Lebanon, SD Weather & Growing Conditions
Today
73°F
Patchy Smoke then Mostly Sunny
Patchy smoke before 10am. Mostly sunny, with a high near 73. Northwest wind around 14 mph, with gusts as high as 23 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 73°F | Patchy Smoke then Mostly Sunny | 14 mph NW | 0% |
| Tonight | 54°F | Mostly Clear | 7 to 10 mph SW | 0% |
| Wednesday | 82°F | Mostly Sunny | 9 to 14 mph SW | 0% |
| Wednesday Night | 59°F | Partly Cloudy | 10 to 15 mph SSW | 4% |
| Thursday | 88°F | Sunny | 14 mph SW | 5% |
| Thursday Night | 62°F | Mostly Clear | 9 to 13 mph SSW | 5% |
| Friday | 90°F | Sunny | 14 mph NW | 2% |
| Friday Night | 62°F | Mostly Clear | 14 mph E | 1% |
| Saturday | 92°F | Mostly Sunny | 14 to 18 mph E | 2% |
| Saturday Night | 62°F | Mostly Clear | 16 mph ENE | 4% |
| Sunday | 88°F | Mostly Sunny | 15 to 18 mph ENE | 3% |
| Sunday Night | 63°F | Chance Showers And Thunderstorms | 18 mph E | 33% |
| Monday | 86°F | Chance Showers And Thunderstorms then Partly Sunny | 20 mph ENE | 33% |
| Monday Night | 61°F | Chance Showers And Thunderstorms | 16 to 20 mph ENE | 25% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Lebanon, SD
Last spring frost
May 7
First fall frost
Oct 2
Growing season
147 days
Hardiness zone
4b
Explore more for Lebanon, SD: full frost dates · planting calendar · South Dakota frost dates
Climate data from the nearest NOAA station, Gettysburg, Sd (12.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.