Caldwell, NJ Weather & Growing Conditions
Today
84°F
Mostly Sunny
Mostly sunny, with a high near 84. Northeast wind around 3 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 84°F | Mostly Sunny | 3 mph NE | 0% |
| Tonight | 65°F | Mostly Cloudy | 3 mph NW | 3% |
| Wednesday | 83°F | Partly Sunny then Chance Showers And Thunderstorms | 5 mph E | 39% |
| Wednesday Night | 70°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 5 mph S | 36% |
| Thursday | 88°F | Slight Chance Rain Showers then Chance Showers And Thunderstorms | 2 to 8 mph SW | 45% |
| Thursday Night | 72°F | Chance Showers And Thunderstorms then Partly Cloudy | 2 to 7 mph SW | 45% |
| Friday | 88°F | Mostly Sunny then Chance Showers And Thunderstorms | 2 to 7 mph SW | 46% |
| Friday Night | 71°F | Chance Showers And Thunderstorms | 1 to 6 mph W | 44% |
| Saturday | 86°F | Partly Sunny then Chance Showers And Thunderstorms | 1 to 8 mph W | 37% |
| Saturday Night | 70°F | Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms | 1 to 6 mph W | 37% |
| Sunday | 87°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 1 to 7 mph W | 15% |
| Sunday Night | 71°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 2 to 6 mph SW | 15% |
| Monday | 89°F | Mostly Sunny | 2 to 9 mph W | 12% |
| Monday Night | 70°F | Partly Cloudy | 3 to 8 mph W | 12% |
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 Aug 4, 2026.