Watchung, NJ Weather & Growing Conditions
Tonight
59°F
Mostly Cloudy
Mostly cloudy. Low around 59, with temperatures rising to around 61 overnight. Southeast wind around 6 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 59°F | Mostly Cloudy | 6 mph SE | 11% |
| Sunday | 71°F | Rain Showers | 5 to 8 mph SE | 86% |
| Sunday Night | 57°F | Showers And Thunderstorms | 5 to 10 mph W | 82% |
| Monday | 67°F | Chance Rain Showers | 6 to 10 mph NE | 25% |
| Monday Night | 52°F | Chance Rain Showers | 6 to 10 mph NE | 30% |
| Tuesday | 63°F | Chance Rain Showers | 10 mph NE | 31% |
| Tuesday Night | 50°F | Chance Rain Showers then Mostly Cloudy | 8 to 14 mph NE | 31% |
| Wednesday | 63°F | Mostly Cloudy then Slight Chance Rain Showers | 14 mph NE | 19% |
| Wednesday Night | 50°F | Slight Chance Rain Showers | 12 to 15 mph NE | 21% |
| Thursday | 61°F | Chance Rain Showers | 10 to 15 mph NE | 28% |
| Thursday Night | 50°F | Chance Rain Showers | 10 to 16 mph NE | 35% |
| Friday | 64°F | Chance Rain Showers | 10 to 15 mph N | 35% |
| Friday Night | 51°F | Chance Rain Showers | 10 to 15 mph N | 35% |
| Saturday | 67°F | Chance Rain Showers | 9 to 15 mph N | 30% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Watchung, NJ
Last spring frost
Apr 11
First fall frost
Oct 28
Growing season
198 days
Hardiness zone
7a
Explore more for Watchung, NJ: full frost dates · planting calendar · New Jersey frost dates
Climate data from the nearest NOAA station, Plainfield, Nj (3.2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.