Arthur, ND Weather & Growing Conditions
Tonight
52°F
Mostly Cloudy then Patchy Fog
Patchy fog after 1am. Mostly cloudy, with a low around 52. East wind 6 to 12 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 52°F | Mostly Cloudy then Patchy Fog | 6 to 12 mph E | 3% |
| Saturday | 72°F | Patchy Fog then Mostly Cloudy | 6 to 15 mph NE | 4% |
| Saturday Night | 50°F | Mostly Cloudy | 10 to 16 mph NNE | 0% |
| Sunday | 69°F | Mostly Cloudy | 14 mph NE | 0% |
| Sunday Night | 45°F | Mostly Cloudy | 5 to 12 mph E | 0% |
| Monday | 69°F | Mostly Sunny | 5 to 9 mph ESE | 0% |
| Monday Night | 42°F | Mostly Clear | 8 mph SE | 0% |
| Tuesday | 70°F | Mostly Sunny | 7 to 20 mph SSE | 0% |
| Tuesday Night | 46°F | Partly Cloudy | 13 to 16 mph SSE | 3% |
| Wednesday | 71°F | Mostly Sunny | 13 to 21 mph SSE | 8% |
| Wednesday Night | 50°F | Mostly Cloudy then Slight Chance Rain Showers | 12 to 18 mph SSE | 16% |
| Thursday | 75°F | Slight Chance Rain Showers then Mostly Sunny | 12 to 15 mph S | 16% |
| Thursday Night | 52°F | Mostly Clear | 8 to 12 mph SSE | 8% |
| Friday | 76°F | Mostly Sunny | 8 to 18 mph SSE | 8% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Arthur, ND
Last spring frost
May 9
First fall frost
Oct 1
Growing season
143 days
Hardiness zone
4a
Explore more for Arthur, ND: full frost dates · planting calendar · North Dakota frost dates
Climate data from the nearest NOAA station, Casselton Agronomy Farm, Nd (15.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.