White River, SD Weather

Mellette County11:44 PM CDT43.57°N, 100.75°WElevation 2,136 ft

Current conditions

Clear
61°
Clear
Feels like 61°
High 73° Wednesday·Low 46° tonight
WindS 17 mph
Humidity63%
Dew point48°
Pressure30.05 inHg
Visibility10 mi
Cloud cover5%
UV index0 Low
Sunrise8:04 AM
Sunset6:53 PM

Observed at Winner, Bob Wiley Field Airport · 49 min ago

Forecast

10-day
  • Tonight

    Mostly clear. Low around 46, with temperatures rising to around 48 overnight. Southwest wind around 9 mph, with gusts as high as 17 mph.

  • Wednesday

    Sunny. High near 73, with temperatures falling to around 71 in the afternoon. North wind around 7 mph.

  • Wednesday Night

    Mostly clear. Low around 49, with temperatures rising to around 52 overnight. Southeast wind around 7 mph.

National Weather Service forecast updated 3 hrs ago.

  1. Now Clear 59°
  2. Wed12 AM Clear 58°
  3. 1 AM Clear 56°
  4. 2 AM Clear 54°
  5. 3 AM Clear 51°
  6. 4 AM Clear 50°
  7. 5 AM Mostly Clear 48°
  8. 6 AM Sunny 47°
  9. 7 AM Sunny 47°
  10. 8 AM Sunny 47°
  11. 9 AM Sunny 49°
  12. 10 AM Sunny 54°
  13. 11 AM Sunny 58°
  14. 12 PM Sunny 61°
  15. 1 PM Sunny 64°
  16. 2 PM Sunny 67°
  17. 3 PM Mostly Sunny 71°
  18. 4 PM Mostly Sunny 72°
  19. 5 PM Sunny 71°
  20. 6 PM Mostly Clear 67°
  21. 7 PM Clear 63°
  22. 8 PM Clear 60°
  23. 9 PM Clear 57°
  24. 10 PM Mostly Clear 56°

10-day forecast

Details
  1. TonightOct 20 Mostly Clear Mostly Clear46°
  2. WedOct 21 Sunny Sunny49°73°
  3. ThuOct 22 Sunny Sunny12%59°80°
  4. FriOct 23 Partly Sunny then Slight Chance Rain Showers Partly Sunny then Slight Chance Rain Showers29%49°82°
  5. SatOct 24 Slight Chance Light Rain then Mostly Sunny Slight Chance Light Rain then Mostly Sunny17%40°59°
  6. SunOct 25 Slight Chance Light Rain then Sunny Slight Chance Light Rain then Sunny17%38°57°
  7. MonOct 26 Slight Chance Light Rain Slight Chance Light Rain15%37°53°
  8. TueOct 27 Mostly Sunny Mostly Sunny12%58°
  9. WedOct 28 Sunny Sunny30°57°
  10. ThuOct 29 Partly cloudy Partly cloudy39°62°

Days after the National Weather Service's seven are MET Norway's outlook, a computer model with no forecaster's review.

Radar

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Weather news in South Dakota

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Sun & moon

Sunrise 8:04 AM
Sunset 6:53 PM
Daylight 10 h 49 min (−2 min 51 s tomorrow)
Waxing Gibbous · 74% lit
Moonrise 4:19 PM Moonset 1:53 AM
Full moon Oct 26 New moon Nov 9

Forecasters' discussion

From the National Weather Service office in UNR, issued 5 hrs ago

Key Messages

- Warm and dry weather through much of this week.

Discussion

(This Evening Through Tuesday) Issued at 1254 PM MDT Tue Oct 20 2026

Current upper level analysis shows broad ridging over the central and western US with deepening trof off the west coast. The CWA sits under upper level southwest flow and clear skies. Sfc stations report light southerly winds across much of western SD with temperatures in the 60s to low 70s.

Weak front will cross the CWA overnight with the only impacts being a slight drop in tomorrow's highs and a brief period of breezy northwest winds overnight. Upper ridge builds over the region Wednesday into Thursday with southerly return flow supporting warming temps over the area.

Southerly winds pick up early Friday morning as upper level trof approaches with attendant sfc low and trailing cold front crossing the Northern Plains. WAA ahead of the front Friday afternoon will support highs in the upper 70s to low 80s over the western SD plains. As the front crosses the area later Friday evening, winds will shift to the northwest but remain breezy through the night, especially over northwestern SD. Much cooler conditions expected over the weekend with low chances for light precip.

Aviation

(For the 00Z TAFS Through 00Z Wednesday Evening) Issued At 512 PM MDT Tue Oct 20 2026

VFR conditions are expected through the forecast period.

Unr Watches

SD...None. WY...None.

Forecasts, observations and alerts in the United States come from the National Weather Service (NOAA); radar from NOAA's Multi-Radar Multi-Sensor system; satellite imagery from NASA's Global Imagery Browse Services (GIBS) and NOAA's GOES satellites; the map from the U.S. Geological Survey's National Map; air quality from AirNow (EPA and its partners); hurricane information from the National Hurricane Center; climate normals and records from NOAA's Regional Climate Centers (ACIS). Forecasts outside the United States and the UV index: MET Norway (CC BY 4.0); observations outside the U.S.: airport reports via NOAA's Aviation Weather Center. Place names: GeoNames (CC BY 4.0). Data are copied on a schedule and may lag the sources; for warnings that affect your safety, follow your local National Weather Service office and emergency officials. Weather news is drawn from the 4Conservative index and reflects what the press published. Terms of use.