Caldwell, NJ Weather & Growing Conditions
Overnight
55°F
Mostly Cloudy
Mostly cloudy, with a low around 55. Northeast wind around 6 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 55°F | Mostly Cloudy | 6 mph NE | 0% |
| Saturday | 72°F | Mostly Sunny | 8 mph E | 0% |
| Saturday Night | 58°F | Mostly Cloudy then Chance Rain Showers | 3 to 8 mph SE | 36% |
| Sunday | 70°F | Showers And Thunderstorms | 5 to 9 mph SE | 88% |
| Sunday Night | 58°F | Showers And Thunderstorms | 1 to 10 mph NW | 88% |
| Monday | 67°F | Chance Rain Showers | 8 to 12 mph N | 39% |
| Monday Night | 53°F | Chance Rain Showers | 7 to 10 mph NE | 33% |
| Tuesday | 62°F | Chance Rain Showers | 13 mph NE | 30% |
| Tuesday Night | 50°F | Chance Rain Showers | 13 mph NE | 30% |
| Wednesday | 62°F | Slight Chance Rain Showers | 12 to 15 mph NE | 23% |
| Wednesday Night | 51°F | Chance Rain Showers | 14 mph NE | 36% |
| Thursday | 62°F | Chance Rain Showers | 12 to 15 mph NE | 33% |
| Thursday Night | 52°F | Chance Showers And Thunderstorms | 8 to 12 mph N | 34% |
| Friday | 68°F | Chance Rain Showers | 12 mph N | 31% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Caldwell, NJ
Last spring frost
Apr 18
First fall frost
Oct 24
Growing season
187 days
Hardiness zone
7a
Explore more for Caldwell, NJ: full frost dates · planting calendar · New Jersey frost dates
Climate data from the nearest NOAA station, Essex Fells Service Bldg, Nj (1.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.