St. John, ND Weather & Growing Conditions
Overnight
55°F
Patchy Fog
Patchy fog and a slight chance of drizzle. Cloudy, with a low around 55. West wind around 1 mph. Chance of precipitation is 20%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 55°F | Patchy Fog | 1 mph W | 22% |
| Saturday | 62°F | Chance Rain Showers then Patchy Fog | 3 to 15 mph N | 26% |
| Saturday Night | 41°F | Mostly Cloudy | 7 to 14 mph NE | 1% |
| Sunday | 61°F | Mostly Cloudy | 9 mph E | 2% |
| Sunday Night | 40°F | Partly Cloudy | 6 mph SE | 0% |
| Monday | 64°F | Sunny | 5 to 9 mph S | 0% |
| Monday Night | 44°F | Mostly Clear | 7 to 12 mph S | 0% |
| Tuesday | 64°F | Mostly Sunny | 10 to 20 mph S | 0% |
| Tuesday Night | 49°F | Partly Cloudy | 15 to 18 mph S | 4% |
| Wednesday | 66°F | Mostly Sunny | 17 mph S | 4% |
| Wednesday Night | 52°F | Partly Cloudy | 10 to 16 mph S | 9% |
| Thursday | 70°F | Mostly Sunny | 10 to 14 mph S | 9% |
| Thursday Night | 54°F | Partly Cloudy | 10 to 14 mph S | 7% |
| Friday | 69°F | Mostly Sunny | 13 to 18 mph S | 11% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for St. John, ND
Last spring frost
May 19
First fall frost
Sep 24
Growing season
126 days
Hardiness zone
3b
Explore more for St. John, ND: full frost dates · planting calendar · North Dakota frost dates
Climate data from the nearest NOAA station, Belcourt Keya Radio, Nd (8.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.