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      Elev 558 ft, 40.205 °N 89.679 °W

      Mason City, IL

      Mason City Station87°
      Updated: 1:02 PM CDT on September 16, 2026 (GMT -5)
      8 minutes ago
      83°
      69°
      87
      Feels Like 97
      Partly Cloudy
      N
      2
      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
        Thu 09/17
        High 83°f
         15% Precip. / 0 in
        Mostly cloudy. Slight chance of a rain shower. High 83F. Winds light and variable.
        Tonight
        Thu 09/17
        Low 72°f
         24% Precip. / 0 in
        Some clouds. Low 72F. Winds light and variable.
        Tomorrow
        Fri 09/18
        High 89°f70°f
         24% Precip. / 0 in
        Mostly cloudy skies early, then partly cloudy in the afternoon. Slight chance of a rain shower. High 89F. Winds light and variable.
        Hourly Forecast
        Now
        81°
        2PM
        82°
        3PM
        83°
        4PM
        83°
        5PM
        83°
        6PM
        81°
        7PM
        79°
        7:05PM
        Sunset
        8PM
        77°
        9PM
        75°
        10PM
        74°
        11PM
        74°
        12AM
        73°
        1AM
        73°
        2AM
        73°
        3AM
        73°
        4AM
        73°
        5AM
        73°
        6AM
        73°
        6:42AM
        Sunrise
        7AM
        73°
        8AM
        75°
        9AM
        77°
        10AM
        79°
        11AM
        80°
        12PM
        83°
        1PM
        85°
        Precipitation
        24%
        Pollen
        Ragweed Pollen
        High
        Air Quality
        29
        Good
        UV Index
        5
        Moderate
        Additional Conditions
        1. Pressure 30.23 in
        2. Visibility 10 miles
        3. Clouds Partly Cloudy
        4. Dew Point73°F
        5. Humidity 78%
        6. Rainfall 1.36 in
        7. Snow Depth 0 in
         KAAA Station History
        Almanac for September 16, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 83°F 79°F 91°F 1997
        4. Low 69°F 54°F 37°F 1984
        5. Rain/Snow Depth
        6. Precipitation 0 in 3.2 in -
        7. Snow 0 in 0 in -
        Almanac for September 17, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 89°F 79°F 94°F
        4. Low 69°F 53°F 40°F
        Astronomy
        1. Sun Rise Set
        2. Actual Time 6:40 AM 7:05 PM
        3. Civil Twilight 6:13 AM 7:32 PM
        4. Nautical Twilight 5:41 AM 8:04PM
        5. Astronomical Twilight 5:08 AM 8:37 PM
        1. Length of Visible Light 13h 19m
        2. Length of Day 12h 24m
        3. Tomorrow will be 2 minutes 37 seconds shorter
        1. Moon 12:39 PM 9:43 PM
        2. Waxing Crescent30% 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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