Lyons, SD Weather & Growing Conditions
Today
72°F
Scattered Rain Showers
Scattered rain showers. Partly sunny, with a high near 72. Northwest wind 5 to 10 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 72°F | Scattered Rain Showers | 5 to 10 mph NW | 36% |
| Tonight | 53°F | Partly Cloudy | 0 to 5 mph NW | 4% |
| Wednesday | 76°F | Mostly Sunny | 0 to 5 mph S | 0% |
| Wednesday Night | 56°F | Mostly Clear | 5 to 10 mph SSW | 0% |
| Thursday | 82°F | Sunny | 5 to 15 mph SSW | 1% |
| Thursday Night | 63°F | Mostly Clear | 10 to 15 mph S | 4% |
| Friday | 86°F | Sunny | 10 to 15 mph SSW | 12% |
| Friday Night | 64°F | Mostly Clear | 5 to 10 mph S | 13% |
| Saturday | 88°F | Sunny | 5 to 20 mph S | 5% |
| Saturday Night | 67°F | Slight Chance Showers And Thunderstorms | 10 to 20 mph ESE | 21% |
| Sunday | 87°F | Mostly Sunny | 10 to 15 mph ESE | 13% |
| Sunday Night | 67°F | Slight Chance Showers And Thunderstorms | 15 mph E | 21% |
| Monday | 85°F | Slight Chance Showers And Thunderstorms then Partly Sunny | 15 mph ENE | 21% |
| Monday Night | 66°F | Slight Chance Showers And Thunderstorms | 15 mph ENE | 18% |
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 Aug 4, 2026.