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      Special Weather Statement
      until 7:00 AM CDT
      Elev 902 ft, 42.220 °N 88.357 °W

      Crystal Lake, IL

      Crystal Lake Station53°
      Updated: 5:02 AM CDT on September 29, 2026 (GMT -5)
      7 minutes ago
      77°
      49°
      53
      Feels Like 53
      Fog
      N
      0
      Similar temperature is expected today
      Wundermap
      50
      50
      575
      90
      50
      7
      0 mph
      50
      50
      50
      50
      50
      50
      Radar · Now
        Hyper-local data from Weather Underground's network of
        400,000+ personal weather stations worldwide
        Today
        Tue 09/29
        High 77°f
         15% Precip. / 0 in
        Morning fog, then cloudy this afternoon. High 77F. Winds S at 5 to 10 mph.
        Tonight
        Tue 09/29
        Low 60°f
         67% Precip. / 0.06 in
        Cloudy skies with a few showers after midnight. Low near 60F. Winds SSW at 5 to 10 mph. Chance of rain 70%.
        Tomorrow
        Wed 09/30
        High 67°f63°f
         95% Precip. / 0.69 in
        Rain early...then remaining cloudy with showers in the afternoon. High 67F. Winds SSW at 10 to 15 mph. Chance of rain 100%. Rainfall near a half an inch.
        Hourly Forecast
        Now
        51°
        6AM
        15%
        50°
        6:48AM
        Sunrise
        7AM
        15%
        50°
        8AM
        55°
        9AM
        58°
        10AM
        63°
        11AM
        67°
        12PM
        71°
        1PM
        74°
        2PM
        75°
        3PM
        75°
        4PM
        74°
        5PM
        73°
        6PM
        70°
        6:38PM
        Sunset
        7PM
        68°
        8PM
        65°
        9PM
        65°
        10PM
        65°
        11PM
        65°
        12AM
        65°
        1AM
        65°
        2AM
        65°
        3AM
        65°
        4AM
        30%
        64°
        5AM
        33%
        63°
        Precipitation
        33%
        Pollen
        Ragweed Pollen
        Low
        Air Quality
        63
        Moderate
        UV Index
        0
        Low
        Additional Conditions
        1. Pressure 30.04 in
        2. Visibility 0.25 miles
        3. Clouds Cloudy
        4. Dew Point48°F
        5. Humidity 91%
        6. Rainfall 0 in
        7. Snow Depth 0 in
         K06C Station History
        Almanac for September 29, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 77°F 71°F 84°F 1922
        4. Low 49°F 47°F 34°F 1992
        5. Rain/Snow Depth
        6. Precipitation 0.06 in 2.9 in -
        7. Snow 0 in 0 in -
        Almanac for September 30, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 67°F 70°F 90°F
        4. Low 60°F 47°F 25°F
        Astronomy
        1. Sun Rise Set
        2. Actual Time 6:48 AM 6:38 PM
        3. Civil Twilight 6:20 AM 7:06 PM
        4. Nautical Twilight 5:47 AM 7:38PM
        5. Astronomical Twilight 5:14 AM 8:11 PM
        1. Length of Visible Light 12h 45m
        2. Length of Day 11h 49m
        3. Tomorrow will be 2 minutes 49 seconds shorter
        1. Moon 7:55 PM 10:22 AM
        2. Waning Gibbous86% of the Moon is Illuminated
        Oct 3
        Waning Half Last Qtr
        Oct 10
        New Moon
        Oct 18
        Waxing Half First Qtr
        Oct 25
        Full Moon
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