I-255 IL weather conditions near Dupo, Illinois
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Seasoned Weather Conditions
Current Weather Conditions
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7 day weather forecast
Current condition: Fair 67°F 2025-09-23T00:53:00-05:00 
Overnight 2025-09-23, Areas Dense Fog. Patchy dense fog before 4am, then areas of dense fog after 5am. Otherwise, partly cloudy, with a low around 64. Calm wind.Tuesday 2025-09-23, Patchy Dense Fog then Showers Likely. A slight chance of showers before 1pm, then a chance of showers and thunderstorms between 1pm and 4pm, then showers likely and possibly a thunderstorm after 4pm. Patchy dense fog before 10am. Otherwise, mostly cloudy, with a high near 81. Calm wind becoming south around 6 mph in the afternoon. Chance of precipitation is 60%.
Tuesday Night 2025-09-23, Showers. Showers and possibly a thunderstorm. Low around 66. Light and variable wind becoming east around 6 mph after midnight. Chance of precipitation is 80%.
Wednesday 2025-09-24, Showers Likely. Showers likely and possibly a thunderstorm before 7am, then showers likely between 7am and 1pm, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 78. East wind 6 to 9 mph becoming north in the afternoon. Chance of precipitation is 70%.Wednesday Night 2025-09-24, Chance T-storms then Chance Showers. A chance of showers and thunderstorms. Mostly cloudy, with a low around 61. Northwest wind around 6 mph. Chance of precipitation is 30%.
Thursday 2025-09-25, Chance Showers. A 30 percent chance of showers, mainly after 1pm. Mostly sunny, with a high near 77.
Thursday Night 2025-09-25, Mostly Clear. Mostly clear, with a low around 56.
Friday 2025-09-26, Sunny. Sunny, with a high near 80.
Friday Night 2025-09-26, Clear. Clear, with a low around 56.- Saturday 2025-09-27, Sunny. Sunny, with a high near 84.
- Saturday Night 2025-09-27, Mostly Clear. Mostly clear, with a low around 57.
- Sunday 2025-09-28, Sunny. Sunny, with a high near 86.
- Sunday Night 2025-09-28, Mostly Clear. Mostly clear, with a low around 58.
- Monday 2025-09-29, Sunny. Sunny, with a high near 85.