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Mount Vernon, SD Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Mount Vernon, a city in Davison County, South Dakota.

Tonight
60°F
Cloudy
Cloudy, with a low around 60. North northwest wind 5 to 10 mph.

7-day forecast for Mount Vernon

WhenTempForecastWindPrecip
Tonight 60°F Cloudy 5 to 10 mph NNW 11%
Saturday 68°F Patchy Fog then Cloudy 10 to 15 mph N 11%
Saturday Night 56°F Cloudy 10 to 15 mph NNE 7%
Sunday 64°F Chance Rain Showers 10 to 15 mph NE 51%
Sunday Night 53°F Rain Showers 10 to 15 mph ENE 81%
Monday 62°F Rain Showers 10 mph E 81%
Monday Night 48°F Mostly Cloudy 5 to 10 mph E 7%
Tuesday 66°F Partly Sunny 5 to 15 mph SE 7%
Tuesday Night 51°F Mostly Cloudy 10 to 15 mph SE 9%
Wednesday 69°F Slight Chance Rain Showers 15 to 20 mph SSE 22%
Wednesday Night 54°F Chance Rain Showers 15 mph SSE 40%
Thursday 71°F Chance Rain Showers then Partly Sunny 10 to 15 mph SSE 40%
Thursday Night 55°F Mostly Cloudy 10 mph SE 8%
Friday 72°F Partly Sunny 10 to 15 mph SE 9%

Forecast source: National Weather Service (api.weather.gov) for Mount Vernon (43.713, -98.261). Updated through the day.

Growing snapshot for Mount Vernon

Last spring frost
Apr 27
First fall frost
Oct 11
Growing season
167 days
Hardiness zone
5a

More local growing data for Mount Vernon: nearby ZIP 57363 weather · frost dates · planting calendar · South Dakota frost dates

Nearby towns & communities

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Climate data from the nearest NOAA station, Mitchell, Sd (10.9 mi from Mount Vernon). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.