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      Flood Watch
      until 7:00 AM CDT
      +1 more alert
      Elev 633 ft, 41.665 °N 89.940 °W

      Lyndon, IL

      Prophetstown Station68°
      Updated: 11:47 AM CDT on September 19, 2026 (GMT -5)
      6 minutes ago
      79°
      64°
      68
      Feels Like 68
      Rain
      N
      8
      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 79°f
         100% Precip. / 0.28 in
        Rain and scattered thunderstorms for the afternoon. Storms may contain strong gusty winds. High 79F. Winds S at 5 to 10 mph. Chance of rain 100%.
        Tonight
        Sun 09/20
        Low 65°f
         86% Precip. / 1.17 in
        Thunderstorms likely. Storms may contain strong gusty winds. Low around 65F. Winds NNE at 5 to 10 mph. Chance of rain 90%. Rainfall possibly over one inch.
        Tomorrow
        Mon 09/21
        High 67°f58°f
         63% Precip. / 0.15 in
        Rain early...then remaining cloudy with showers in the afternoon. High 67F. Winds NE at 10 to 20 mph. Chance of rain 60%.
        Hourly Forecast
        Now
        68°
        12PM
        100%
        69°
        1PM
        82%
        71°
        2PM
        34%
        72°
        3PM
        63%
        77°
        4PM
        58%
        77°
        5PM
        58%
        77°
        6PM
        45%
        76°
        7PM
        57%
        74°
        7:01PM
        Sunset
        8PM
        65%
        73°
        9PM
        57%
        72°
        10PM
        53%
        71°
        11PM
        62%
        71°
        12AM
        70%
        71°
        1AM
        86%
        70°
        2AM
        83%
        70°
        3AM
        86%
        69°
        4AM
        85%
        69°
        5AM
        79%
        68°
        6AM
        62%
        66°
        6:45AM
        Sunrise
        7AM
        61%
        66°
        8AM
        43%
        66°
        9AM
        56%
        67°
        10AM
        64%
        67°
        11AM
        63%
        67°
        Precipitation
        100%
        Thunderstorms likely to continue
        Pollen
        Ragweed Pollen
        Low
        Air Quality
        19
        Good
        UV Index
        1
        Low
        Additional Conditions
        1. Pressure 29.91 in
        2. Visibility 7 miles
        3. Clouds Cloudy
        4. Dew Point67°F
        5. Humidity 97%
        6. Rainfall 1.81 in
        7. Snow Depth 0 in
         KSQI Station History
        Almanac for September 19, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 79°F 74°F 93°F 1948
        4. Low 64°F 50°F 32°F 1901
        5. Rain/Snow Depth
        6. Precipitation 1.45 in 3.2 in -
        7. Snow 0 in 0 in -
        Almanac for September 20, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 71°F 74°F 94°F
        4. Low 64°F 50°F 29°F
        Astronomy
        1. Sun Rise Set
        2. Actual Time 6:44 AM 7:01 PM
        3. Civil Twilight 6:16 AM 7:29 PM
        4. Nautical Twilight 5:43 AM 8:02PM
        5. Astronomical Twilight 5:10 AM 8:35 PM
        1. Length of Visible Light 13h 13m
        2. Length of Day 12h 17m
        3. Tomorrow will be 2 minutes 47 seconds shorter
        1. Moon 3:29 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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