


NWS Forecast for: Sullivan IL Issued by: National Weather Service Lincoln, IL Last Update: 12:41 pm CDT Jul 15, 2025 | ![]() |
This Afternoon: Scattered showers and thunderstorms. Mostly cloudy, with a high near 85. South wind around 7 mph. Chance of precipitation is 40%. Tonight: Scattered showers and thunderstorms before 1am, then isolated showers and thunderstorms after 3am. Partly cloudy, with a low around 71. South southeast wind 3 to 5 mph. Chance of precipitation is 40%. Wednesday: Isolated showers and thunderstorms before 10am, then a slight chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 89. Southwest wind 5 to 9 mph. Chance of precipitation is 20%. Wednesday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 72. South southwest wind 5 to 8 mph. Chance of precipitation is 30%. Thursday: Showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 84. West southwest wind around 7 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms. Thursday Night: A chance of showers and thunderstorms before 10pm, then a chance of showers between 10pm and 1am. Mostly cloudy, with a low around 66. North northwest wind around 5 mph becoming light and variable. Chance of precipitation is 40%. Friday: A 30 percent chance of showers after 1pm. Partly sunny, with a high near 82. Northeast wind 3 to 5 mph. Friday Night: Mostly cloudy, with a low around 68. Saturday: A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 86. Saturday Night: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 71. Sunday: A chance of showers and thunderstorms. Partly sunny, with a high near 87. Sunday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 69. Monday: A chance of showers and thunderstorms. Mostly sunny, with a high near 88. | |
Sullivan IL 39.59°N 88.61°W (Elev. 669 ft) | |
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