Grafton, ND Weather & Growing Conditions
Tonight
52°F
Mostly Cloudy
Mostly cloudy. Low around 52, with temperatures rising to around 54 overnight. South wind 2 to 8 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 52°F | Mostly Cloudy | 2 to 8 mph S | 4% |
| Saturday | 70°F | Slight Chance Rain Showers then Mostly Cloudy | 1 to 15 mph SW | 21% |
| Saturday Night | 47°F | Mostly Cloudy | 8 to 15 mph NNE | 0% |
| Sunday | 68°F | Mostly Cloudy | 9 mph NE | 0% |
| Sunday Night | 44°F | Mostly Cloudy | 2 to 8 mph E | 0% |
| Monday | 69°F | Sunny | 2 to 9 mph ESE | 0% |
| Monday Night | 43°F | Mostly Clear | 8 mph SSE | 0% |
| Tuesday | 70°F | Sunny | 8 to 18 mph SSE | 0% |
| Tuesday Night | 47°F | Partly Cloudy | 15 mph SSE | 2% |
| Wednesday | 71°F | Partly Sunny | 14 to 20 mph SSE | 10% |
| Wednesday Night | 51°F | Mostly Cloudy | 12 to 16 mph S | 13% |
| Thursday | 74°F | Mostly Sunny | 10 to 14 mph S | 12% |
| Thursday Night | 52°F | Mostly Clear | 8 to 12 mph SSE | 9% |
| Friday | 75°F | Mostly Sunny | 8 to 17 mph S | 9% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Grafton, ND
Last spring frost
May 4
First fall frost
Oct 7
Growing season
156 days
Hardiness zone
4a
Explore more for Grafton, ND: full frost dates · planting calendar · North Dakota frost dates
Climate data from the nearest NOAA station, Grafton, Nd (1.1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.