Fortuna, ND Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Fortuna, a city in Divide County, North Dakota.
Overnight
38°F
Mostly Clear
Mostly clear. Low around 38, with temperatures rising to around 43 overnight. West wind around 8 mph.
7-day forecast for Fortuna
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 38°F | Mostly Clear | 8 mph W | 0% |
| Tuesday | 69°F | Mostly Sunny | 7 to 17 mph W | 0% |
| Tuesday Night | 49°F | Partly Cloudy | 6 to 15 mph SW | 1% |
| Wednesday | 77°F | Partly Sunny | 10 to 21 mph SW | 8% |
| Wednesday Night | 51°F | Partly Cloudy | 6 to 21 mph W | 8% |
| Thursday | 81°F | Sunny | 7 to 15 mph W | 2% |
| Thursday Night | 53°F | Mostly Clear | 8 to 15 mph N | 2% |
| Friday | 77°F | Sunny | 9 mph N | 1% |
| Friday Night | 52°F | Mostly Clear | 9 mph NE | 7% |
| Saturday | 78°F | Mostly Sunny | 8 to 12 mph NE | 7% |
| Saturday Night | 54°F | Partly Cloudy | 8 to 13 mph NE | 4% |
| Sunday | 76°F | Partly Sunny | 8 to 16 mph NE | 11% |
| Sunday Night | 53°F | Chance Showers And Thunderstorms | 10 to 15 mph NE | 25% |
| Monday | 76°F | Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms | 10 to 14 mph NE | 24% |
Forecast source: National Weather Service (api.weather.gov) for Fortuna (48.910, -103.779). Updated through the day.
Growing snapshot for Fortuna
Last spring frost
May 19
First fall frost
Sep 17
Growing season
121 days
Hardiness zone
3b
More local growing data for Fortuna: nearby ZIP 58844 weather · frost dates · planting calendar · North Dakota frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Fortuna 1 W, Nd (2.9 mi from Fortuna). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.