Calvin, ND Weather & Growing Conditions
Today
66°F
Patchy Fog then Mostly Cloudy
Patchy fog and a slight chance of rain showers before 11am. Mostly cloudy. High near 66, with temperatures falling to around 64 in the afternoon. North wind 2 to 16 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 66°F | Patchy Fog then Mostly Cloudy | 2 to 16 mph N | 23% |
| Tonight | 42°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 | 69°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 | 13 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). Updated through the day.
Growing snapshot for Calvin, ND
Last spring frost
May 18
First fall frost
Sep 23
Growing season
127 days
Hardiness zone
3b
Explore more for Calvin, ND: full frost dates · planting calendar · North Dakota frost dates
Climate data from the nearest NOAA station, Hansboro 4 Nne, Nd (22.1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.