Caldwell, NJ Weather & Growing Conditions
Tonight
50°F
Mostly Clear then Patchy Fog
Patchy fog after 1am. Mostly clear, with a low around 50. Southwest wind around 2 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 50°F | Mostly Clear then Patchy Fog | 2 mph SW | 2% |
| Wednesday | 75°F | Patchy Fog then Sunny | 1 to 9 mph SW | 3% |
| Wednesday Night | 57°F | Partly Cloudy | 5 mph S | 2% |
| Thursday | 72°F | Chance Rain Showers | 2 to 8 mph S | 50% |
| Thursday Night | 61°F | Rain Showers | 1 to 6 mph SW | 80% |
| Friday | 68°F | Rain Showers | 3 mph SW | 80% |
| Friday Night | 53°F | Showers And Thunderstorms | 3 mph N | 78% |
| Saturday | 65°F | Chance Rain Showers | 3 to 7 mph NW | 43% |
| Saturday Night | 42°F | Slight Chance Rain Showers | 7 mph NW | 15% |
| Sunday | 60°F | Slight Chance Rain Showers then Mostly Sunny | 5 to 8 mph W | 15% |
| Sunday Night | 39°F | Partly Cloudy then Slight Chance Light Rain | 6 mph W | 17% |
| Monday | 59°F | Slight Chance Light Rain | 6 to 13 mph NW | 22% |
| Monday Night | 38°F | Slight Chance Light Rain | 8 mph W | 22% |
| Tuesday | 61°F | Slight Chance Light Rain then Mostly Sunny | 8 to 13 mph W | 18% |
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 Nov 4, 2026.