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      Elev 1099 ft, 42.518 °N 96.571 °W

      Jefferson, SD

      Jefferson Station70°
      Updated: 11:45 AM CDT on September 17, 2026 (GMT -5)
      33 seconds ago
      74°
      62°
      70
      Feels Like 71
      Cloudy
      N
      5
      Higher 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
        Fri 09/18
        High 74°f
         16% Precip. / 0 in
        Cloudy skies this morning will become partly cloudy this afternoon. Slight chance of a rain shower. High 74F. Winds ENE at 5 to 10 mph.
        Tonight
        Fri 09/18
        Low 65°f
         89% Precip. / 0.28 in
        Rain this evening with thunderstorms developing overnight. Low near 65F. Winds E at 10 to 15 mph. Chance of rain 90%. Locally heavy rainfall possible.
        Tomorrow
        Sat 09/19
        High 81°f63°f
         42% Precip. / 0.02 in
        Rain showers early with some sunshine later in the day. High 81F. Winds SE at 10 to 20 mph. Chance of rain 40%.
        Hourly Forecast
        Now
        70°
        12PM
        70°
        1PM
        71°
        2PM
        72°
        3PM
        73°
        4PM
        74°
        5PM
        74°
        6PM
        73°
        7PM
        72°
        7:31PM
        Sunset
        8PM
        70°
        9PM
        68°
        10PM
        68°
        11PM
        31%
        67°
        12AM
        67%
        67°
        1AM
        89%
        67°
        2AM
        72%
        67°
        3AM
        62%
        66°
        4AM
        44%
        67°
        5AM
        42%
        67°
        6AM
        54%
        67°
        7AM
        42%
        67°
        7:09AM
        Sunrise
        8AM
        34%
        67°
        9AM
        68°
        10AM
        70°
        11AM
        72°
        Precipitation
        89%
        Pollen
        Ragweed Pollen
        Moderate
        Air Quality
        37
        Good
        UV Index
        1
        Low
        Additional Conditions
        1. Pressure 30.22 in
        2. Visibility 10 miles
        3. Clouds Cloudy
        4. Dew Point65°F
        5. Humidity 84%
        6. Rainfall 0.01 in
        7. Snow Depth 0 in
         KSUX Station History
        Almanac for September 17, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 74°F 77°F 103°F 1895
        4. Low 62°F 51°F 33°F 1980
        5. Rain/Snow Depth
        6. Precipitation 0.28 in 3.2 in -
        7. Snow 0 in 0 in -
        Almanac for September 18, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 81°F 76°F 101°F
        4. Low 62°F 50°F 30°F
        Astronomy
        1. Sun Rise Set
        2. Actual Time 7:08 AM 7:32 PM
        3. Civil Twilight 6:40 AM 8:00 PM
        4. Nautical Twilight 6:06 AM 8:33PM
        5. Astronomical Twilight 5:32 AM 9:07 PM
        1. Length of Visible Light 13h 20m
        2. Length of Day 12h 23m
        3. Tomorrow will be 2 minutes 51 seconds shorter
        1. Moon 2:18 PM 10:45 PM
        2. Waxing Crescent40% 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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