Lebanon, SD Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Lebanon, a town in Potter County, South Dakota.
This Afternoon
48°F
Mostly Cloudy
Mostly cloudy, with a high near 48. North northwest wind around 20 mph, with gusts as high as 29 mph.
7-day forecast for Lebanon
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 48°F | Mostly Cloudy | 20 mph NNW | 0% |
| Tonight | 30°F | Mostly Cloudy then Patchy Fog | 12 to 17 mph NNW | 0% |
| Thursday | 43°F | Patchy Fog then Mostly Sunny | 6 to 13 mph N | 0% |
| Thursday Night | 23°F | Partly Cloudy | 7 mph ESE | 0% |
| Friday | 45°F | Mostly Sunny | 6 to 9 mph SSE | 0% |
| Friday Night | 28°F | Partly Cloudy | 7 mph S | 0% |
| Saturday | 57°F | Mostly Sunny | 6 to 13 mph WSW | 0% |
| Saturday Night | 32°F | Mostly Clear | 3 to 9 mph W | 0% |
| Sunday | 59°F | Sunny | 3 to 12 mph SW | 0% |
| Sunday Night | 38°F | Mostly Clear | 10 mph SW | 0% |
| Monday | 61°F | Sunny | 10 to 15 mph NW | 0% |
| Monday Night | 33°F | Partly Cloudy | 8 mph NNW | 1% |
| Tuesday | 55°F | Mostly Sunny | 6 to 10 mph S | 1% |
| Tuesday Night | 35°F | Partly Cloudy | 7 mph SSE | 0% |
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 Nov 4, 2026.