Lebanon, NJ Weather & Growing Conditions
Tonight
58°F
Mostly Cloudy then Slight Chance Rain Showers
A slight chance of rain showers after 5am. Mostly cloudy, with a low around 58. East wind 0 to 5 mph. Chance of precipitation is 20%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 58°F | Mostly Cloudy then Slight Chance Rain Showers | 0 to 5 mph E | 19% |
| Sunday | 73°F | Rain Showers | 5 mph SE | 94% |
| Sunday Night | 56°F | Showers And Thunderstorms then Mostly Cloudy | 0 to 5 mph N | 84% |
| Monday | 70°F | Partly Sunny then Slight Chance Rain Showers | 5 mph NE | 24% |
| Monday Night | 51°F | Chance Rain Showers | 5 mph NE | 30% |
| Tuesday | 64°F | Chance Rain Showers | 5 to 10 mph NE | 34% |
| Tuesday Night | 50°F | Chance Rain Showers then Mostly Cloudy | 5 to 10 mph NE | 33% |
| Wednesday | 64°F | Slight Chance Rain Showers | 10 mph NE | 19% |
| Wednesday Night | 49°F | Slight Chance Rain Showers | 5 to 10 mph NE | 21% |
| Thursday | 62°F | Chance Rain Showers | 10 mph NE | 26% |
| Thursday Night | 49°F | Chance Rain Showers | 5 to 10 mph NE | 32% |
| Friday | 66°F | Chance Rain Showers | 10 mph N | 34% |
| Friday Night | 50°F | Chance Rain Showers | 5 to 10 mph N | 34% |
| Saturday | 70°F | Chance Rain Showers | 5 to 10 mph N | 30% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Lebanon, NJ
Last spring frost
Apr 24
First fall frost
Oct 21
Growing season
179 days
Hardiness zone
7a
Explore more for Lebanon, NJ: full frost dates · planting calendar · New Jersey frost dates
Climate data from the nearest NOAA station, Flemington 5 Nnw, Nj (6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.