Calvin, ND Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Calvin, a city in Cavalier County, North Dakota.
Today
66°F
Slight Chance Rain Showers then Partly Sunny
A slight chance of rain showers before 11am. Partly sunny. High near 66, with temperatures falling to around 64 in the afternoon. North northeast wind 10 to 16 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Calvin
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 66°F | Slight Chance Rain Showers then Partly Sunny | 10 to 16 mph NNE | 20% |
| Tonight | 41°F | Partly Cloudy | 8 to 15 mph NE | 0% |
| Sunday | 63°F | Mostly Cloudy | 9 mph ENE | 0% |
| Sunday Night | 38°F | Partly Cloudy | 7 mph ESE | 0% |
| Monday | 67°F | Sunny | 3 to 9 mph SSE | 0% |
| Monday Night | 41°F | Mostly Clear | 7 to 10 mph SSE | 0% |
| Tuesday | 67°F | Sunny | 10 to 22 mph S | 0% |
| Tuesday Night | 47°F | Mostly Clear | 15 to 18 mph SSE | 4% |
| Wednesday | 68°F | Mostly Sunny | 17 to 21 mph S | 5% |
| Wednesday Night | 50°F | Partly Cloudy | 13 to 16 mph SSE | 12% |
| Thursday | 71°F | Mostly Sunny | 12 to 16 mph SSE | 12% |
| Thursday Night | 52°F | Partly Cloudy | 14 mph S | 9% |
| Friday | 72°F | Partly Sunny | 13 to 21 mph S | 9% |
| Friday Night | 53°F | Mostly Cloudy then Slight Chance Rain Showers | 16 to 20 mph S | 16% |
Forecast source: National Weather Service (api.weather.gov) for Calvin (48.852, -98.938). Updated through the day.
Growing snapshot for Calvin
Last spring frost
May 18
First fall frost
Sep 23
Growing season
127 days
Hardiness zone
3b
More local growing data for Calvin: nearby ZIP 58323 weather · frost dates · planting calendar · North Dakota frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Hansboro 4 Nne, Nd (22.1 mi from Calvin). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.