I-57 weather conditions near Johnston City, Illinois
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Seasoned Weather Conditions
Current Weather Conditions
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7 day weather forecast
Current condition: Overcast 72°F 2025-06-17T05:35:00-05:00 
Overnight 2025-06-17, Slight Chance Showers. A 20 percent chance of showers. Mostly cloudy, with a low around 70. Calm wind.
Tuesday 2025-06-17, Chance T-storms and Patchy Fog. A 30 percent chance of showers and thunderstorms, mainly before 8am. Patchy fog before 8am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 86. Calm wind becoming south southwest around 5 mph in the afternoon.
Tuesday Night 2025-06-17, Partly Cloudy. Partly cloudy, with a low around 73. South wind 3 to 7 mph.Wednesday 2025-06-18, Slight Chance T-storms then T-storms Likely. Showers and thunderstorms likely, mainly after 1pm. Partly sunny, with a high near 88. South southwest wind 9 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 70%.
Wednesday Night 2025-06-18, Showers Likely. Showers likely and possibly a thunderstorm before 1am, then a slight chance of showers and thunderstorms between 1am and 4am, then a slight chance of showers after 4am. Mostly cloudy, with a low around 70. Southwest wind 6 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.
Juneteenth 2025-06-19, Slight Chance Showers. A 20 percent chance of showers before 1pm. Mostly sunny, with a high near 85. West northwest wind around 6 mph.
Thursday Night 2025-06-19, Mostly Clear. Mostly clear, with a low around 68. Calm wind.
Friday 2025-06-20, Sunny. Sunny, with a high near 89. Calm wind becoming south southwest 5 to 7 mph in the morning.- Friday Night 2025-06-20, Mostly Clear. Mostly clear, with a low around 73. South wind around 6 mph.
- Saturday 2025-06-21, Sunny. Sunny, with a high near 93. South southwest wind 7 to 11 mph, with gusts as high as 20 mph.
- Saturday Night 2025-06-21, Mostly Clear. Mostly clear, with a low around 76. South wind 6 to 9 mph.
- Sunday 2025-06-22, Sunny. Sunny, with a high near 94. South southwest wind 6 to 9 mph.
Sunday Night 2025-06-22, Clear. Clear, with a low around 76. South wind 3 to 6 mph.Monday 2025-06-23, Sunny then Slight Chance T-storms. A slight chance of showers and thunderstorms. Sunny, with a high near 93. South southwest wind 3 to 7 mph.