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Safety guides Use current official weather information for Fort Thompson, South Dakota 57339 before making weather-sensitive plans.
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No active NWS alerts found for Fort Thompson, South Dakota 57339
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What’s next
Hourly forecast
Check the latest hourly conditions, seven-day outlook, rain timing, wind, sunrise and sunset for Fort Thompson, South Dakota 57339. Forecasts and alerts update from NOAA and the National Weather Service.
67°Slight Chance Showers And Thunderstorms26% rain65°Chance Showers And Thunderstorms37% rain64°Chance Showers And Thunderstorms34% rain65°Chance Showers And Thunderstorms31% rain66°Slight Chance Showers And Thunderstorms21% rain
66°Mostly Cloudy8% rain64°Mostly Cloudy6% rain
64°Partly Cloudy5% rainNext 24 hours
Rain Timeline
Scattered precipitation is possible. The highest official hourly chance is 37%; check the radar before heading out.
26%Thunderstorms
37%Thunderstorms
34%Thunderstorms
31%Thunderstorms
21%Thunderstorms
8%None
6%None
5%None
6%None
4%None
3%None
0%None
2%None
2%None
2%None
0%None
0%None
0%None
1%None
1%None
1%None
9%None
19%Thunderstorms
22%Thunderstorms
Official NWS outlook
7-Day Forecast
Today
67°62°
Chance Showers And Thunderstorms
- Precipitation
- 37%
- Wind
- SE 13 mph
- Sunrise
- 6:51 AM
- Sunset
- 8:31 PM
Mon
87°65°
Mostly Sunny
- Precipitation
- 22%
- Wind
- SE 6 to 9 mph
- Sunrise
- 6:53 AM
- Sunset
- 8:29 PM
Tue
86°61°
Mostly Sunny
- Precipitation
- 8%
- Wind
- WNW 3 to 15 mph
- Sunrise
- 6:54 AM
- Sunset
- 8:28 PM
Wed
83°58°
Sunny
- Precipitation
- 1%
- Wind
- NW 5 to 13 mph
- Sunrise
- 6:55 AM
- Sunset
- 8:26 PM
Thu
85°62°
Sunny
- Precipitation
- 44%
- Wind
- E 1 to 8 mph
- Sunrise
- 6:56 AM
- Sunset
- 8:24 PM
Fri
85°63°
Chance Showers And Thunderstorms
- Precipitation
- 44%
- Wind
- SE 10 to 15 mph
- Sunrise
- 6:57 AM
- Sunset
- 8:23 PM
Sat
86°64°
Slight Chance Rain Showers then Partly Sunny
- Precipitation
- 24%
- Wind
- ESE 7 to 10 mph
- Sunrise
- 6:58 AM
- Sunset
- 8:21 PM
Forecasts, icons, precipitation, wind, and alerts are from the National Weather Service. Sunrise and sunset are calculated locally for the selected coordinates.
Weather for a healthier day
Healthy Weather
Real Feel68°F
Good conditions for walking
Conditions look reasonable, but stay alert for quick weather changes.
WindSE10 mph
Best walk timeBetter weather window: 8 AM–10 AM
Walking: 2% average rain chance, near 65°F, with winds near 9 mph.
Official EPA AirNowLocal air qualityFort Thompson, South Dakota 57339View AQI +
More weather details
Wind gusts16mph
Rain now26%next hour
Humidity78%current
UV indexCheckingEPA forecast
Wind impact: Noticeable breeze with generally minor outdoor impact.
“Better weather window” is planning guidance based on official NWS data—not a promise of safe conditions. Review active alerts and radar before leaving.
Storm & DetailsGusts, pressure, visibility and official risk outlooksView details +
Wind gust16 mph
Pressure29.97 in
Visibility10.0 mi
Peak rain chance37%
Dew point61°F
Active alertsNone
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