| NWS Forecast for: Decatur IL Issued by: National Weather Service Lincoln, IL Last Update: 12:26 pm CDT Jul 13, 2025 |  |
This Afternoon: Showers likely and possibly a thunderstorm before 4pm, then a chance of showers and thunderstorms after 4pm. Mostly cloudy, with a high near 85. Light and variable wind becoming southwest around 6 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms. Tonight: A 30 percent chance of showers and thunderstorms, mainly before 9pm. Patchy fog after 3am. Otherwise, mostly cloudy, with a low around 69. Southeast wind around 6 mph becoming calm in the evening. Monday: Patchy fog before 8am. Otherwise, sunny, with a high near 87. Calm wind becoming east around 5 mph. Monday Night: Partly cloudy, with a low around 70. Calm wind. Tuesday: A 40 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 89. South wind 3 to 7 mph. Tuesday Night: Partly cloudy, with a low around 72. South wind 3 to 6 mph. Wednesday: A 50 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 90. Southwest wind 6 to 8 mph, with gusts as high as 15 mph. Wednesday Night: A 40 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 72. Thursday: A 40 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 86. Thursday Night: A 30 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 67. Friday: A chance of showers. Mostly sunny, with a high near 84. Friday Night: Partly cloudy, with a low around 68. Saturday: A chance of showers. Mostly sunny, with a high near 87. | |
| Decatur IL 39.84°N 88.94°W (Elev. 692 ft) | |
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