Glenham, SD Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Glenham, a town in Walworth County, South Dakota.
Today
77°F
Mostly Sunny
Mostly sunny, with a high near 77. Northwest wind 7 to 12 mph.
7-day forecast for Glenham
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 77°F | Mostly Sunny | 7 to 12 mph NW | 0% |
| Tonight | 54°F | Partly Cloudy | 3 to 9 mph SSW | 0% |
| Wednesday | 86°F | Sunny | 2 to 12 mph WSW | 0% |
| Wednesday Night | 60°F | Partly Cloudy | 9 mph S | 2% |
| Thursday | 92°F | Sunny | 9 mph WSW | 1% |
| Thursday Night | 62°F | Mostly Clear | 9 mph E | 1% |
| Friday | 92°F | Sunny | 7 to 13 mph NW | 1% |
| Friday Night | 63°F | Mostly Clear | 12 mph ESE | 1% |
| Saturday | 95°F | Mostly Sunny | 9 to 16 mph E | 1% |
| Saturday Night | 61°F | Mostly Clear | 9 to 14 mph ENE | 3% |
| Sunday | 91°F | Mostly Sunny | 9 to 17 mph ENE | 8% |
| Sunday Night | 63°F | Chance Showers And Thunderstorms | 13 to 16 mph E | 31% |
| Monday | 89°F | Slight Chance Showers And Thunderstorms | 14 to 17 mph ENE | 27% |
| Monday Night | 62°F | Slight Chance Showers And Thunderstorms | 12 to 16 mph ENE | 27% |
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 Aug 4, 2026.