Harman US

Harrison, SD Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Harrison, a community in Douglas County, South Dakota.

Overnight
61°F
Areas Of Fog
Areas of fog and patchy drizzle. Cloudy. Low around 61, with temperatures rising to around 64 overnight. North wind 5 to 10 mph.

7-day forecast for Harrison

WhenTempForecastWindPrecip
Overnight 61°F Areas Of Fog 5 to 10 mph N 13%
Saturday 68°F Areas Of Fog then Cloudy 10 mph N 12%
Saturday Night 55°F Cloudy 10 mph NNE 14%
Sunday 64°F Chance Rain Showers 10 to 15 mph NE 46%
Sunday Night 51°F Rain Showers 10 mph ENE 79%
Monday 61°F Rain Showers 10 mph E 79%
Monday Night 46°F Mostly Cloudy 5 to 10 mph ESE 8%
Tuesday 65°F Partly Sunny 5 to 15 mph SE 7%
Tuesday Night 48°F Partly Cloudy 10 to 15 mph SE 8%
Wednesday 69°F Partly Sunny then Slight Chance Rain Showers 15 to 20 mph SSE 18%
Wednesday Night 53°F Chance Showers And Thunderstorms 15 mph SE 42%
Thursday 71°F Chance Showers And Thunderstorms 15 mph SSE 42%
Thursday Night 55°F Slight Chance Rain Showers 10 to 15 mph SE 18%
Friday 73°F Slight Chance Rain Showers then Partly Sunny 15 mph SE 16%

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

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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 Sep 19, 2026.