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      River Flood Warning
      until 9:00 PM CDT
      Elev 200 ft, 41.766 °N 89.695 °W

      Rock Falls, IL

      Rock Falls Station57°
      Updated: 10:41 PM CDT on September 21, 2026 (GMT -5)
      8 minutes ago
      65°
      56°
      57
      Feels Like 57
      Cloudy
      N
      12
      Gusts 21 mph
      Similar 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
        Mon 09/21
        Low 54°f
         38% Precip. / 0.01 in
        Cloudy skies early, then off and on rain showers overnight. Low 54F. Winds NE at 10 to 15 mph. Chance of rain 40%.
        Tomorrow
        Tue 09/22
        High 64°f
         24% Precip. / 0 in
        Overcast. Slight chance of a rain shower. High 64F. Winds NE at 10 to 15 mph.
        Tomorrow night
        Tue 09/22
        Low 52°f
         6% Precip. / 0 in
        Partly cloudy skies during the evening will give way to cloudy skies overnight. Low 52F. Winds NE at 5 to 10 mph.
        Hourly Forecast
        Now
        57°
        11PM
        57°
        12AM
        57°
        1AM
        57°
        2AM
        57°
        3AM
        57°
        4AM
        57°
        5AM
        56°
        6AM
        38%
        55°
        6:46AM
        Sunrise
        7AM
        55°
        8AM
        55°
        9AM
        57°
        10AM
        35%
        58°
        11AM
        60°
        12PM
        62°
        1PM
        62°
        2PM
        63°
        3PM
        63°
        4PM
        63°
        5PM
        62°
        6PM
        61°
        6:55PM
        Sunset
        7PM
        58°
        8PM
        56°
        9PM
        55°
        10PM
        55°
        Precipitation
        38%
        Pollen
        Ragweed Pollen
        Moderate
        Air Quality
        20
        Good
        UV Index
        0
        Low
        Additional Conditions
        1. Pressure 30.17 in
        2. Visibility 10 miles
        3. Clouds Cloudy
        4. Dew Point53°F
        5. Humidity 86%
        6. Rainfall 0.02 in
        7. Snow Depth 0 in
         KSQI Station History
        Almanac for September 22, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 65°F 73°F 93°F 1937
        4. Low 56°F 51°F 32°F 1974
        5. Rain/Snow Depth
        6. Precipitation 0.01 in 3.1 in -
        7. Snow 0 in 0 in -
        Almanac for September 23, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 64°F 73°F 93°F
        4. Low 56°F 51°F 29°F
        Astronomy
        1. Sun Rise Set
        2. Actual Time 6:46 AM 6:55 PM
        3. Civil Twilight 6:18 AM 7:23 PM
        4. Nautical Twilight 5:45 AM 7:56PM
        5. Astronomical Twilight 5:12 AM 8:29 PM
        1. Length of Visible Light 13h 5m
        2. Length of Day 12h 9m
        3. Tomorrow will be 2 minutes 47 seconds shorter
        1. Moon 5:08 PM 2:15 AM
        2. Waxing Gibbous85% 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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