| NWS Forecast for: Pontiac IL Issued by: National Weather Service Chicago, IL Last Update: 3:46 am CDT Jul 17, 2026 |  |
Overnight: A 20 percent chance of showers and thunderstorms. Patchy smoke. Partly cloudy, with a low around 22. Calm wind. Friday: Scattered showers and thunderstorms, mainly after 7am. Patchy smoke before 2pm. Partly sunny, with a high near 31. Heat index values as high as 36. Calm wind becoming west southwest 5 to 10 km/h in the afternoon. Winds could gust as high as 20 km/h. Chance of precipitation is 50%. Friday Night: Scattered showers and thunderstorms, mainly before 8pm. Partly cloudy, with a low around 23. Southwest wind 5 to 10 km/h, with gusts as high as 25 km/h. Chance of precipitation is 30%. Saturday: A 40 percent chance of showers and thunderstorms, mainly after 3pm. Mostly sunny, with a high near 32. Heat index values as high as 40. West southwest wind 10 to 15 km/h, with gusts as high as 30 km/h. Saturday Night: A chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am. Mostly clear, with a low around 19. North northwest wind 5 to 10 km/h becoming east northeast after midnight. Winds could gust as high as 20 km/h. Chance of precipitation is 30%. Sunday: Sunny, with a high near 29. Sunday Night: Mostly clear, with a low around 18. Monday: Mostly sunny, with a high near 31. Monday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 22. Tuesday: Mostly sunny, with a high near 30. Tuesday Night: Mostly clear, with a low around 17. Wednesday: Sunny, with a high near 27. Wednesday Night: Mostly clear, with a low around 15. Thursday: Sunny, with a high near 27. | |
| Pontiac IL 40.89°N 88.62°W | |
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