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Safety guides Use current official weather information for Harrison, South Dakota 57344 before making weather-sensitive plans.
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Open→Weather status
No active NWS alerts found for Harrison, South Dakota 57344
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What’s next
Hourly forecast
Check the latest hourly conditions, seven-day outlook, rain timing, wind, sunrise and sunset for Harrison, South Dakota 57344. Forecasts and alerts update from NOAA and the National Weather Service.
72°Slight Chance Showers And Thunderstorms18% rain69°Chance Showers And Thunderstorms37% rain68°Showers And Thunderstorms Likely71% rain67°Showers And Thunderstorms Likely70% rain66°Showers And Thunderstorms Likely68% rain65°Showers And Thunderstorms Likely58% rain65°Showers And Thunderstorms Likely62% rain64°Chance Showers And Thunderstorms34% rainNext 24 hours
Rain Timeline
Most likely around 10 PM, 11 PM, 12 AM, 1 AM. Expected type: Thunderstorms.
18%Thunderstorms
37%Thunderstorms
71%Thunderstorms
70%Thunderstorms
68%Thunderstorms
58%Thunderstorms
62%Thunderstorms
34%Thunderstorms
17%Thunderstorms
15%Thunderstorms
9%None
7%None
6%None
11%None
9%None
3%None
3%None
1%None
1%None
1%None
1%None
0%None
1%None
5%None
Official NWS outlook
7-Day Forecast
Today
72°62°
Slight Chance Showers And Thunderstorms then Showers And Thunderstorms Likely
- Precipitation
- 71%
- Wind
- SSE 15 mph
- Sunrise
- 6:49 AM
- Sunset
- 8:27 PM
Mon
86°66°
Mostly Sunny
- Precipitation
- 12%
- Wind
- SSE 10 to 15 mph
- Sunrise
- 6:50 AM
- Sunset
- 8:25 PM
Tue
87°61°
Mostly Sunny
- Precipitation
- 12%
- Wind
- W 5 to 15 mph
- Sunrise
- 6:52 AM
- Sunset
- 8:24 PM
Wed
84°57°
Sunny
- Precipitation
- 0%
- Wind
- NW 5 to 15 mph
- Sunrise
- 6:53 AM
- Sunset
- 8:22 PM
Thu
85°62°
Sunny
- Precipitation
- 49%
- Wind
- E 0 to 5 mph
- Sunrise
- 6:54 AM
- Sunset
- 8:20 PM
Fri
85°64°
Chance Showers And Thunderstorms
- Precipitation
- 49%
- Wind
- SE 10 to 15 mph
- Sunrise
- 6:55 AM
- Sunset
- 8:19 PM
Sat
86°65°
Chance Showers And Thunderstorms then Partly Sunny
- Precipitation
- 32%
- Wind
- SE 10 mph
- Sunrise
- 6:56 AM
- Sunset
- 8:17 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 Feel70°F
Good conditions for walking
Conditions look reasonable, but stay alert for quick weather changes.
WindSE10 mph
Best walk timeBetter weather window: 7 AM–9 AM
Walking: 7% average rain chance, near 63°F, with winds near 15 mph.
Official EPA AirNowLocal air qualityHarrison, South Dakota 57344View AQI +
More weather details
Wind gustsNot reported
Rain now18%next hour
Humidity88%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 gustNot reported
Pressure29.96 in
Visibility10.0 mi
Peak rain chance71%
Dew point66°F
Active alertsNone
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