Winner, SD 57580 Weather

Tripp County8:40 PM CDT43.33°N, 99.80°W

Current conditions

Clear
59°
Clear
Feels like 59°
High 78° Thursday·Low 48° tonight
WindE 3 mph
Humidity72%
Dew point50°
Pressure30.20 inHg
Visibility10 mi
Cloud cover11%
UV index0 Low
Sunrise8:01 AM
Sunset6:48 PM

Observed at Winner, Bob Wiley Field Airport · 55 min ago

Forecast

10-day

  • Tonight

    Mostly clear. Low around 48, with temperatures rising to around 50 overnight. Southeast wind 5 to 8 mph.

  • Thursday

    Sunny, with a high near 78. South wind 8 to 18 mph, with gusts as high as 28 mph.

  • Thursday Night

    Partly cloudy, with a low around 60. South wind 16 to 22 mph, with gusts as high as 32 mph.

National Weather Service forecast updated 1 hr ago.

Hourly

Hourly forecast
  1. Now Mostly Clear 60°
  2. 9 PM Mostly Clear 57°
  3. 10 PM Clear 55°
  4. 11 PM Clear 54°
  5. Thu12 AM Mostly Clear 53°
  6. 1 AM Clear 52°
  7. 2 AM Clear 51°
  8. 3 AM Clear 51°
  9. 4 AM Mostly Clear 50°
  10. 5 AM Mostly Clear 50°
  11. 6 AM Sunny 50°
  12. 7 AM Mostly Sunny 49°
  13. 8 AM Mostly Sunny 48°
  14. 9 AM Sunny 51°
  15. 10 AM Sunny 57°
  16. 11 AM Sunny 63°
  17. 12 PM Sunny 68°
  18. 1 PM Sunny 72°
  19. 2 PM Mostly Sunny 75°
  20. 3 PM Sunny 77°
  21. 4 PM Mostly Sunny 77°
  22. 5 PM Mostly Sunny 77°
  23. 6 PM Partly Cloudy 74°
  24. 7 PM Partly Cloudy 71°

10-day forecast

Details
  1. TonightOct 21 Mostly Clear Mostly Clear48°
  2. ThuOct 22 Sunny Sunny60°78°
  3. FriOct 23 Mostly Sunny Mostly Sunny19%52°82°
  4. SatOct 24 Chance Light Rain Chance Light Rain55%40°60°
  5. SunOct 25 Light Rain Likely Light Rain Likely71%36°50°
  6. MonOct 26 Light Rain Likely Light Rain Likely69%34°47°
  7. TueOct 27 Slight Chance Light Rain then Partly Sunny Slight Chance Light Rain then Partly Sunny22%39°54°
  8. WedOct 28 Mostly Sunny then Slight Chance Light Rain Mostly Sunny then Slight Chance Light Rain15%59°
  9. ThuOct 29 Sunny Sunny0.03 in37°51°
  10. FriOct 30 Mostly sunny Mostly sunny36°59°

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

Radar

Full map
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Weather news near Winner

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Sun & moon

Sunrise 8:01 AM
Sunset 6:48 PM
Daylight 10 h 47 min (−2 min 48 s tomorrow)
Waxing Gibbous · 81% lit
Moonrise 4:36 PM Moonset 2:57 AM
Full moon Oct 26 New moon Nov 9

Almanac

Monthly
Normal high / low62° / 36°
Record high93° (1947)
Record low15° (1930)
Wettest0.70 in (1953)
Month to date0.50 in (normal 1.35 in)

Winner, records since 1910. Normals 1991–2020. Data from NOAA's Regional Climate Centers (ACIS).

Forecasters' discussion

From the National Weather Service office in UNR, issued 8 hrs ago

Key Messages

- Warm and dry weather through much of this week.

Update

Issued at 1058 PM MDT Tue Oct 20 2026

No major changes to the forecast this evening. Surface analysis shows a weak cold front crossing NW SD at this time. Across SW SD, temps are in the mid to upper 50s while over NW SD into portions of NE WY temps are dropping into the upper 40s. NW winds will continue overnight into Wed morning, then return flow sets up as the surface high pushes east of the CWA Wed afternoon. Max temps on Wed will be in the 60s to low 70s...but then a decent overnight LLJ/warm air advection will push highs on Thursday well above average (upper 70s to possibly mid 80s over the western SD plains).

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 18Z TAFS Through 18Z Thursday) Issued At 1124 AM MDT Wed Oct 21 2026

VFR conditions are expected through the forecast period.

Main aviation changes will be centered around winds but overall concerns are low. Increased wind speeds, upwards of 10 to 20 kts, are likely through the tonight for NE WY and NW SD before a lull in speeds Thursday morning. Wind speeds increase again, up to 10 to 15 kts, for most of the area for Thursday afternoon.

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.