Reliance, SD Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Reliance, a town in Lyman County, South Dakota.
This Afternoon
47°F
Mostly Cloudy
Mostly cloudy, with a high near 47. North northwest wind 20 to 28 mph, with gusts as high as 39 mph.
7-day forecast for Reliance
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 47°F | Mostly Cloudy | 20 to 28 mph NNW | 10% |
| Tonight | 35°F | Cloudy | 15 to 20 mph NW | 6% |
| Wednesday | 48°F | Slight Chance Light Rain | 16 to 21 mph NW | 23% |
| Wednesday Night | 34°F | Mostly Cloudy | 13 to 16 mph NW | 8% |
| Thursday | 49°F | Mostly Sunny | 8 to 14 mph NNW | 0% |
| Thursday Night | 28°F | Partly Cloudy | 6 mph E | 0% |
| Friday | 49°F | Mostly Sunny | 5 to 8 mph SSE | 0% |
| Friday Night | 30°F | Partly Cloudy | 6 mph S | 0% |
| Saturday | 59°F | Mostly Sunny | 6 to 13 mph W | 5% |
| Saturday Night | 34°F | Mostly Clear | 9 mph W | 2% |
| Sunday | 62°F | Sunny | 7 to 10 mph SSW | 0% |
| Sunday Night | 39°F | Mostly Clear | 12 mph SSW | 0% |
| Monday | 61°F | Sunny | 9 to 17 mph NW | 0% |
| Monday Night | 36°F | Partly Cloudy | 7 mph WNW | 0% |
Forecast source: National Weather Service (api.weather.gov) for Reliance (43.880, -99.601). Updated through the day.
Growing snapshot for Reliance
Last spring frost
May 1
First fall frost
Oct 7
Growing season
158 days
Hardiness zone
5a
More local growing data for Reliance: nearby ZIP 57569 weather · frost dates · planting calendar · South Dakota frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Chamberlain Muni Ap, Sd (13.4 mi from Reliance). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.