Petersburg, ND Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Petersburg, a city in Nelson County, North Dakota.
Tonight
52°F
Mostly Cloudy then Patchy Fog
Patchy fog after 1am. Mostly cloudy, with a low around 52. South southeast wind 3 to 9 mph.
7-day forecast for Petersburg
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 52°F | Mostly Cloudy then Patchy Fog | 3 to 9 mph SSE | 4% |
| Saturday | 67°F | Patchy Fog then Mostly Cloudy | 3 to 17 mph NNE | 14% |
| Saturday Night | 47°F | Mostly Cloudy | 13 to 18 mph NNE | 2% |
| Sunday | 65°F | Mostly Cloudy | 14 mph NE | 1% |
| Sunday Night | 45°F | Mostly Cloudy | 5 to 10 mph E | 1% |
| Monday | 67°F | Sunny | 5 to 12 mph ESE | 1% |
| Monday Night | 43°F | Mostly Clear | 9 mph SSE | 0% |
| Tuesday | 67°F | Mostly Sunny | 9 to 21 mph SSE | 0% |
| Tuesday Night | 47°F | Partly Cloudy | 17 mph SSE | 5% |
| Wednesday | 69°F | Partly Sunny | 16 to 22 mph SSE | 13% |
| Wednesday Night | 51°F | Slight Chance Rain Showers | 14 to 18 mph S | 15% |
| Thursday | 72°F | Mostly Sunny | 15 mph S | 13% |
| Thursday Night | 52°F | Mostly Clear | 13 mph SSE | 10% |
| Friday | 72°F | Mostly Sunny | 10 to 20 mph S | 9% |
Forecast source: National Weather Service (api.weather.gov) for Petersburg (48.018, -98.001). Updated through the day.
Growing snapshot for Petersburg
Last spring frost
May 11
First fall frost
Sep 28
Growing season
138 days
Hardiness zone
4a
More local growing data for Petersburg: nearby ZIP 58272 weather · frost dates · planting calendar · North Dakota frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Petersburg 2 N, Nd (2.2 mi from Petersburg). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.