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      Elev 676 ft, 39.887 °N 88.977 °W

      Decatur, IL

      Tue, Sep 29, 2026
      Tonight
      Tue 09/29
      Low 64°f
      18% Precip. / 0 in
      Partly cloudy skies early will give way to cloudy skies late. Low 64F. Winds S at 5 to 10 mph.
      Tomorrow
      Wed 09/30
      High 85°f
      13% Precip. / 0 in
      Cloudy. High around 85F. Winds S at 5 to 10 mph.
      Sunrise 6:50 AM
      Sunset 6:41 PM
      Moonrise 8:05 PM
      Moonset 10:17 AM
      Waning Gibbous, 86% visible
      Hourly Forecast
      Now
      69°
      9PM
      68°
      10PM
      67°
      11PM
      66°
      12AM
      66°
      1AM
      66°
      2AM
      66°
      3AM
      66°
      4AM
      65°
      5AM
      65°
      6AM
      65°
      6:51AM
      Sunrise
      7AM
      65°
      8AM
      65°
      9AM
      67°
      10AM
      70°
      11AM
      72°
      12PM
      75°
      1PM
      77°
      2PM
      80°
      3PM
      82°
      4PM
      83°
      5PM
      82°
      6PM
      80°
      6:39PM
      Sunset
      7PM
      77°
      8PM
      75°
      Time Conditions Temp. Feels Like Precip Amount Cloud Cover Dew Point Humidity Wind Pressure
      9:00 pm
      Mostly Clear
      68°F 68°F 0% 0in 21% 50°F 52% 5 mph SSE 29.93in
      10:00 pm
      Partly Cloudy
      67°F 67°F 1% 0in 38% 50°F 54% 6 mph SSE 29.94in
      11:00 pm
      Cloudy
      66°F 66°F 1% 0in 80% 49°F 55% 6 mph SSE 29.93in
      Additional Conditions
      1. Pressure 29.93 in
      2. Visibility 10 miles
      3. Clouds Clear
      4. Dew Point50°F
      5. Humidity 50%
      6. Rainfall 0 in
      7. Snow Depth 0 in
      KDEC Station History
      Almanac for September 29, 2026
      1. Forecast Average Record
      2. Temperature
      3. High 84°F 73°F 100°F 1953
      4. Low 48°F 52°F 28°F 1899
      5. Rain/Snow Depth
      6. Precipitation 0 in 2.9 in -
      7. Snow 0 in 0 in -
      Almanac for September 30, 2026
      1. Forecast Average Record
      2. Temperature
      3. High 85°F 73°F 94°F
      4. Low 64°F 52°F 20°F
      Astronomy
      1. Sun Rise Set
      2. Actual Time 6:50 AM 6:41 PM
      3. Civil Twilight 6:23 AM 7:08 PM
      4. Nautical Twilight 5:51 AM 7:39PM
      5. Astronomical Twilight 5:20 AM 8:11 PM
      1. Length of Visible Light 12h 44m
      2. Length of Day 11h 51m
      3. Tomorrow will be 2 minutes 36 seconds shorter
      1. Moon 8:05 PM 10:17 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
      Nearby Weather Stations
      Station Location
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      Windchill
      Heat Index
      Dew Point
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      Wind
      Precip.
      Elev.
      Updated
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      Glossary