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      Elev 633 ft, 41.665 °N 89.940 °W

      Lyndon, IL

      Prophetstown Station67°
      Updated: 10:07 AM CDT on September 18, 2026 (GMT -5)
      7 minutes ago
      74°
      64°
      67
      Feels Like 67
      Cloudy
      N
      12
      Gusts 20 mph
      Lower 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
        Sat 09/19
        High 74°f
         36% Precip. / 0.01 in
        Rain showers this morning with overcast skies during the afternoon hours. High 74F. Winds E at 10 to 15 mph. Chance of rain 40%. Localized flooding is possible.
        Tonight
        Sat 09/19
        Low 65°f
         59% Precip. / 0.3 in
        Showers this evening then scattered thunderstorms developing overnight. Severe thunderstorms expected. Low around 65F. Winds ESE at 5 to 10 mph. Chance of rain 60%.
        Tomorrow
        Sun 09/20
        High 78°f65°f
         56% Precip. / 0.41 in
        Variable clouds with scattered thunderstorms. Severe thunderstorms expected. High 78F. Winds S at 5 to 10 mph. Chance of rain 60%.
        Hourly Forecast
        Now
        67°
        11AM
        69°
        12PM
        46%
        70°
        1PM
        71°
        2PM
        72°
        3PM
        73°
        4PM
        73°
        5PM
        73°
        6PM
        72°
        7PM
        69°
        7:03PM
        Sunset
        8PM
        68°
        9PM
        67°
        10PM
        33%
        66°
        11PM
        38%
        66°
        12AM
        66°
        1AM
        30%
        66°
        2AM
        34%
        66°
        3AM
        41%
        66°
        4AM
        37%
        67°
        5AM
        59%
        67°
        6AM
        59%
        67°
        6:44AM
        Sunrise
        7AM
        56%
        67°
        8AM
        49%
        68°
        9AM
        51%
        69°
        10AM
        56%
        71°
        Precipitation
        59%
        Rain possible around 12:00 PM
        Pollen
        Ragweed Pollen
        Moderate
        Air Quality
        31
        Good
        UV Index
        1
        Low
        Additional Conditions
        1. Pressure 30.24 in
        2. Visibility 10 miles
        3. Clouds Cloudy
        4. Dew Point63°F
        5. Humidity 87%
        6. Rainfall 0.01 in
        7. Snow Depth 0 in
         KSQI Station History
        Almanac for September 18, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 74°F 75°F 94°F 1988
        4. Low 64°F 50°F 30°F 1916
        5. Rain/Snow Depth
        6. Precipitation 0.3 in 3.2 in -
        7. Snow 0 in 0 in -
        Almanac for September 19, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 78°F 74°F 93°F
        4. Low 64°F 50°F 32°F
        Astronomy
        1. Sun Rise Set
        2. Actual Time 6:43 AM 7:03 PM
        3. Civil Twilight 6:15 AM 7:31 PM
        4. Nautical Twilight 5:42 AM 8:04PM
        5. Astronomical Twilight 5:09 AM 8:37 PM
        1. Length of Visible Light 13h 16m
        2. Length of Day 12h 20m
        3. Tomorrow will be 2 minutes 46 seconds shorter
        1. Moon 2:42 PM 11:12 PM
        2. First Quarter49% of the Moon is Illuminated
        Sep 18
        Waxing Half First Qtr
        Sep 26
        Full Moon
        Oct 3
        Waning Half Last Qtr
        Oct 10
        New Moon
        Precipitation
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