Rockham, SD Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Rockham, a town in Hand County, South Dakota.
Today
66°F
Patchy Fog then Cloudy
Patchy fog before 11am. Cloudy, with a high near 66. North northeast wind 9 to 13 mph, with gusts as high as 22 mph.
7-day forecast for Rockham
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 66°F | Patchy Fog then Cloudy | 9 to 13 mph NNE | 3% |
| Tonight | 51°F | Mostly Cloudy then Slight Chance Rain Showers | 8 to 13 mph NNE | 22% |
| Sunday | 66°F | Cloudy then Chance Rain Showers | 14 mph NE | 28% |
| Sunday Night | 49°F | Chance Rain Showers | 7 to 13 mph ENE | 35% |
| Monday | 65°F | Chance Rain Showers then Mostly Cloudy | 9 mph E | 35% |
| Monday Night | 44°F | Mostly Cloudy | 8 mph SE | 9% |
| Tuesday | 67°F | Partly Sunny | 7 to 17 mph SE | 4% |
| Tuesday Night | 48°F | Mostly Cloudy | 13 to 16 mph SE | 5% |
| Wednesday | 70°F | Partly Sunny then Slight Chance Rain Showers | 20 mph SSE | 17% |
| Wednesday Night | 51°F | Chance Rain Showers | 16 mph SSE | 38% |
| Thursday | 72°F | Chance Rain Showers | 15 mph SSE | 38% |
| Thursday Night | 53°F | Slight Chance Rain Showers | 13 mph SE | 19% |
| Friday | 74°F | Slight Chance Rain Showers then Partly Sunny | 13 to 18 mph SE | 17% |
| Friday Night | 54°F | Mostly Cloudy then Slight Chance Rain Showers | 17 mph SSE | 21% |
Forecast source: National Weather Service (api.weather.gov) for Rockham (44.904, -98.823). Updated through the day.
Growing snapshot for Rockham
Last spring frost
May 10
First fall frost
Sep 28
Growing season
139 days
Hardiness zone
4b
More local growing data for Rockham: nearby ZIP 57470 weather · frost dates · planting calendar · South Dakota frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Faulkton 1 Nw, Sd (15.8 mi from Rockham). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.