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      Heat Advisory
      until 8:00 PM CDT
      Elev 180 ft, 38.902 °N 89.363 °W

      Smithboro, IL

      Greenville Station89°
      Updated: 6:49 PM CDT on September 19, 2026 (GMT -5)
      3 minutes ago
      100°
      72°
      89
      Feels Like 93
      Fair
      N
      1
      Lower 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
        Tonight
        Sat 09/19
        Low 70°f
         2% Precip. / 0 in
        A few clouds. Low around 70F. Winds light and variable.
        Tomorrow
        Sun 09/20
        High 92°f
         12% Precip. / 0 in
        Intervals of clouds and sunshine in the morning with more clouds for later in the day. High 92F. Winds WNW at 5 to 10 mph.
        Tomorrow night
        Sun 09/20
        Low 66°f
         45% Precip. / 0.22 in
        Scattered thunderstorms. Low 66F. Winds NNE at 5 to 10 mph. Chance of rain 50%.
        Hourly Forecast
        Now
        89°
        6:59PM
        Sunset
        7PM
        88°
        8PM
        84°
        9PM
        81°
        10PM
        79°
        11PM
        78°
        12AM
        77°
        1AM
        76°
        2AM
        75°
        3AM
        74°
        4AM
        73°
        5AM
        72°
        6AM
        71°
        6:43AM
        Sunrise
        7AM
        71°
        8AM
        74°
        9AM
        78°
        10AM
        83°
        11AM
        86°
        12PM
        88°
        1PM
        89°
        2PM
        90°
        3PM
        90°
        4PM
        91°
        5PM
        90°
        6PM
        87°
        Precipitation
        12%
        Pollen
        Ragweed Pollen
        High
        Air Quality
        57
        Moderate
        UV Index
        0
        Low
        Additional Conditions
        1. Pressure 29.85 in
        2. Visibility 10 miles
        3. Clouds Partly Cloudy
        4. Dew Point69°F
        5. Humidity 52%
        6. Rainfall 0 in
        7. Snow Depth 0 in
         KGRE Station History
        Almanac for September 19, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 100°F 79°F 95°F 1983
        4. Low 72°F 54°F 28°F 1901
        5. Rain/Snow Depth
        6. Precipitation 0 in - in -
        7. Snow 0 in - in -
        Almanac for September 20, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 92°F 78°F 93°F
        4. Low 72°F 54°F 35°F
        Astronomy
        1. Sun Rise Set
        2. Actual Time 6:42 AM 6:59 PM
        3. Civil Twilight 6:15 AM 7:25 PM
        4. Nautical Twilight 5:44 AM 7:56PM
        5. Astronomical Twilight 5:12 AM 8:28 PM
        1. Length of Visible Light 13h 9m
        2. Length of Day 12h 16m
        3. Tomorrow will be 2 minutes 31 seconds shorter
        1. Moon 3:15 PM -
        2. Waxing Gibbous59% of the Moon is Illuminated
        Sep 26
        Full Moon
        Oct 3
        Waning Half Last Qtr
        Oct 10
        New Moon
        Oct 18
        Waxing Half First Qtr
        Precipitation
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