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      Flood Watch
      until 7:00 AM CDT
      Elev 568 ft, 41.611 °N 90.335 °W

      Port Byron, IL

      Port Byron Station66°
      Updated: 8:48 AM CDT on September 19, 2026 (GMT -5)
      10 minutes ago
      80°
      65°
      66
      Feels Like 66
      Rain
      N
      14
      Gusts 22 mph
      Higher temperature is expected today
      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
        Sun 09/20
        High 80°f
         81% Precip. / 0.02 in
        Mixed clouds and sun with scattered thunderstorms. Storms may contain strong gusty winds. High near 80F. Winds SSE at 10 to 15 mph. Chance of rain 80%.
        Tonight
        Sun 09/20
        Low 66°f
         82% Precip. / 0.94 in
        Thunderstorms. Storms may contain strong gusty winds. Low 66F. Winds NNE at 5 to 10 mph. Chance of rain 80%. Rainfall near an inch.
        Tomorrow
        Mon 09/21
        High 67°f58°f
         78% Precip. / 0.44 in
        A steady rain in the morning. Showers continuing in the afternoon. High 67F. Winds NE at 10 to 20 mph. Chance of rain 80%. Rainfall around a half an inch.
        Hourly Forecast
        Now
        67°
        9AM
        59%
        67°
        10AM
        56%
        70°
        11AM
        41%
        71°
        12PM
        49%
        74°
        1PM
        76°
        2PM
        77°
        3PM
        78°
        4PM
        78°
        5PM
        78°
        6PM
        37%
        77°
        7PM
        39%
        75°
        7:03PM
        Sunset
        8PM
        48%
        73°
        9PM
        44%
        72°
        10PM
        41%
        72°
        11PM
        61%
        72°
        12AM
        71%
        71°
        1AM
        64%
        71°
        2AM
        61%
        70°
        3AM
        68%
        69°
        4AM
        81%
        69°
        5AM
        80%
        68°
        6AM
        82%
        67°
        6:47AM
        Sunrise
        7AM
        51%
        67°
        8AM
        66%
        67°
        Precipitation
        82%
        Storms continuing through 1 PM
        Pollen
        Ragweed Pollen
        Moderate
        Air Quality
        38
        Good
        UV Index
        1
        Low
        Additional Conditions
        1. Pressure 29.93 in
        2. Visibility 7 miles
        3. Clouds Cloudy
        4. Dew Point66°F
        5. Humidity 97%
        6. Rainfall 1.22 in
        7. Snow Depth 0 in
         KDVN Station History
        Almanac for September 19, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 80°F 76°F 90°F 2016
        4. Low 65°F 55°F 36°F 1991
        5. Rain/Snow Depth
        6. Precipitation 0.96 in - in -
        7. Snow 0 in - in -
        Almanac for September 20, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 72°F 75°F 91°F
        4. Low 65°F 54°F 36°F
        Astronomy
        1. Sun Rise Set
        2. Actual Time 6:45 AM 7:03 PM
        3. Civil Twilight 6:18 AM 7:31 PM
        4. Nautical Twilight 5:45 AM 8:03PM
        5. Astronomical Twilight 5:12 AM 8:37 PM
        1. Length of Visible Light 13h 13m
        2. Length of Day 12h 17m
        3. Tomorrow will be 2 minutes 45 seconds shorter
        1. Moon 3:30 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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