St. John, ND Weather & Growing Conditions
Today
67°F
Mostly Sunny
Mostly sunny, with a high near 67. West wind 7 to 15 mph, with gusts as high as 25 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 67°F | Mostly Sunny | 7 to 15 mph W | 0% |
| Tonight | 51°F | Mostly Clear | 6 to 14 mph W | 0% |
| Wednesday | 76°F | Mostly Sunny | 10 to 17 mph SW | 9% |
| Wednesday Night | 55°F | Slight Chance Showers And Thunderstorms | 8 to 16 mph W | 17% |
| Thursday | 78°F | Sunny | 9 to 15 mph W | 1% |
| Thursday Night | 56°F | Mostly Clear | 8 to 13 mph NW | 3% |
| Friday | 75°F | Sunny | 8 to 13 mph NW | 3% |
| Friday Night | 54°F | Partly Cloudy | 5 to 10 mph N | 8% |
| Saturday | 76°F | Mostly Sunny | 5 to 10 mph N | 8% |
| Saturday Night | 54°F | Partly Cloudy | 5 to 10 mph N | 13% |
| Sunday | 73°F | Mostly Sunny | 6 to 9 mph N | 13% |
| Sunday Night | 55°F | Chance Rain Showers | 6 to 10 mph NE | 30% |
| Monday | 74°F | Chance Rain Showers | 6 to 9 mph NE | 30% |
| Monday Night | 55°F | Slight Chance Rain Showers | 6 to 9 mph NE | 20% |
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 Aug 4, 2026.