Lebanon, SD Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Lebanon, a town in Potter County, South Dakota.
Tonight
55°F
Areas Of Fog
Areas of fog. Cloudy, with a low around 55. North northeast wind 6 to 9 mph.
7-day forecast for Lebanon
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 55°F | Areas Of Fog | 6 to 9 mph NNE | 6% |
| Saturday | 66°F | Areas Of Fog | 9 to 14 mph NE | 6% |
| Saturday Night | 52°F | Cloudy then Chance Rain Showers | 10 to 14 mph NE | 42% |
| Sunday | 62°F | Chance Rain Showers | 16 mph ENE | 46% |
| Sunday Night | 50°F | Rain Showers | 9 to 14 mph E | 79% |
| Monday | 62°F | Rain Showers | 9 to 13 mph E | 79% |
| Monday Night | 47°F | Mostly Cloudy | 8 to 13 mph ESE | 13% |
| Tuesday | 66°F | Mostly Cloudy | 9 to 20 mph SE | 7% |
| Tuesday Night | 51°F | Mostly Cloudy then Slight Chance Rain Showers | 18 mph SE | 20% |
| Wednesday | 71°F | Slight Chance Rain Showers | 20 mph SSE | 21% |
| Wednesday Night | 54°F | Chance Rain Showers | 10 to 18 mph SE | 31% |
| Thursday | 72°F | Chance Rain Showers then Partly Sunny | 9 to 13 mph SE | 27% |
| Thursday Night | 54°F | Partly Cloudy | 12 mph SE | 13% |
| Friday | 73°F | Partly Sunny | 9 to 17 mph SE | 10% |
Forecast source: National Weather Service (api.weather.gov) for Lebanon (45.069, -99.766). Updated through the day.
Growing snapshot for Lebanon
Last spring frost
May 7
First fall frost
Oct 2
Growing season
147 days
Hardiness zone
4b
More local growing data for Lebanon: nearby ZIP 57455 weather · frost dates · planting calendar · South Dakota frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Gettysburg, Sd (12.6 mi from Lebanon). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.