph.
Monday Night 2025-06-23, Slight Chance T-storms then Mostly Clear. A 20 percent chance of showers and thunderstorms before 10pm. Mostly clear, with a low around 76. South wind 5 to 7 mph becoming calm in the evening.
Tuesday 2025-06-24, Slight Chance T-storms. A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 96. Heat index values as high as 105. Light south wind.- Tuesday Night 2025-06-24, Partly Cloudy. Partly cloudy, with a low around 75. Calm wind.
Wednesday 2025-06-25, Mostly Sunny. Mostly sunny, with a high near 96.
Wednesday Night 2025-06-25, Mostly Clear. Mostly clear, with a low around 75.
Thursday 2025-06-26, Hot. Sunny and hot, with a high near 97.- Thursday Night 2025-06-26, Mostly Clear. Mostly clear, with a low around 75.
Friday 2025-06-27, Mostly Sunny then Slight Chance T-storms. A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 95.
Friday Night 2025-06-27, Slight Chance T-storms. A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 75.
Saturday 2025-06-28, Slight Chance T-storms. A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 95.- Saturday Night 2025-06-28, Slight Chance T-storms. A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 74.
Sunday 2025-06-29, Chance T-storms. A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 95.