South Heart, ND Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for South Heart, a city in Stark County, North Dakota.
Today
74°F
Sunny
Sunny. High near 74, with temperatures falling to around 71 in the afternoon. West wind 7 to 17 mph, with gusts as high as 26 mph.
7-day forecast for South Heart
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 74°F | Sunny | 7 to 17 mph W | 0% |
| Tonight | 48°F | Mostly Clear | 3 to 14 mph W | 1% |
| Wednesday | 83°F | Mostly Sunny | 7 to 13 mph W | 0% |
| Wednesday Night | 54°F | Partly Cloudy | 5 to 12 mph SW | 1% |
| Thursday | 89°F | Sunny | 5 to 10 mph W | 0% |
| Thursday Night | 57°F | Mostly Clear | 5 to 9 mph E | 0% |
| Friday | 90°F | Sunny | 7 to 10 mph NE | 0% |
| Friday Night | 58°F | Mostly Clear | 10 mph NE | 1% |
| Saturday | 92°F | Sunny | 8 to 13 mph NE | 0% |
| Saturday Night | 58°F | Mostly Clear | 8 to 13 mph NE | 1% |
| Sunday | 90°F | Mostly Sunny | 8 to 16 mph E | 10% |
| Sunday Night | 58°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 10 to 16 mph E | 30% |
| Monday | 86°F | Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms | 10 to 15 mph E | 19% |
| Monday Night | 58°F | Chance Showers And Thunderstorms | 10 to 15 mph E | 29% |
Forecast source: National Weather Service (api.weather.gov) for South Heart (46.868, -102.991). Updated through the day.
Growing snapshot for South Heart
Last spring frost
May 18
First fall frost
Sep 25
Growing season
129 days
Hardiness zone
4b
More local growing data for South Heart: nearby ZIP 58655 weather · frost dates · planting calendar · North Dakota frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Theodore Roosevelt Ap, Nd (11.2 mi from South Heart). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.