Lebanon, NH Weather & Growing Conditions
Tonight
46°F
Mostly Cloudy
Mostly cloudy, with a low around 46. South wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 46°F | Mostly Cloudy | 5 mph S | 3% |
| Wednesday | 72°F | Partly Sunny | 0 to 5 mph SW | 4% |
| Wednesday Night | 51°F | Partly Cloudy | 5 mph S | 1% |
| Thursday | 66°F | Light Rain Likely | 5 mph S | 69% |
| Thursday Night | 55°F | Scattered Rain Showers | 0 to 5 mph SW | 32% |
| Friday | 64°F | Chance Light Rain | 0 mph | 52% |
| Friday Night | 49°F | Light Rain Likely | 0 to 5 mph N | 72% |
| Saturday | 58°F | Light Rain Likely | 0 to 5 mph NW | 65% |
| Saturday Night | 40°F | Chance Light Rain | 5 mph W | 51% |
| Sunday | 53°F | Chance Light Rain | 5 mph W | 28% |
| Sunday Night | 34°F | Mostly Cloudy | 5 mph W | 11% |
| Monday | 51°F | Slight Chance Light Rain | 5 to 10 mph W | 24% |
| Monday Night | 31°F | Slight Chance Light Rain | 5 mph W | 24% |
| Tuesday | 52°F | Slight Chance Light Rain | 5 to 10 mph SW | 21% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Lebanon, NH
Last spring frost
May 8
First fall frost
Oct 6
Growing season
150 days
Hardiness zone
5a
Explore more for Lebanon, NH: full frost dates · planting calendar · New Hampshire frost dates
Climate data from the nearest NOAA station, N Hartland Lake, Vt (4.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.