Lebanon, SD Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Lebanon, a town in Potter County, South Dakota.
Overnight
33°F
Patchy Fog
Patchy fog before 4am, then patchy fog and a slight chance of rain. Cloudy. Low around 33, with temperatures rising to around 36 overnight. North northwest wind around 17 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Lebanon
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 33°F | Patchy Fog | 17 mph NNW | 15% |
| Wednesday | 46°F | Patchy Fog then Mostly Cloudy | 16 to 20 mph NNW | 11% |
| Wednesday Night | 31°F | Mostly Cloudy then Patchy Fog | 12 to 17 mph NNW | 1% |
| Thursday | 45°F | Patchy Fog then Mostly Sunny | 6 to 12 mph N | 0% |
| Thursday Night | 24°F | Partly Cloudy | 7 mph ESE | 0% |
| Friday | 45°F | Mostly Sunny | 5 to 8 mph SSE | 0% |
| Friday Night | 29°F | Partly Cloudy | 6 mph S | 0% |
| Saturday | 56°F | Sunny | 6 to 15 mph WSW | 0% |
| 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.