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      Elev 560 ft, 45.771 °N 99.626 °W

      Eureka, SD

      Updated: 5:20 AM CDT on September 9, 2026 (GMT -5)
      3 minutes ago
      77°
      54°
      59
      Feels Like 59
      Partly Cloudy
      N
      11
      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
        Thu 09/10
        High 77°f
        13% Precip. / 0 in
        Plentiful sunshine. High 77F. Winds WNW at 10 to 20 mph.
        Tonight
        Thu 09/10
        Low 48°f
        3% Precip. / 0 in
        Clear skies. Low 48F. Winds SSE at 5 to 10 mph.
        Tomorrow
        Fri 09/11
        High 87°f56°f
        2% Precip. / 0 in
        Sunny skies. Warm. High 87F. Winds SSW at 10 to 15 mph.
        Hourly Forecast
        Now
        60°
        6AM
        59°
        7AM
        58°
        7:09AM
        Sunrise
        8AM
        58°
        9AM
        59°
        10AM
        62°
        11AM
        66°
        12PM
        69°
        1PM
        71°
        2PM
        73°
        3PM
        74°
        4PM
        75°
        5PM
        76°
        6PM
        75°
        7PM
        73°
        8PM
        67°
        8:01PM
        Sunset
        9PM
        62°
        10PM
        59°
        11PM
        57°
        12AM
        56°
        1AM
        55°
        2AM
        53°
        3AM
        52°
        4AM
        51°
        5AM
        50°
        Additional Conditions
        1. Pressure 30.06 in
        2. Visibility 10 miles
        3. Clouds Partly Cloudy
        4. Dew Point51°F
        5. Humidity 73%
        6. Rainfall 0.03 in
        7. Snow Depth 0 in
        KASY Station History
        Almanac for September 9, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 77°F 75°F 100°F 1931
        4. Low 54°F 49°F 28°F 2020
        5. Rain/Snow Depth
        6. Precipitation 0 in 3.4 in -
        7. Snow 0 in 0 in -
        Almanac for September 10, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 87°F 75°F 100°F
        4. Low 54°F 48°F 27°F
        Astronomy
        1. Sun Rise Set
        2. Actual Time 7:09 AM 8:01 PM
        3. Civil Twilight 6:39 AM 8:31 PM
        4. Nautical Twilight 6:03 AM 9:07PM
        5. Astronomical Twilight 5:25 AM 9:44 PM
        1. Length of Visible Light 13h 51m
        2. Length of Day 12h 51m
        3. Tomorrow will be 3 minutes 10 seconds shorter
        1. Moon 5:15 AM 7:22 PM
        2. Waning Crescent3% of the Moon is Illuminated
        Sep 10
        New Moon
        Sep 18
        Waxing Half First Qtr
        Sep 26
        Full Moon
        Oct 3
        Waning Half Last Qtr
        Precipitation
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        Weather Alerts
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