10-Day Weather Forecast - McHenry, IL

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  • |17°F
    Mostly Cloudy
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    Tonight

    17°F

    Mostly cloudy. Lows around 19. Temperature rising into the upper 20s after midnight. South winds 10 to 15 mph. Gusts up to 25 mph after midnight.

    Hourly details
  • Weekend Weather

  • Day

    38°F

    Mostly cloudy in the morning then becoming partly cloudy. Highs in the upper 30s. Temperature falling into the lower 30s in the afternoon. Southwest winds 10 to 15 mph becoming west in the afternoon. Gusts up to 25 mph.

    Night

    14°F

    Clear. Lows around 11. West winds 10 to 15 mph with gusts up to 25 mph.

    Hourly details
  • Day

    25°F

    Sunny. Highs in the mid 20s. West winds 5 to 10 mph.

    Night

    22°F

    Mostly cloudy. A slight chance of snow after midnight. Lows around 17. South winds 5 to 10 mph. Chance of precipitation 20 percent.

    Hourly details
  • Day

    38°F

    Cloudy. A slight chance of snow in the morning. Highs in the upper 30s. Chance of precipitation 20 percent.

    Night

    38°F

    Cloudy. Near steady temperature in the mid 30s.

    Hourly details
  • Day

    46°F

    Mostly cloudy. Highs in the mid 40s.

    Night

    35°F

    Mostly cloudy. Lows in the upper 20s.

    Hourly details
  • Day

    43°F

    Cloudy. Highs in the mid 40s.

    Night

    42°F

    Cloudy. A chance of rain in the evening. Near steady temperature in the lower 40s. Chance of precipitation 30 percent.

    Hourly details
  • Day

    55°F

    Mostly cloudy. Highs in the mid 50s.

    Night

    40°F

    Mostly cloudy. Lows in the lower 30s.

    Hourly details
  • Day

    47°F

    Partly cloudy in the morning then becoming mostly cloudy. Highs in the mid 40s.

    Night

    40°F

    Partly cloudy. Low temperature around 40F. Dew point will be around 36F with an average humidity of 80%. Winds will be 3 mph from the W.

  • Weekend Weather

  • Day

    44°F

    Mostly cloudy. High temperature around 44F. Dew point will be around 33F with an average humidity of 71%. Winds will be 4 mph from the NW.

    Night

    32°F

    Partly cloudy. Low temperature around 32F. Dew point will be around 28F with an average humidity of 76%. Winds will be 5 mph from the N.

  • Day

    36°F

    Partly cloudy. High temperature around 36F. Dew point will be around 24F with an average humidity of 66%. Winds will be 5 mph from the N.

    Night

    29°F

    Mostly clear. Low temperature around 29F. Dew point will be around 22F with an average humidity of 71%. Winds will be 3 mph from the N.