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      Elev 735 ft, 42.254 °N 88.184 °W

      Port Barrington, IL

      Williams Park Station82°
      Updated: 3:05 PM CDT on September 11, 2026 (GMT -5)
      4 minutes ago
      82°
      55°
      82
      Feels Like 83
      Fair
      N
      8
      Similar temperature is expected tomorrow
      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
        Sat 09/12
        High 81°f
         1% Precip. / 0 in
        Sunny. High 81F. Winds SE at 5 to 10 mph.
        Tonight
        Sat 09/12
        Low 63°f
         13% Precip. / 0 in
        Mainly clear. Low 63F. Winds light and variable.
        Tomorrow
        Sun 09/13
        High 84°f55°f
         22% Precip. / 0 in
        Partly cloudy skies. High 84F. Winds WSW at 10 to 15 mph.
        Hourly Forecast
        Now
        81°
        4PM
        81°
        5PM
        80°
        6PM
        78°
        7PM
        72°
        7:09PM
        Sunset
        8PM
        70°
        9PM
        68°
        10PM
        66°
        11PM
        65°
        12AM
        65°
        1AM
        64°
        2AM
        64°
        3AM
        64°
        4AM
        64°
        5AM
        64°
        6AM
        64°
        6:29AM
        Sunrise
        7AM
        64°
        8AM
        68°
        9AM
        72°
        10AM
        76°
        11AM
        78°
        12PM
        81°
        1PM
        81°
        2PM
        82°
        3PM
        82°
        Precipitation
        22%
        Pollen
        None
        Air Quality
        32
        Good
        UV Index
        4
        Moderate
        Additional Conditions
        1. Pressure 29.92 in
        2. Visibility 10 miles
        3. Clouds Partly Cloudy
        4. Dew Point56°F
        5. Humidity 43%
        6. Rainfall 0 in
        7. Snow Depth 0 in
         KPWK Station History
        Almanac for September 11, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 82°F 74°F 91°F 1983
        4. Low 55°F 56°F 42°F 1977
        5. Rain/Snow Depth
        6. Precipitation 0 in 3.4 in -
        7. Snow 0 in 0 in -
        Almanac for September 12, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 84°F 74°F 89°F
        4. Low 55°F 55°F 39°F
        Astronomy
        1. Sun Rise Set
        2. Actual Time 6:28 AM 7:09 PM
        3. Civil Twilight 6:00 AM 7:37 PM
        4. Nautical Twilight 5:26 AM 8:10PM
        5. Astronomical Twilight 4:52 AM 8:45 PM
        1. Length of Visible Light 13h 37m
        2. Length of Day 12h 40m
        3. Tomorrow will be 2 minutes 48 seconds shorter
        1. Moon 7:00 AM 7:15 PM
        2. Waxing Crescent0% of the Moon is Illuminated
        Sep 18
        Waxing Half First Qtr
        Sep 26
        Full Moon
        Oct 3
        Waning Half Last Qtr
        Oct 10
        New Moon
        Precipitation
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