St. Johnsbury, VT Weather & Growing Conditions
Today
73°F
Partly Sunny
Partly sunny. High near 73, with temperatures falling to around 66 in the afternoon. South wind around 3 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 73°F | Partly Sunny | 3 mph S | 2% |
| Tonight | 49°F | Mostly Cloudy | 5 mph S | 1% |
| Thursday | 63°F | Rain Showers | 6 mph S | 79% |
| Thursday Night | 50°F | Rain Showers Likely | 2 to 6 mph SW | 67% |
| Friday | 63°F | Patchy Fog then Mostly Cloudy | 2 mph SW | 12% |
| Friday Night | 47°F | Chance Light Rain | 2 mph N | 48% |
| Saturday | 57°F | Chance Light Rain | 2 mph N | 48% |
| Saturday Night | 39°F | Chance Light Rain | 3 mph NW | 50% |
| Sunday | 49°F | Chance Light Rain | 5 mph NW | 48% |
| Sunday Night | 32°F | Slight Chance Light Rain | 2 mph W | 21% |
| Monday | 45°F | Chance Light Rain | 2 to 7 mph W | 33% |
| Monday Night | 28°F | Slight Chance Light Rain then Mostly Cloudy | 3 mph W | 23% |
| Tuesday | 48°F | Chance Light Rain | 2 to 6 mph SW | 31% |
| Tuesday Night | 27°F | Chance Light Rain | 3 mph W | 31% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for St. Johnsbury, VT
Last spring frost
May 13
First fall frost
Oct 3
Growing season
143 days
Hardiness zone
4b
Explore more for St. Johnsbury, VT: full frost dates · planting calendar · Vermont frost dates
Climate data from the nearest NOAA station, Saint Johnsbury, Vt (2.1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.