Rockham, SD Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Rockham, a town in Hand County, South Dakota.
This Afternoon
49°F
Slight Chance Light Rain
A slight chance of rain. Cloudy, with a high near 49. North northwest wind around 22 mph, with gusts as high as 35 mph. Chance of precipitation is 20%.
7-day forecast for Rockham
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 49°F | Slight Chance Light Rain | 22 mph NNW | 16% |
| Tonight | 34°F | Chance Light Rain | 14 to 18 mph NNW | 36% |
| Wednesday | 46°F | Chance Light Rain | 18 mph NNW | 46% |
| Wednesday Night | 31°F | Mostly Cloudy | 12 to 15 mph NNW | 11% |
| Thursday | 45°F | Mostly Sunny | 8 to 13 mph N | 0% |
| Thursday Night | 25°F | Mostly Cloudy | 2 to 7 mph E | 0% |
| Friday | 45°F | Partly Sunny | 2 to 6 mph S | 0% |
| Friday Night | 26°F | Partly Cloudy | 6 mph SSW | 0% |
| Saturday | 58°F | Mostly Sunny | 6 to 13 mph W | 3% |
| Saturday Night | 31°F | Mostly Clear | 9 mph W | 1% |
| Sunday | 58°F | Sunny | 7 to 10 mph SSW | 0% |
| Sunday Night | 35°F | Mostly Clear | 9 mph SSW | 0% |
| Monday | 60°F | Sunny | 9 to 16 mph WNW | 0% |
| Monday Night | 32°F | Mostly Clear | 8 mph WNW | 0% |
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 Nov 4, 2026.