Portal, ND Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Portal, a city in Burke County, North Dakota.
Tonight
25°F
Mostly Clear
Mostly clear. Low around 25, with temperatures rising to around 27 overnight. West wind around 5 mph.
7-day forecast for Portal
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 25°F | Mostly Clear | 5 mph W | 0% |
| Wednesday | 51°F | Sunny | 7 mph NW | 0% |
| Wednesday Night | 23°F | Partly Cloudy | 5 mph NE | 0% |
| Thursday | 43°F | Mostly Sunny | 3 to 8 mph SE | 0% |
| Thursday Night | 27°F | Partly Cloudy | 8 mph S | 0% |
| Friday | 52°F | Sunny | 7 to 10 mph SW | 0% |
| Friday Night | 33°F | Partly Cloudy | 7 to 15 mph SW | 3% |
| Saturday | 53°F | Mostly Sunny | 13 to 21 mph W | 4% |
| Saturday Night | 29°F | Mostly Clear | 7 to 10 mph SW | 1% |
| Sunday | 57°F | Mostly Sunny | 7 to 10 mph S | 0% |
| Sunday Night | 37°F | Partly Cloudy | 10 to 20 mph SW | 1% |
| Monday | 53°F | Sunny | 10 to 22 mph W | 0% |
| Monday Night | 30°F | Partly Cloudy | 8 mph W | 1% |
| Tuesday | 53°F | Mostly Sunny | 7 to 12 mph W | 0% |
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 Nov 4, 2026.