Harman US

Ferney, SD Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Ferney, a community in Brown County, South Dakota.

Tonight
55°F
Areas Of Drizzle
Areas of drizzle and patchy fog. Cloudy, with a low around 55. Northeast wind 3 to 7 mph. Chance of precipitation is 30%.

7-day forecast for Ferney

WhenTempForecastWindPrecip
Tonight 55°F Areas Of Drizzle 3 to 7 mph NE 34%
Saturday 67°F Areas Of Fog 8 to 12 mph NE 3%
Saturday Night 53°F Mostly Cloudy 6 to 10 mph NE 7%
Sunday 66°F Mostly Cloudy 9 to 13 mph ENE 12%
Sunday Night 50°F Chance Rain Showers 5 to 9 mph E 44%
Monday 64°F Chance Rain Showers then Mostly Cloudy 8 mph E 44%
Monday Night 47°F Mostly Cloudy 6 mph ESE 5%
Tuesday 67°F Partly Sunny 5 to 12 mph SE 2%
Tuesday Night 50°F Partly Cloudy 10 mph SSE 11%
Wednesday 69°F Partly Sunny then Slight Chance Rain Showers 12 to 16 mph SSE 15%
Wednesday Night 54°F Chance Rain Showers 8 to 12 mph SSE 28%
Thursday 71°F Chance Rain Showers then Partly Sunny 9 mph SSE 28%
Thursday Night 54°F Partly Cloudy 7 mph SSE 14%
Friday 73°F Partly Sunny 8 to 14 mph SE 14%

Forecast source: National Weather Service (api.weather.gov) for Ferney (45.335, -98.094). Updated through the day.

Growing snapshot for Ferney

Last spring frost
May 6
First fall frost
Oct 4
Growing season
150 days
Hardiness zone
4a

More local growing data for Ferney: nearby ZIP 57439 weather · frost dates · planting calendar · South Dakota frost dates

Nearby towns & communities

All South Dakota locations ›

Climate data from the nearest NOAA station, Andover #2, Sd (10.8 mi from Ferney). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.