Hayti, SD Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Hayti, a town in Hamlin County, South Dakota.
Tonight
57°F
Patchy Drizzle then Areas Of Fog
Patchy drizzle and patchy fog before 11pm, then areas of fog and patchy drizzle. Cloudy, with a low around 57. Northeast wind 2 to 8 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Hayti
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 57°F | Patchy Drizzle then Areas Of Fog | 2 to 8 mph NE | 20% |
| Saturday | 65°F | Areas Of Fog | 9 to 14 mph NE | 15% |
| Saturday Night | 52°F | Mostly Cloudy | 8 to 13 mph NE | 3% |
| Sunday | 64°F | Mostly Cloudy then Slight Chance Rain Showers | 12 to 15 mph ENE | 22% |
| Sunday Night | 49°F | Chance Rain Showers | 9 to 13 mph ENE | 47% |
| Monday | 61°F | Chance Rain Showers | 12 mph E | 47% |
| Monday Night | 46°F | Mostly Cloudy | 5 to 9 mph E | 6% |
| Tuesday | 65°F | Partly Sunny | 5 to 12 mph SE | 3% |
| Tuesday Night | 48°F | Partly Cloudy | 9 mph SE | 5% |
| Wednesday | 67°F | Partly Sunny | 9 to 15 mph SSE | 10% |
| Wednesday Night | 52°F | Chance Rain Showers | 10 mph SSE | 30% |
| Thursday | 69°F | Chance Rain Showers | 8 to 12 mph SSE | 30% |
| Thursday Night | 53°F | Mostly Cloudy | 7 mph SSE | 10% |
| Friday | 71°F | Partly Sunny | 7 to 14 mph SE | 11% |
Forecast source: National Weather Service (api.weather.gov) for Hayti (44.659, -97.205). Updated through the day.
Growing snapshot for Hayti
Last spring frost
May 6
First fall frost
Oct 1
Growing season
145 days
Hardiness zone
4b
More local growing data for Hayti: nearby ZIP 57241 weather · frost dates · planting calendar · South Dakota frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Castlewood #2, Sd (9.5 mi from Hayti). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.