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.
This Afternoon
74°F
Partly Sunny
Partly sunny. High near 74, with temperatures falling to around 69 in the afternoon. Southeast wind around 9 mph, with gusts as high as 18 mph.
7-day forecast for South Heart
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 74°F | Partly Sunny | 9 mph SE | 1% |
| Tonight | 55°F | Mostly Cloudy then Patchy Fog | 3 to 9 mph SE | 8% |
| Saturday | 64°F | Rain Showers Likely | 3 to 13 mph E | 68% |
| Saturday Night | 50°F | Rain Showers | 14 mph E | 80% |
| Sunday | 61°F | Rain Showers Likely | 12 to 15 mph E | 62% |
| Sunday Night | 49°F | Slight Chance Rain Showers then Cloudy | 6 to 12 mph E | 19% |
| Monday | 67°F | Mostly Cloudy | 6 to 14 mph SE | 5% |
| Monday Night | 49°F | Mostly Cloudy | 14 mph SE | 2% |
| Tuesday | 72°F | Partly Sunny | 14 to 20 mph SE | 2% |
| Tuesday Night | 52°F | Partly Cloudy | 10 to 17 mph SE | 5% |
| Wednesday | 78°F | Mostly Sunny | 9 to 13 mph S | 9% |
| Wednesday Night | 53°F | Mostly Clear | 6 to 9 mph S | 12% |
| Thursday | 80°F | Sunny | 6 to 10 mph SE | 4% |
| Thursday Night | 53°F | Mostly Clear | 12 mph SE | 6% |
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 Sep 19, 2026.