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
44°F
Cloudy
Cloudy. High near 44, with temperatures falling to around 40 in the afternoon. North northwest wind around 14 mph, with gusts as high as 22 mph.
7-day forecast for Glenham
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 44°F | Cloudy | 14 mph NNW | 0% |
| Tonight | 32°F | Cloudy | 9 to 13 mph NNW | 0% |
| Wednesday | 49°F | Mostly Cloudy | 13 to 18 mph NNW | 1% |
| Wednesday Night | 28°F | Mostly Cloudy | 8 to 14 mph NNW | 0% |
| Thursday | 47°F | Mostly Sunny | 6 to 10 mph N | 0% |
| Thursday Night | 24°F | Partly Cloudy | 5 mph ESE | 0% |
| Friday | 48°F | Mostly Sunny | 5 to 8 mph SSW | 0% |
| Friday Night | 28°F | Partly Cloudy | 6 mph SSW | 0% |
| Saturday | 59°F | Mostly Sunny | 6 to 16 mph W | 4% |
| Saturday Night | 30°F | Mostly Clear | 5 to 9 mph W | 1% |
| Sunday | 59°F | Sunny | 5 to 12 mph SSW | 0% |
| Sunday Night | 35°F | Mostly Clear | 10 mph SW | 0% |
| Monday | 59°F | Sunny | 10 to 17 mph NW | 0% |
| Monday Night | 32°F | Partly Cloudy | 3 to 8 mph W | 0% |
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 Nov 4, 2026.