Harrison, SD Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Harrison, a community in Douglas County, South Dakota.
This Afternoon
48°F
Rain Showers Likely
Rain showers likely. Cloudy. High near 48, with temperatures falling to around 45 in the afternoon. North northwest wind 20 to 25 mph, with gusts as high as 40 mph. Chance of precipitation is 70%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Harrison
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 48°F | Rain Showers Likely | 20 to 25 mph NNW | 65% |
| Tonight | 36°F | Chance Rain Showers | 15 to 20 mph NW | 30% |
| Wednesday | 46°F | Rain Showers Likely | 15 to 20 mph NW | 60% |
| Wednesday Night | 34°F | Slight Chance Rain Showers then Mostly Cloudy | 15 mph NW | 22% |
| Thursday | 48°F | Partly Sunny | 10 to 15 mph NNW | 3% |
| Thursday Night | 28°F | Mostly Cloudy | 0 to 10 mph NE | 0% |
| Friday | 49°F | Partly Sunny | 0 to 5 mph SSE | 0% |
| Friday Night | 30°F | Partly Cloudy | 5 mph S | 0% |
| Saturday | 59°F | Mostly Sunny | 5 to 10 mph W | 5% |
| Saturday Night | 34°F | Mostly Clear | 5 to 10 mph W | 3% |
| Sunday | 60°F | Sunny | 5 to 10 mph SW | 0% |
| Sunday Night | 39°F | Mostly Clear | 10 mph SSW | 0% |
| Monday | 62°F | Sunny | 10 to 15 mph WNW | 0% |
| Monday Night | 36°F | Mostly Clear | 5 to 10 mph WNW | 0% |
Forecast source: National Weather Service (api.weather.gov) for Harrison (43.431, -98.527). Updated through the day.
Growing snapshot for Harrison
Last spring frost
May 3
First fall frost
Oct 6
Growing season
157 days
Hardiness zone
5a
More local growing data for Harrison: nearby ZIP 57328 weather · frost dates · planting calendar · South Dakota frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Armour, Sd (9.7 mi from Harrison). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.