Rockham, SD Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Rockham, a town in Hand County, South Dakota.
Tonight
55°F
Patchy Drizzle
Patchy drizzle and patchy fog. Cloudy, with a low around 55. North northeast wind 6 to 10 mph. Chance of precipitation is 20%.
7-day forecast for Rockham
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 55°F | Patchy Drizzle | 6 to 10 mph NNE | 20% |
| Saturday | 67°F | Patchy Fog | 10 to 14 mph NNE | 4% |
| Saturday Night | 53°F | Cloudy then Chance Rain Showers | 8 to 13 mph NE | 26% |
| Sunday | 65°F | Chance Rain Showers | 14 mph NE | 38% |
| Sunday Night | 51°F | Rain Showers Likely | 8 to 12 mph ENE | 71% |
| Monday | 63°F | Rain Showers Likely | 10 mph E | 71% |
| Monday Night | 47°F | Mostly Cloudy | 8 mph ESE | 13% |
| Tuesday | 66°F | Partly Sunny | 7 to 16 mph SE | 3% |
| Tuesday Night | 50°F | Mostly Cloudy then Slight Chance Rain Showers | 15 mph SSE | 17% |
| Wednesday | 69°F | Slight Chance Rain Showers | 16 to 20 mph SSE | 22% |
| Wednesday Night | 53°F | Chance Rain Showers | 12 to 16 mph SE | 28% |
| Thursday | 71°F | Chance Rain Showers then Partly Sunny | 12 mph SSE | 28% |
| Thursday Night | 54°F | Partly Cloudy | 10 mph SE | 14% |
| Friday | 72°F | Partly Sunny | 10 to 16 mph SE | 14% |
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.