Portal, ND Weather & Growing Conditions
Overnight
54°F
Patchy Drizzle
Patchy drizzle and patchy fog before 4am, then patchy fog and a slight chance of drizzle. Cloudy. Low around 54, with temperatures rising to around 56 overnight. North wind around 9 mph. Chance of precipitation is 20%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 54°F | Patchy Drizzle | 9 mph N | 24% |
| Saturday | 64°F | Patchy Fog | 8 to 14 mph NE | 12% |
| Saturday Night | 45°F | Mostly Cloudy | 8 to 12 mph E | 4% |
| Sunday | 63°F | Mostly Cloudy | 10 mph E | 5% |
| Sunday Night | 44°F | Mostly Clear | 8 mph SE | 0% |
| Monday | 68°F | Sunny | 6 to 12 mph SE | 0% |
| Monday Night | 48°F | Mostly Clear | 8 to 12 mph SE | 0% |
| Tuesday | 70°F | Mostly Sunny | 12 to 20 mph S | 2% |
| Tuesday Night | 52°F | Partly Cloudy | 12 to 15 mph SE | 2% |
| Wednesday | 73°F | Mostly Sunny | 13 mph S | 4% |
| Wednesday Night | 53°F | Mostly Clear | 7 to 10 mph SE | 8% |
| Thursday | 76°F | Mostly Sunny | 7 to 10 mph S | 8% |
| Thursday Night | 54°F | Mostly Clear | 10 mph SE | 5% |
| Friday | 74°F | Mostly Sunny | 9 to 16 mph SE | 7% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Portal, ND
Last spring frost
May 20
First fall frost
Sep 19
Growing season
121 days
Hardiness zone
3b
Explore more for Portal, ND: full frost dates · planting calendar · North Dakota frost dates
Climate data from the nearest NOAA station, Northgate 5 Ese, Nd (21 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.