Lyons, SD Weather & Growing Conditions
Tonight
61°F
Areas Of Fog
Areas of fog after 9pm. Cloudy, with a low around 61. North northeast wind 5 to 10 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 61°F | Areas Of Fog | 5 to 10 mph NNE | 9% |
| Saturday | 67°F | Patchy Fog then Cloudy | 10 to 15 mph NNE | 11% |
| Saturday Night | 56°F | Mostly Cloudy | 10 to 15 mph NNE | 3% |
| Sunday | 65°F | Mostly Cloudy then Slight Chance Rain Showers | 10 to 15 mph NE | 22% |
| Sunday Night | 53°F | Rain Showers Likely | 10 to 15 mph ENE | 56% |
| Monday | 61°F | Rain Showers Likely | 10 mph ENE | 56% |
| Monday Night | 47°F | Mostly Cloudy | 5 to 10 mph ENE | 10% |
| Tuesday | 64°F | Partly Sunny | 5 to 10 mph ESE | 4% |
| Tuesday Night | 48°F | Partly Cloudy | 5 to 10 mph SE | 3% |
| Wednesday | 68°F | Partly Sunny | 5 to 15 mph SSE | 10% |
| Wednesday Night | 52°F | Chance Rain Showers | 10 mph SSE | 39% |
| Thursday | 68°F | Chance Rain Showers | 10 mph SSE | 39% |
| Thursday Night | 54°F | Mostly Cloudy | 5 to 10 mph SE | 13% |
| Friday | 70°F | Partly Sunny | 5 to 15 mph SE | 13% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Lyons, SD
Last spring frost
Apr 26
First fall frost
Oct 13
Growing season
169 days
Hardiness zone
5a
Explore more for Lyons, SD: full frost dates · planting calendar · South Dakota frost dates
Climate data from the nearest NOAA station, Sioux Falls Wfo Ap, Sd (12 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.