Glenham, SD Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Glenham, a town in Walworth County, South Dakota.
This Afternoon
66°F
Patchy Fog
Patchy fog. Cloudy, with a high near 66. East northeast wind around 12 mph.
7-day forecast for Glenham
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 66°F | Patchy Fog | 12 mph ENE | 4% |
| Tonight | 54°F | Patchy Fog | 6 to 10 mph NE | 4% |
| Saturday | 68°F | Patchy Fog | 7 to 13 mph NE | 5% |
| Saturday Night | 52°F | Cloudy then Chance Rain Showers | 9 to 13 mph ENE | 28% |
| Sunday | 63°F | Chance Rain Showers | 15 mph ENE | 47% |
| Sunday Night | 49°F | Rain Showers Likely | 7 to 14 mph E | 65% |
| Monday | 65°F | Rain Showers Likely | 8 to 12 mph E | 60% |
| Monday Night | 47°F | Mostly Cloudy | 8 to 12 mph SE | 8% |
| Tuesday | 68°F | Partly Sunny | 9 to 21 mph SE | 5% |
| Tuesday Night | 51°F | Mostly Cloudy | 16 to 20 mph SE | 14% |
| Wednesday | 73°F | Partly Sunny | 20 mph SSE | 14% |
| Wednesday Night | 53°F | Chance Rain Showers | 8 to 18 mph SE | 31% |
| Thursday | 75°F | Slight Chance Rain Showers then Mostly Sunny | 7 to 12 mph SE | 19% |
| Thursday Night | 54°F | Partly Cloudy | 12 mph SE | 10% |
Forecast source: National Weather Service (api.weather.gov) for Glenham (45.533, -100.271). Updated through the day.
Growing snapshot for Glenham
Last spring frost
May 5
First fall frost
Oct 4
Growing season
150 days
Hardiness zone
4b
More local growing data for Glenham: nearby ZIP 57631 weather · frost dates · planting calendar · South Dakota frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Mobridge Muni Ap, Sd (6.2 mi from Glenham). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.