Calvin, ND Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Calvin, a city in Cavalier County, North Dakota.
Tonight
52°F
Mostly Cloudy then Patchy Fog
Patchy fog between 1am and 5am, then patchy fog and a slight chance of rain showers. Mostly cloudy. Low around 52, with temperatures rising to around 54 overnight. South southwest wind 3 to 9 mph. Chance of precipitation is 20%.
7-day forecast for Calvin
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 52°F | Mostly Cloudy then Patchy Fog | 3 to 9 mph SSW | 22% |
| Saturday | 66°F | Patchy Fog then Mostly Cloudy | 2 to 15 mph N | 17% |
| Saturday Night | 43°F | Mostly Cloudy | 9 to 15 mph NE | 0% |
| Sunday | 64°F | Mostly Cloudy | 9 mph ENE | 1% |
| Sunday Night | 40°F | Partly Cloudy | 7 mph ESE | 1% |
| Monday | 67°F | Sunny | 5 to 9 mph SE | 1% |
| Monday Night | 43°F | Mostly Clear | 7 to 10 mph SSE | 0% |
| Tuesday | 67°F | Mostly Sunny | 10 to 21 mph SSE | 1% |
| Tuesday Night | 48°F | Partly Cloudy | 17 mph SSE | 3% |
| Wednesday | 69°F | Partly Sunny | 15 to 20 mph S | 11% |
| Wednesday Night | 51°F | Partly Cloudy | 13 to 16 mph S | 11% |
| Thursday | 72°F | Mostly Sunny | 14 mph S | 10% |
| Thursday Night | 52°F | Mostly Clear | 12 mph SSE | 8% |
| Friday | 72°F | Mostly Sunny | 10 to 17 mph S | 7% |
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.