Grafton, ND Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Grafton, a city in Walsh County, North Dakota.
Overnight
53°F
Mostly Clear
Mostly clear, with a low around 53. West wind around 10 mph. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Grafton
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 53°F | Mostly Clear | 10 mph W | 0% |
| Tuesday | 72°F | Sunny | 10 to 15 mph WNW | 0% |
| Tuesday Night | 49°F | Mostly Clear | 5 to 12 mph WSW | 1% |
| Wednesday | 81°F | Mostly Sunny | 8 to 17 mph SW | 0% |
| Wednesday Night | 56°F | Slight Chance Rain Showers | 9 to 13 mph SW | 20% |
| Thursday | 83°F | Sunny | 8 to 15 mph W | 9% |
| Thursday Night | 57°F | Mostly Clear | 7 to 12 mph W | 4% |
| Friday | 80°F | Sunny | 7 to 14 mph NW | 4% |
| Friday Night | 54°F | Mostly Clear | 5 to 12 mph NNW | 6% |
| Saturday | 81°F | Mostly Sunny | 5 to 13 mph NNW | 6% |
| Saturday Night | 55°F | Partly Cloudy | 5 to 12 mph N | 11% |
| Sunday | 78°F | Mostly Sunny | 5 to 12 mph NNW | 11% |
| Sunday Night | 56°F | Partly Cloudy then Chance Rain Showers | 5 to 12 mph N | 25% |
| Monday | 78°F | Chance Rain Showers then Partly Sunny | 5 to 10 mph N | 25% |
Forecast source: National Weather Service (api.weather.gov) for Grafton (48.414, -97.406). Updated through the day.
Growing snapshot for Grafton
Last spring frost
May 4
First fall frost
Oct 7
Growing season
156 days
Hardiness zone
4a
More local growing data for Grafton: nearby ZIP 58237 weather · frost dates · planting calendar · North Dakota frost dates
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Climate data from the nearest NOAA station, Grafton, Nd (1.1 mi from Grafton). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.