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      Elev 689 ft, 39.817 °N 88.907 °W

      Decatur, IL

      Updated: 12:29 PM CDT on October 27, 2026 (GMT -5)
      8 minutes ago
      73°
      44°
      70
      Feels Like 70
      Sunny
      N
      10
      Lower temperature is expected today
      Wundermap

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      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 10/27
        High 73°f
        1% Precip. / 0 in
        Cloudy skies. Warm. High 73F. Winds S at 10 to 15 mph.
        Tonight
        Tue 10/27
        Low 49°f
        5% Precip. / 0 in
        A few clouds. Low 49F. Winds light and variable.
        Tomorrow
        Wed 10/28
        High 78°f54°f
        5% Precip. / 0 in
        Some clouds in the morning will give way to mainly sunny skies for the afternoon. Warm. High 78F. Winds S at 10 to 15 mph.
        Hourly Forecast
        Now
        71°
        1PM
        72°
        2PM
        73°
        3PM
        73°
        4PM
        71°
        5PM
        70°
        5:59PM
        Sunset
        6PM
        67°
        7PM
        63°
        8PM
        60°
        9PM
        58°
        10PM
        56°
        11PM
        56°
        12AM
        55°
        1AM
        54°
        2AM
        53°
        3AM
        52°
        4AM
        52°
        5AM
        52°
        6AM
        50°
        7AM
        50°
        7:19AM
        Sunrise
        8AM
        52°
        9AM
        57°
        10AM
        64°
        11AM
        68°
        12PM
        72°
        Additional Conditions
        1. Pressure 30.22 in
        2. Visibility 10 miles
        3. Clouds Clear
        4. Dew Point48°F
        5. Humidity 43%
        6. Rainfall 0 in
        7. Snow Depth 0 in
        KDEC Station History
        Almanac for October 27, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 73°F 60°F 87°F 1927
        4. Low 44°F 42°F 19°F 1925
        5. Rain/Snow Depth
        6. Precipitation 0 in 4.2 in -
        7. Snow 0 in 0 in -
        Almanac for October 28, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 78°F 60°F 87°F
        4. Low 49°F 41°F 19°F
        Astronomy
        1. Sun Rise Set
        2. Actual Time 7:18 AM 5:59 PM
        3. Civil Twilight 6:51 AM 6:27 PM
        4. Nautical Twilight 6:19 AM 6:58PM
        5. Astronomical Twilight 5:48 AM 7:30 PM
        1. Length of Visible Light 11h 36m
        2. Length of Day 10h 40m
        3. Tomorrow will be 2 minutes 22 seconds shorter
        1. Moon 6:43 PM 9:14 AM
        2. Waning Gibbous95% of the Moon is Illuminated
        Nov 1
        Waning Half Last Qtr
        Nov 9
        New Moon
        Nov 17
        Waxing Half First Qtr
        Nov 24
        Full Moon
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