Lebanon, SD Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Lebanon, a town in Potter County, South Dakota.
Overnight
47°F
Patchy Smoke
Patchy smoke. Mostly clear, with a low around 47. West northwest wind around 8 mph.
7-day forecast for Lebanon
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 47°F | Patchy Smoke | 8 mph WNW | 0% |
| Tuesday | 74°F | Patchy Smoke then Mostly Sunny | 8 to 14 mph NW | 0% |
| Tuesday Night | 54°F | Mostly Clear | 6 to 9 mph SW | 0% |
| Wednesday | 82°F | Mostly Sunny | 7 to 13 mph SW | 0% |
| Wednesday Night | 59°F | Partly Cloudy | 9 to 14 mph SSW | 3% |
| Thursday | 88°F | Sunny | 13 mph SW | 4% |
| Thursday Night | 62°F | Mostly Clear | 10 mph SSW | 4% |
| Friday | 90°F | Sunny | 9 to 13 mph NW | 2% |
| Friday Night | 62°F | Mostly Clear | 12 mph E | 1% |
| Saturday | 92°F | Mostly Sunny | 13 to 17 mph E | 2% |
| Saturday Night | 61°F | Mostly Clear | 12 to 15 mph ENE | 4% |
| Sunday | 88°F | Mostly Sunny | 12 to 17 mph ENE | 4% |
| Sunday Night | 63°F | Chance Showers And Thunderstorms | 14 to 17 mph E | 33% |
| Monday | 86°F | Chance Showers And Thunderstorms then Partly Sunny | 14 to 18 mph ENE | 33% |
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 Aug 4, 2026.