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.

Tonight
60°F
Patchy Fog
Patchy fog between 11pm and 1am. Cloudy, with a low around 60. North northwest wind 5 to 10 mph.

7-day forecast for Harrison

WhenTempForecastWindPrecip
Tonight 60°F Patchy Fog 5 to 10 mph NNW 11%
Saturday 67°F Patchy Fog then Cloudy 10 to 15 mph N 10%
Saturday Night 56°F Cloudy 10 to 15 mph NNE 12%
Sunday 63°F Rain Showers Likely 10 to 15 mph NE 56%
Sunday Night 52°F Rain Showers 10 mph ENE 85%
Monday 61°F Rain Showers 10 mph ENE 85%
Monday Night 48°F Mostly Cloudy 5 to 10 mph E 10%
Tuesday 66°F Mostly Cloudy 10 to 15 mph SE 10%
Tuesday Night 51°F Mostly Cloudy 10 to 15 mph SE 10%
Wednesday 70°F Chance Rain Showers 15 mph SSE 26%
Wednesday Night 54°F Chance Showers And Thunderstorms 15 mph SSE 43%
Thursday 71°F Chance Showers And Thunderstorms then Partly Sunny 10 to 15 mph SSE 43%
Thursday Night 56°F Mostly Cloudy 10 mph SE 9%
Friday 72°F Partly Sunny 10 to 15 mph SE 11%

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.