Portland, ND Weather & Growing Conditions
Overnight
34°F
Patchy Fog
Patchy fog. Cloudy. Low around 34, with temperatures rising to around 38 overnight. North northwest wind around 16 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 34°F | Patchy Fog | 16 mph NNW | 7% |
| Wednesday | 46°F | Patchy Fog then Mostly Cloudy | 16 to 20 mph NNW | 5% |
| Wednesday Night | 28°F | Mostly Cloudy | 17 mph N | 0% |
| Thursday | 39°F | Mostly Cloudy | 8 to 17 mph N | 0% |
| Thursday Night | 19°F | Partly Cloudy | 1 to 6 mph ESE | 0% |
| Friday | 44°F | Mostly Sunny | 2 to 14 mph S | 0% |
| Friday Night | 26°F | Partly Cloudy | 9 mph SSW | 0% |
| Saturday | 54°F | Mostly Sunny | 8 to 16 mph SW | 2% |
| Saturday Night | 32°F | Mostly Clear | 7 to 13 mph W | 0% |
| Sunday | 54°F | Sunny | 7 to 12 mph SW | 0% |
| Sunday Night | 34°F | Partly Cloudy | 9 mph SW | 0% |
| Monday | 57°F | Mostly Sunny | 10 to 22 mph WNW | 1% |
| Monday Night | 31°F | Mostly Clear | 6 to 12 mph WNW | 0% |
| Tuesday | 51°F | Mostly Sunny | 6 to 10 mph WSW | 1% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Portland, ND
Last spring frost
May 13
First fall frost
Sep 27
Growing season
136 days
Hardiness zone
4a
Explore more for Portland, ND: full frost dates · planting calendar · North Dakota frost dates
Climate data from the nearest NOAA station, Mayville, Nd (6.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.