Perth, ND Weather & Growing Conditions
This Afternoon
70°F
Mostly Cloudy
Mostly cloudy, with a high near 70. South wind around 10 mph. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 70°F | Mostly Cloudy | 10 mph S | 13% |
| Tonight | 52°F | Slight Chance Rain Showers then Patchy Fog | 3 to 9 mph S | 18% |
| Saturday | 65°F | Patchy Fog then Mostly Cloudy | 2 to 15 mph NNE | 18% |
| Saturday Night | 43°F | Mostly Cloudy | 8 to 14 mph NE | 0% |
| Sunday | 63°F | Mostly Cloudy | 9 mph ENE | 1% |
| Sunday Night | 40°F | Partly Cloudy | 6 mph ESE | 1% |
| Monday | 65°F | Sunny | 3 to 10 mph SE | 1% |
| Monday Night | 43°F | Mostly Clear | 9 mph SSE | 0% |
| Tuesday | 66°F | Mostly Sunny | 9 to 21 mph SSE | 1% |
| Tuesday Night | 48°F | Partly Cloudy | 16 mph SSE | 5% |
| Wednesday | 68°F | Partly Sunny | 14 to 20 mph S | 12% |
| Wednesday Night | 51°F | Partly Cloudy | 10 to 14 mph S | 13% |
| Thursday | 71°F | Mostly Sunny | 12 mph S | 10% |
| Thursday Night | 52°F | Mostly Clear | 10 mph SSE | 9% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Perth, ND
Last spring frost
May 20
First fall frost
Sep 26
Growing season
128 days
Hardiness zone
3b
Explore more for Perth, ND: full frost dates · planting calendar · North Dakota frost dates
Climate data from the nearest NOAA station, Rolla 1Ne, Nd (9.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.