Kennebec, SD Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Kennebec, a town in Lyman County, South Dakota.
Overnight
35°F
Cloudy
Cloudy, with a low around 35. Northwest wind around 21 mph, with gusts as high as 29 mph.
7-day forecast for Kennebec
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 35°F | Cloudy | 21 mph NW | 8% |
| Wednesday | 48°F | Slight Chance Light Rain then Cloudy | 17 to 22 mph NW | 24% |
| Wednesday Night | 35°F | Mostly Cloudy | 12 to 15 mph NW | 0% |
| Thursday | 49°F | Patchy Fog then Mostly Sunny | 7 to 13 mph NNW | 0% |
| Thursday Night | 27°F | Partly Cloudy | 6 mph E | 0% |
| Friday | 50°F | Partly Sunny | 5 to 9 mph SE | 0% |
| Friday Night | 30°F | Partly Cloudy | 6 mph SSE | 0% |
| Saturday | 60°F | Sunny | 5 to 13 mph WSW | 0% |
| Saturday Night | 35°F | Mostly Clear | 8 mph W | 0% |
| Sunday | 63°F | Sunny | 6 to 12 mph SSW | 0% |
| Sunday Night | 40°F | Mostly Clear | 10 mph SW | 0% |
| Monday | 62°F | Sunny | 8 to 15 mph NW | 0% |
| Monday Night | 36°F | Mostly Clear | 6 mph NW | 0% |
| Tuesday | 60°F | Mostly Sunny | 5 to 10 mph SSW | 1% |
Forecast source: National Weather Service (api.weather.gov) for Kennebec (43.903, -99.862). Updated through the day.
Growing snapshot for Kennebec
Last spring frost
May 12
First fall frost
Sep 28
Growing season
137 days
Hardiness zone
5a
More local growing data for Kennebec: nearby ZIP 57544 weather · frost dates · planting calendar · South Dakota frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Kennebec, Sd (1.5 mi from Kennebec). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.