St. John, ND Weather & Growing Conditions
Tonight
31°F
Patchy Fog
Patchy fog. Mostly cloudy. Low around 31, with temperatures rising to around 33 overnight. North wind 6 to 17 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 31°F | Patchy Fog | 6 to 17 mph N | 0% |
| Wednesday | 46°F | Patchy Fog then Mostly Sunny | 8 to 12 mph N | 0% |
| Wednesday Night | 28°F | Mostly Cloudy | 9 to 13 mph N | 1% |
| Thursday | 38°F | Partly Sunny | 5 to 12 mph E | 1% |
| Thursday Night | 26°F | Partly Cloudy | 5 to 13 mph S | 0% |
| Friday | 45°F | Mostly Sunny | 9 to 13 mph SW | 0% |
| Friday Night | 33°F | Mostly Clear | 12 mph SW | 0% |
| Saturday | 49°F | Mostly Sunny | 13 to 18 mph W | 8% |
| Saturday Night | 33°F | Partly Cloudy | 8 to 15 mph W | 5% |
| Sunday | 50°F | Mostly Sunny | 8 to 13 mph SW | 0% |
| Sunday Night | 38°F | Partly Cloudy | 13 to 20 mph SW | 1% |
| Monday | 49°F | Mostly Sunny | 17 to 24 mph W | 0% |
| Monday Night | 33°F | Partly Cloudy | 8 to 15 mph W | 0% |
| Tuesday | 47°F | Mostly Sunny | 8 to 13 mph W | 0% |
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 Nov 4, 2026.