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      Elev 426 ft, 44.072 °N 99.448 °W

      Fort Thompson, SD

      Fort Thompson Station83°
      Updated: 3:14 PM CDT on September 17, 2026 (GMT -5)
      6 minutes ago
      77°
      52°
      83
      Feels Like 91
      Partly Cloudy
      N
      12
      Gusts 16 mph
      Lower 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
        Fri 09/18
        Low 61°f
         99% Precip. / 1.54 in
        Thunderstorms likely. Rainfall will be locally heavy at times. Low 61F. Winds ESE at 10 to 20 mph. Chance of rain 100%. 1 to 2 inches of rain expected. Localized flooding is possible.
        Tomorrow
        Sat 09/19
        High 66°f
         60% Precip. / 0.04 in
        Rain showers early with overcast skies later in the day. High 66F. Winds ENE at 10 to 15 mph. Chance of rain 60%.
        Tomorrow night
        Sat 09/19
        Low 57°f
         24% Precip. / 0 in
        Cloudy skies. Low 57F. Winds NNE at 5 to 10 mph.
        Hourly Forecast
        Now
        75°
        4PM
        75°
        5PM
        75°
        6PM
        73°
        7PM
        70°
        7:44PM
        Sunset
        8PM
        68°
        9PM
        67°
        10PM
        46%
        66°
        11PM
        73%
        65°
        12AM
        96%
        64°
        1AM
        100%
        63°
        2AM
        92%
        63°
        3AM
        92%
        63°
        4AM
        97%
        63°
        5AM
        73%
        63°
        6AM
        46%
        63°
        7AM
        60%
        63°
        7:20AM
        Sunrise
        8AM
        41%
        62°
        9AM
        47%
        62°
        10AM
        51%
        63°
        11AM
        63°
        12PM
        64°
        1PM
        65°
        2PM
        65°
        3PM
        66°
        Precipitation
        100%
        Pollen
        None
        Air Quality
        22
        Good
        UV Index
        3
        Moderate
        Additional Conditions
        1. Pressure 30.16 in
        2. Visibility 10 miles
        3. Clouds Partly Cloudy
        4. Dew Point61°F
        5. Humidity 61%
        6. Rainfall 0 in
        7. Snow Depth 0 in
         K9V9 Station History
        Almanac for September 17, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 77°F 76°F 96°F 1988
        4. Low 52°F 47°F 29°F 1981
        5. Rain/Snow Depth
        6. Precipitation 1.54 in 3.2 in -
        7. Snow 0 in 0 in -
        Almanac for September 18, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 66°F 76°F 97°F
        4. Low 52°F 46°F 31°F
        Astronomy
        1. Sun Rise Set
        2. Actual Time 7:19 AM 7:44 PM
        3. Civil Twilight 6:50 AM 8:13 PM
        4. Nautical Twilight 6:16 AM 8:47PM
        5. Astronomical Twilight 5:40 AM 9:22 PM
        1. Length of Visible Light 13h 22m
        2. Length of Day 12h 24m
        3. Tomorrow will be 2 minutes 59 seconds shorter
        1. Moon 2:37 PM 10:49 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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