Rockham, SD Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Rockham, a town in Hand County, South Dakota.
Today
77°F
Patchy Smoke then Mostly Sunny
Patchy smoke before 10am. Mostly sunny, with a high near 77. Northwest wind around 12 mph, with gusts as high as 21 mph.
7-day forecast for Rockham
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 77°F | Patchy Smoke then Mostly Sunny | 12 mph NW | 1% |
| Tonight | 54°F | Mostly Clear | 5 to 8 mph SW | 0% |
| Wednesday | 83°F | Sunny | 7 to 14 mph SW | 0% |
| Wednesday Night | 60°F | Partly Cloudy | 9 to 13 mph SSW | 4% |
| Thursday | 89°F | Sunny | 12 to 15 mph SSW | 6% |
| Thursday Night | 62°F | Mostly Clear | 9 to 13 mph SSW | 11% |
| Friday | 90°F | Sunny | 8 to 12 mph SSW | 3% |
| Friday Night | 61°F | Mostly Clear | 8 to 12 mph ESE | 4% |
| Saturday | 91°F | Sunny | 8 to 18 mph ESE | 5% |
| Saturday Night | 61°F | Mostly Clear | 10 to 16 mph ENE | 11% |
| Sunday | 88°F | Mostly Sunny | 10 to 17 mph NE | 5% |
| Sunday Night | 63°F | Slight Chance Showers And Thunderstorms | 10 to 17 mph ENE | 25% |
| Monday | 85°F | Chance Showers And Thunderstorms then Partly Sunny | 10 to 18 mph NE | 25% |
| Monday Night | 61°F | Slight Chance Showers And Thunderstorms | 12 to 18 mph NE | 19% |
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 Aug 4, 2026.