I-55 weather conditions near McLean, Illinois
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Seasoned Weather Conditions
Current Weather Conditions
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7 day weather forecast
Current condition: Fog/Mist 66°F 2025-09-21T08:35:00-05:00 Today 2025-09-21, Isolated Showers then Scattered T-storms. Scattered showers and thunderstorms, mainly after 4pm. Partly sunny, with a high near 81. South southeast wind 6 to 10 mph becoming southwest in the afternoon. Chance of precipitation is 30%.
Tonight 2025-09-21, Scattered T-storms then Showers. Showers and thunderstorms likely, then showers and possibly a thunderstorm after 1am. Low around 64. South southwest wind around 6 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Monday 2025-09-22, Showers Likely. Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 76. South southwest wind 6 to 10 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday Night 2025-09-22, Chance Showers. A 40 percent chance of showers. Mostly cloudy, with a low around 62. South southwest wind around 5 mph becoming calm in the evening.Tuesday 2025-09-23, Chance Showers then Chance T-storms. A chance of showers, with thunderstorms also possible after 4pm. Mostly cloudy, with a high near 79. Calm wind becoming southeast around 6 mph in the morning. Chance of precipitation is 40%.
Tuesday Night 2025-09-23, Chance T-storms then Chance Showers. A chance of showers and thunderstorms. Mostly cloudy, with a low around 61. East northeast wind around 6 mph. Chance of precipitation is 40%.
Wednesday 2025-09-24, Chance Showers. A 30 percent chance of showers. Mostly cloudy, with a high near 75. Northeast wind 7 to 10 mph, with gusts as high as 16 mph.
Wednesday Night 2025-09-24, Chance Showers. A 30 percent chance of showers. Mostly cloudy, with a low around 59.- Thursday 2025-09-25, Chance Showers. A 30 percent chance of showers. Partly sunny, with a high near 73.
Thursday Night 2025-09-25, Partly Cloudy. Partly cloudy, with a low around 55.
Friday 2025-09-26, Chance Showers. A chance of showers. Mostly sunny, with a high near 74.- Friday Night 2025-09-26, Partly Cloudy. Partly cloudy, with a low around 54.
Saturday 2025-09-27, Sunny. Sunny, with a high near 76.