| NWS Forecast for: Dekalb IL Issued by: National Weather Service Chicago, IL Last Update: 6:56 pm CDT Jul 15, 2025 | |
Tonight: Partly cloudy, with a low around 71. South southeast wind around 5 mph becoming calm in the evening. Wednesday: Showers and thunderstorms likely, mainly after 4pm. Partly sunny, with a high near 89. Heat index values as high as 98. South southwest wind 5 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms. Wednesday Night: Showers and thunderstorms likely, mainly before 1am. Mostly cloudy, with a low around 66. West southwest wind 5 to 10 mph, with gusts as high as 15 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms. Thursday: A 20 percent chance of showers and thunderstorms before 1pm. Mostly cloudy, with a high near 74. North wind around 10 mph, with gusts as high as 15 mph. Thursday Night: Mostly cloudy, with a low around 55. Northeast wind 5 to 10 mph, with gusts as high as 15 mph. Friday: Mostly sunny, with a high near 78. Friday Night: A 40 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 62. Saturday: Showers and thunderstorms likely, mainly before 1pm. Mostly cloudy, with a high near 83. Saturday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 66. Sunday: A chance of showers and thunderstorms. Partly sunny, with a high near 82. Sunday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 63. Monday: A chance of showers and thunderstorms. Partly sunny, with a high near 83. Monday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 67. Tuesday: Mostly sunny, with a high near 86. | |
| Dekalb IL 41.9°N 88.76°W | |
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