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Winner, SD 57580 Weather
Current conditions
Observed at Winner, Bob Wiley Field Airport · 1 hr ago
Forecast
10-day-
Tonight
Mostly clear. Low around 48, with temperatures rising to around 50 overnight. South wind 9 to 14 mph, with gusts as high as 22 mph.
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Wednesday
Mostly sunny, with a high near 71. North wind around 8 mph.
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Wednesday Night
Mostly clear, with a low around 49. Southeast wind 6 to 9 mph.
National Weather Service forecast updated 12 hrs ago.
Hourly
Hourly forecast- Now64°
- 8 PM61°
- 9 PM57°
- 10 PM56°
- 11 PM55°
- Wed12 AM55°
- 1 AM54°
- 2 AM53°
- 3 AM52°
- 4 AM52°
- 5 AM50°
- 6 AM49°
- 7 AM48°
- 8 AM48°
- 9 AM49°
- 10 AM52°
- 11 AM58°
- 12 PM62°
- 1 PM66°
- 2 PM69°
- 3 PM70°
- 4 PM71°
- 5 PM70°
- 6 PM69°
10-day forecast
Details- TodayOct 20Sunny48°70°
- WedOct 21Mostly Sunny49°71°
- ThuOct 22Sunny58°77°
- FriOct 23Partly Sunny36%51°78°
- SatOct 24Slight Chance Light Rain26%40°59°
- SunOct 25Slight Chance Light Rain21%38°59°
- MonOct 26Slight Chance Light Rain16%36°58°
- TueOct 27Cloudy34°49°
- WedOct 28Sunny37°51°
- ThuOct 29Mostly sunny32°46°
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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Sun & moon
Almanac
MonthlyWinner, 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 19 hrs ago
Key Messages
- Warm and dry weather through much of this week.
Update
Issued at 1101 PM MDT Mon Oct 19 2026
No major forecast changes were needed with this evening's update. Fairly quiet/low-impact weather continues this week, with diurnally breezy conditions for some areas. Next chance of precip still looks to hold off until at least Friday.
Discussion
(This Evening Through Monday) Issued at 1244 PM MDT Mon Oct 19 2026
Current upper air analysis shows southwest flow over the US as trof deepens off the coast of the PNW. The CWA sits under mostly clear skies with sfc stations reporting temps in the upper 50s to low 60s.
Broad ridging will dominate the pattern through this week, keeping conditions warm and dry. Weak shortwave and attendant cool front will cross the region late Tuesday. Not expecting any precip with this system but highs will be slightly cooler on Wednesday.
Amplifying upper ridge and breezy southerly flow will support much warmer temps on Thursday with highs in the upper 70s to low 80s across much of the region.
Our next chance at precip comes this weekend as trof pushes onshore over the western US. Deterministic and ensemble model solutions diverge on the evolution of this trof as it pushes eastward into the central US, leading to low forecast certainty on timing and specific impacts from this system.
Aviation
(For the 06Z TAFS Through 06Z Tuesday Night) Issued At 933 PM MDT Mon Oct 19 2026
VFR conditions through the forecast period. Breezy winds will continue to slowly diminish across the northeast Wyoming and northwest South Dakota plains before shifting to the north around 20/19-22z.
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 4Search index and reflects what the press published. Terms of use.