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      Elev 203 ft, 40.043 °N 87.830 °W

      Fairmount, IL

      Fairmount Station85°
      Updated: 9:30 AM CDT on September 17, 2026 (GMT -5)
      5 minutes ago
      92°
      69°
      85
      Feels Like 93
      Partly Cloudy
      N
      8
      Similar 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 92°f
         15% Precip. / 0 in
        A mix of clouds and sun. Slight chance of a rain shower. High 92F. Winds W at 5 to 10 mph.
        Tonight
        Thu 09/17
        Low 68°f
         59% Precip. / 0.25 in
        Partly cloudy this evening with thunderstorms becoming likely overnight. Low 68F. Winds light and variable. Chance of rain 60%.
        Tomorrow
        Fri 09/18
        High 81°f67°f
         24% Precip. / 0 in
        Cloudy. High 81F. Winds NE at 5 to 10 mph.
        Hourly Forecast
        Now
        82°
        10AM
        83°
        11AM
        85°
        12PM
        87°
        1PM
        88°
        2PM
        90°
        3PM
        91°
        4PM
        90°
        5PM
        90°
        6PM
        88°
        6:56PM
        Sunset
        7PM
        83°
        8PM
        79°
        9PM
        77°
        10PM
        75°
        11PM
        74°
        12AM
        73°
        1AM
        60%
        72°
        2AM
        59%
        71°
        3AM
        34%
        70°
        4AM
        70°
        5AM
        69°
        6AM
        69°
        6:35AM
        Sunrise
        7AM
        69°
        8AM
        70°
        9AM
        73°
        Precipitation
        60%
        Pollen
        Ragweed Pollen
        High
        Air Quality
        69
        Moderate
        UV Index
        3
        Moderate
        Additional Conditions
        1. Pressure 30.2 in
        2. Visibility 10 miles
        3. Clouds Partly Cloudy
        4. Dew Point71°F
        5. Humidity 70%
        6. Rainfall 0 in
        7. Snow Depth 0 in
         KDNV Station History
        Almanac for September 17, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 92°F 79°F 93°F 1955
        4. Low 69°F 55°F 32°F 1937
        5. Rain/Snow Depth
        6. Precipitation 0.25 in - in -
        7. Snow 0 in - in -
        Almanac for September 18, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 81°F 79°F 95°F
        4. Low 69°F 55°F 34°F
        Astronomy
        1. Sun Rise Set
        2. Actual Time 6:34 AM 6:56 PM
        3. Civil Twilight 6:07 AM 7:23 PM
        4. Nautical Twilight 5:35 AM 7:55PM
        5. Astronomical Twilight 5:02 AM 8:28 PM
        1. Length of Visible Light 13h 16m
        2. Length of Day 12h 22m
        3. Tomorrow will be 2 minutes 37 seconds shorter
        1. Moon 1:31 PM 10:20 PM
        2. Waxing Crescent39% 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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