Lebanon, SD Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Lebanon, a town in Potter County, South Dakota.
Tonight
33°F
Patchy Fog
Patchy fog. Cloudy, with a low around 33. North northwest wind 13 to 16 mph, with gusts as high as 24 mph.
7-day forecast for Lebanon
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 33°F | Patchy Fog | 13 to 16 mph NNW | 8% |
| Wednesday | 45°F | Patchy Fog then Mostly Cloudy | 18 mph NNW | 5% |
| Wednesday Night | 30°F | Mostly Cloudy | 12 to 16 mph NNW | 2% |
| Thursday | 46°F | Mostly Sunny | 7 to 12 mph N | 0% |
| Thursday Night | 25°F | Partly Cloudy | 6 mph ESE | 0% |
| Friday | 46°F | Mostly Sunny | 5 to 8 mph S | 0% |
| Friday Night | 28°F | Partly Cloudy | 7 mph SW | 0% |
| Saturday | 56°F | Mostly Sunny | 7 to 15 mph W | 4% |
| Saturday Night | 32°F | Mostly Clear | 7 to 12 mph W | 1% |
| Sunday | 58°F | Sunny | 7 to 12 mph SSW | 0% |
| Sunday Night | 37°F | Mostly Clear | 9 to 13 mph SW | 0% |
| Monday | 58°F | Sunny | 12 to 17 mph NW | 0% |
| Monday Night | 34°F | Partly Cloudy | 6 to 9 mph WNW | 0% |
| Tuesday | 55°F | Mostly Sunny | 6 to 10 mph SW | 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.