Portal, ND Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Portal, a city in Burke County, North Dakota.
Overnight
42°F
Mostly Clear
Mostly clear, with a low around 42. West wind around 9 mph, with gusts as high as 18 mph.
7-day forecast for Portal
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 42°F | Mostly Clear | 9 mph W | 0% |
| Tuesday | 69°F | Sunny | 8 to 16 mph W | 0% |
| Tuesday Night | 49°F | Mostly Clear | 6 to 13 mph W | 1% |
| Wednesday | 76°F | Mostly Sunny | 12 to 18 mph W | 6% |
| Wednesday Night | 51°F | Partly Cloudy | 7 to 16 mph W | 8% |
| Thursday | 79°F | Sunny | 8 to 15 mph W | 1% |
| Thursday Night | 52°F | Mostly Clear | 7 to 12 mph N | 2% |
| Friday | 76°F | Sunny | 6 to 9 mph NW | 0% |
| Friday Night | 51°F | Mostly Clear | 5 to 8 mph NE | 8% |
| Saturday | 78°F | Mostly Sunny | 6 to 9 mph NE | 8% |
| Saturday Night | 52°F | Partly Cloudy | 6 to 10 mph NE | 10% |
| Sunday | 75°F | Partly Sunny | 6 to 12 mph NE | 10% |
| Sunday Night | 53°F | Chance Rain Showers | 9 to 14 mph NE | 28% |
| Monday | 76°F | Chance Showers And Thunderstorms then Partly Sunny | 10 mph NE | 28% |
Forecast source: National Weather Service (api.weather.gov) for Portal (48.994, -102.548). Updated through the day.
Growing snapshot for Portal
Last spring frost
May 20
First fall frost
Sep 19
Growing season
121 days
Hardiness zone
3b
More local growing data for Portal: nearby ZIP 58772 weather · frost dates · planting calendar · North Dakota frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Northgate 5 Ese, Nd (21 mi from Portal). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.