| NWS Forecast for: Markham IL Issued by: National Weather Service Chicago, IL Last Update: 1:21 am CDT Jul 19, 2026 | |
Overnight: Widespread smoke. Partly cloudy, with a low around 67. North northeast wind around 5 mph, with gusts as high as 10 mph. Sunday: Patchy smoke. Mostly sunny, with a high near 80. Northeast wind 5 to 10 mph. Sunday Night: Patchy smoke before 1am. Mostly clear, with a low around 63. East northeast wind around 5 mph becoming calm in the evening. Monday: Increasing clouds, with a high near 84. South southwest wind 5 to 10 mph, with gusts as high as 15 mph. Monday Night: Showers and thunderstorms likely, mainly after 1am. Mostly cloudy, with a low around 72. South southwest wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. Tuesday: A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 86. Tuesday Night: Partly cloudy, with a low around 65. Wednesday: Mostly sunny, with a high near 76. Wednesday Night: Mostly clear, with a low around 60. Thursday: Sunny, with a high near 81. Thursday Night: Partly cloudy, with a low around 63. Friday: Mostly sunny, with a high near 83. Friday Night: Partly cloudy, with a low around 66. Saturday: Mostly sunny, with a high near 86. | |
| Markham IL 41.6°N 87.7°W | |
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