Harman US

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

WhenTempForecastWindPrecip
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

All South Dakota locations ›

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.