| NWS Forecast for: McHenry County Issued by: National Weather Service Chicago, IL Last Update: 906 PM CST Fri Dec 26 2025 |  |
Rest Of Tonight: Cloudy. Patchy fog in the late evening and early morning. Areas of dense fog late. Near steady temperature in the mid 30s. Light and variable winds, becoming east around 5 mph after midnight. Saturday: Cloudy. Areas of dense fog in the morning, then patchy fog early in the afternoon. Highs in the mid 40s. Southeast winds 5 to 10 mph. Saturday Night: Cloudy. Patchy fog late in the evening. Areas of fog after midnight. A chance of drizzle late in the evening. Scattered showers in the late evening and overnight. Areas of drizzle after midnight. Lows in the lower 40s. Southeast winds 5 to 10 mph. Chance of precipitation 50 percent. Sunday: Cloudy. Areas of fog in the morning. Scattered showers in the morning, then showers in the afternoon. Highs in the lower 50s. South winds around 5 mph, increasing to west 10 to 15 mph with gusts up to 25 mph in the afternoon. Chance of precipitation 90 percent. Sunday Night: Cloudy. Rain and snow likely in the evening, then a chance of snow after midnight. Some snow accumulation possible. Windy with lows around 17. Northwest winds 15 to 25 mph, increasing to west 20 to 30 mph after midnight. Gusts up to 40 mph. Chance of precipitation 70 percent. Monday: Mostly cloudy. A chance of snow, mainly in the morning. Windy with highs in the lower 20s. Chance of precipitation 50 percent. Monday Night: Partly cloudy in the evening, then clearing. Blustery with lows around 10 above. Tuesday: Partly cloudy in the morning, then becoming mostly cloudy. Highs in the mid 20s. Tuesday Night: Mostly cloudy. Lows around 20. Wednesday: Mostly cloudy. Highs in the mid 20s. Wednesday Night: Mostly cloudy in the evening, then clearing. Lows zero to 5 above zero. Wind chill values as low as 15 below after midnight. New Years Day: Mostly sunny. Highs 10 to 15. Wind chill values as low as 15 below in the morning. Thursday Night: Mostly clear. Lows around zero. Wind chill values as low as 10 below. Friday: Partly cloudy. Highs around 20. | |
| Zone Forecast: McHenry County | |
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