Calvin, ND Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Calvin, a city in Cavalier County, North Dakota.
Tonight
26°F
Mostly Cloudy then Patchy Fog
Patchy fog between midnight and 4am. Mostly cloudy. Low around 26, with temperatures rising to around 29 overnight. North wind around 9 mph.
7-day forecast for Calvin
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 26°F | Mostly Cloudy then Patchy Fog | 9 mph N | 0% |
| Wednesday | 47°F | Mostly Sunny | 9 to 15 mph N | 0% |
| Wednesday Night | 26°F | Mostly Cloudy | 14 mph N | 1% |
| Thursday | 39°F | Partly Sunny | 3 to 14 mph NE | 1% |
| Thursday Night | 21°F | Partly Cloudy | 3 to 10 mph SSE | 0% |
| Friday | 46°F | Mostly Sunny | 10 to 14 mph SSW | 0% |
| Friday Night | 28°F | Partly Cloudy | 10 mph SW | 0% |
| Saturday | 52°F | Mostly Sunny | 10 to 20 mph WSW | 9% |
| Saturday Night | 29°F | Partly Cloudy | 8 to 13 mph W | 6% |
| Sunday | 52°F | Mostly Sunny | 8 to 12 mph SW | 1% |
| Sunday Night | 35°F | Mostly Cloudy | 12 to 16 mph SW | 1% |
| Monday | 53°F | Mostly Sunny | 16 to 26 mph W | 0% |
| Monday Night | 29°F | Partly Cloudy | 7 to 13 mph W | 0% |
| Tuesday | 49°F | Mostly Sunny | 7 to 13 mph W | 0% |
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 Nov 4, 2026.