| NWS Forecast for: Olney IL Issued by: National Weather Service Lincoln, IL Last Update: 6:36 pm CDT Jun 9, 2026 |  |
Tonight: A 40 percent chance of showers and thunderstorms, mainly between 1am and 4am. Partly cloudy, with a low around 74. South wind 6 to 8 mph, with gusts as high as 15 mph. Wednesday: Sunny, with a high near 92. Heat index values as high as 102. South southwest wind 8 to 15 mph, with gusts as high as 22 mph. Wednesday Night: Mostly clear, with a low around 76. South southwest wind 9 to 13 mph, with gusts as high as 21 mph. Thursday: Sunny, with a high near 93. Heat index values as high as 102. South southwest wind 9 to 17 mph, with gusts as high as 25 mph. Thursday Night: Showers likely and possibly a thunderstorm. Increasing clouds, with a low around 72. South southwest wind 10 to 16 mph becoming west after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms. Friday: Sunny, with a high near 84. Northwest wind around 9 mph, with gusts as high as 15 mph. Friday Night: Mostly clear, with a low around 64. Northwest wind around 5 mph becoming calm in the evening. Saturday: Sunny, with a high near 86. Saturday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 68. Chance of precipitation is 40%. Sunday: A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 84. Chance of precipitation is 50%. Sunday Night: A chance of showers. Mostly cloudy, with a low around 64. Monday: Partly sunny, with a high near 81. Monday Night: Partly cloudy, with a low around 61. Tuesday: Mostly sunny, with a high near 80. | |
| Olney IL 38.7°N 88.1°W (Elev. 449 ft) | |
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