Harrison, SD Weather Forecast
Local 7-day forecast
Chance Rain Showers
Track current conditions, temperature changes, wind, and the full daily outlook for Harrison, SD in one place.
A chance of rain showers before 1pm. Mostly sunny, with a high near 83. South southwest wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 40%.
Local Weather Overview
This forecast page for Harrison, SD is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Aug 15, 2026 10:05 AM CDT.
The active forecast window currently covers Aug 17 to Aug 21, 2026 for Harrison, SD.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Aug 17 to Aug 21, 2026
- Latest sync
- Aug 15, 2026 10:05 AM CDT
- Forecast office
- FSD
- Source
- NOAA / NWS
Daily Outlook
This Week in Harrison
Monday looks like the warmest upcoming period in Harrison at 83 degrees F.
Wednesday Night is the coolest period ahead with temperatures near 56 degrees F.
The strongest winds are forecast for Monday at about 5 to 15 mph SSW.
Precipitation is mentioned in 7 upcoming forecast periods.
Forecast Details
- Last updated
- Aug 15, 2026 10:05 AM CDT
- Coverage
- 5 days
- Time zone
- America/Chicago
- Forecast office
- FSD
- Radar station
- KFSD
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
A chance of showers and thunderstorms after 7pm. Partly cloudy, with a low around 62. South southwest wind 5 to 10 mph. Chance of precipitation is 50%.
A chance of showers and thunderstorms before 7am, then showers and thunderstorms likely. Mostly cloudy, with a high near 80. Chance of precipitation is 60%.
Showers and thunderstorms likely before 7pm, then a chance of showers and thunderstorms between 7pm and 1am. Mostly cloudy, with a low around 57. Chance of precipitation is 60%.
Partly sunny, with a high near 74.
A slight chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 56.
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 77.
A slight chance of showers and thunderstorms before 1am. Mostly clear, with a low around 58.
Mostly sunny, with a high near 81.
Mostly clear, with a low around 60.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Monday
Aug 17
|
Chance Rain Showers
|
83°F |
5 to 15 mph
SSW
|
|
Monday Night
Aug 17
|
Chance Showers And Thunderstorms
|
62°F |
5 to 10 mph
SSW
|
|
Tuesday
Aug 18
|
Chance Showers And Thunderstorms then Showers And Thunderstorms Likely
|
80°F |
5 to 10 mph
SE
|
|
Tuesday Night
Aug 18
|
Showers And Thunderstorms Likely then Chance Showers And Thunderstorms
|
57°F |
5 to 10 mph
N
|
|
Wednesday
Aug 19
|
Partly Sunny
|
74°F |
10 mph
N
|
|
Wednesday Night
Aug 19
|
Partly Cloudy then Slight Chance Showers And Thunderstorms
|
56°F |
5 to 10 mph
E
|
|
Thursday
Aug 20
|
Slight Chance Showers And Thunderstorms
|
77°F |
10 to 15 mph
SSE
|
|
Thursday Night
Aug 20
|
Slight Chance Showers And Thunderstorms
|
58°F |
10 mph
SSE
|
|
Friday
Aug 21
|
Mostly Sunny
|
81°F |
10 mph
SSE
|
|
Friday Night
Aug 21
|
Mostly Clear
|
60°F |
5 to 10 mph
SE
|
Nearby Forecasts
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