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      Elev 676 ft, 39.887 °N 88.977 °W

      Decatur, IL

      Wed, Sep 30, 2026
      Tomorrow
      Wed 09/30
      High 84°f
      23% Precip. / 0 in
      Cloudy skies. High 84F. Winds S at 5 to 10 mph.
      Tomorrow night
      Wed 09/30
      Low 72°f
      5% Precip. / 0 in
      Cloudy. Low 72F. Winds S at 10 to 15 mph.
      Sunrise 6:51 AM
      Sunset 6:39 PM
      Moonrise 8:48 PM
      Moonset 11:33 AM
      Waning Gibbous, 77% visible
      Hourly Forecast
      12AM
      66°
      1AM
      66°
      2AM
      66°
      3AM
      66°
      4AM
      66°
      5AM
      65°
      6AM
      65°
      6:51AM
      Sunrise
      7AM
      65°
      8AM
      66°
      9AM
      67°
      10AM
      71°
      11AM
      73°
      12PM
      76°
      1PM
      78°
      2PM
      80°
      3PM
      82°
      4PM
      83°
      5PM
      82°
      6PM
      80°
      6:39PM
      Sunset
      7PM
      77°
      8PM
      75°
      9PM
      75°
      10PM
      74°
      11PM
      74°
      Time Conditions Temp. Feels Like Precip Amount Cloud Cover Dew Point Humidity Wind Pressure
      12:00 am
      Partly Cloudy
      66°F 66°F 1% 0in 57% 49°F 54% 7 mph SSE 29.92in
      1:00 am
      Cloudy
      66°F 66°F 0% 0in 99% 49°F 54% 7 mph SSE 29.92in
      2:00 am
      Cloudy
      66°F 66°F 2% 0in 95% 50°F 56% 8 mph S 29.91in
      3:00 am
      Cloudy
      66°F 66°F 2% 0in 90% 50°F 57% 7 mph S 29.91in
      4:00 am
      Cloudy
      66°F 66°F 8% 0in 97% 50°F 57% 8 mph S 29.9in
      5:00 am
      Cloudy
      65°F 65°F 18% 0in 99% 50°F 59% 7 mph S 29.91in
      6:00 am
      Cloudy
      65°F 65°F 22% 0in 98% 51°F 60% 7 mph S 29.92in
      7:00 am
      Cloudy
      65°F 65°F 24% 0in 90% 50°F 60% 6 mph S 29.93in
      8:00 am
      Cloudy
      66°F 66°F 22% 0in 91% 52°F 63% 6 mph S 29.93in
      9:00 am
      Cloudy
      67°F 67°F 1% 0in 95% 52°F 58% 8 mph S 29.94in
      10:00 am
      Cloudy
      71°F 71°F 1% 0in 97% 52°F 52% 8 mph S 29.93in
      11:00 am
      Cloudy
      73°F 73°F 1% 0in 90% 53°F 49% 8 mph SSW 29.93in
      12:00 pm
      Cloudy
      76°F 76°F 0% 0in 83% 53°F 44% 7 mph SSW 29.91in
      1:00 pm
      Cloudy
      78°F 78°F 0% 0in 93% 54°F 44% 7 mph SSW 29.9in
      2:00 pm
      Cloudy
      80°F 80°F 0% 0in 85% 54°F 41% 6 mph SSW 29.88in
      3:00 pm
      Cloudy
      82°F 82°F 0% 0in 96% 54°F 38% 8 mph SSW 29.87in
      4:00 pm
      Cloudy
      83°F 83°F 1% 0in 89% 54°F 37% 6 mph SSW 29.86in
      5:00 pm
      Mostly Cloudy
      82°F 82°F 0% 0in 78% 56°F 41% 6 mph S 29.85in
      6:00 pm
      Mostly Cloudy
      80°F 81°F 0% 0in 71% 58°F 48% 6 mph SSE 29.85in
      7:00 pm
      Mostly Cloudy
      77°F 77°F 1% 0in 74% 59°F 55% 5 mph SSE 29.85in
      8:00 pm
      Mostly Cloudy
      75°F 75°F 1% 0in 75% 60°F 60% 5 mph SSE 29.86in
      9:00 pm
      Mostly Cloudy
      75°F 75°F 1% 0in 78% 60°F 60% 7 mph SSE 29.86in
      10:00 pm
      Mostly Cloudy
      74°F 74°F 1% 0in 78% 60°F 62% 6 mph S 29.86in
      11:00 pm
      Cloudy
      74°F 74°F 1% 0in 92% 59°F 60% 8 mph S 29.86in
      Additional Conditions
      1. Pressure 29.93 in
      2. Visibility 10 miles
      3. Clouds Clear
      4. Dew Point50°F
      5. Humidity 53%
      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 85°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 84°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
      Temp
      Windchill
      Heat Index
      Dew Point
      Humidity
      Wind
      Precip.
      Elev.
      Updated
      Loading nearby stations…
      Level Access
      Glossary