Harrisburg, SD Weather & Growing Conditions
Tonight
61°F
Cloudy then Patchy Fog
Patchy fog and a slight chance of showers and thunderstorms after 2am. Cloudy. Low around 61, with temperatures rising to around 65 overnight. North wind around 5 mph. Chance of precipitation is 20%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 61°F | Cloudy then Patchy Fog | 5 mph N | 22% |
| Saturday | 68°F | Patchy Fog then Cloudy | 5 to 10 mph NNE | 14% |
| Saturday Night | 57°F | Mostly Cloudy | 10 mph NNE | 5% |
| Sunday | 65°F | Mostly Cloudy then Slight Chance Rain Showers | 10 to 15 mph NE | 23% |
| Sunday Night | 53°F | Rain Showers Likely | 10 mph ENE | 61% |
| Monday | 60°F | Rain Showers Likely | 10 mph ENE | 61% |
| Monday Night | 48°F | Slight Chance Rain Showers then Mostly Cloudy | 5 to 10 mph ENE | 24% |
| Tuesday | 63°F | Partly Sunny | 5 to 10 mph E | 4% |
| Tuesday Night | 48°F | Partly Cloudy | 5 mph SE | 1% |
| Wednesday | 67°F | Partly Sunny | 5 to 10 mph SSE | 10% |
| Wednesday Night | 53°F | Chance Rain Showers | 5 to 10 mph SSE | 38% |
| Thursday | 68°F | Chance Rain Showers | 5 to 10 mph SSE | 38% |
| Thursday Night | 54°F | Mostly Cloudy then Slight Chance Rain Showers | 5 mph SE | 17% |
| Friday | 70°F | Slight Chance Rain Showers then Partly Sunny | 5 to 10 mph SE | 17% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Harrisburg, SD
Last spring frost
May 2
First fall frost
Oct 2
Growing season
151 days
Hardiness zone
5a
Explore more for Harrisburg, SD: full frost dates · planting calendar · South Dakota frost dates
Climate data from the nearest NOAA station, Canton, Sd (9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.