Greenwich, NJ Weather & Growing Conditions
Today
85°F
Mostly Sunny
Mostly sunny, with a high near 85. East wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 85°F | Mostly Sunny | 5 mph E | 0% |
| Tonight | 70°F | Mostly Cloudy then Slight Chance Rain Showers | 0 to 5 mph E | 20% |
| Wednesday | 84°F | Showers And Thunderstorms Likely | 5 to 10 mph SE | 72% |
| Wednesday Night | 75°F | Showers And Thunderstorms Likely then Partly Cloudy | 5 to 10 mph S | 65% |
| Thursday | 90°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 5 to 10 mph SW | 18% |
| Thursday Night | 76°F | Slight Chance Showers And Thunderstorms | 5 to 10 mph SW | 18% |
| Friday | 90°F | Sunny then Slight Chance Showers And Thunderstorms | 5 to 10 mph SW | 23% |
| Friday Night | 75°F | Chance Showers And Thunderstorms | 5 mph SW | 42% |
| Saturday | 88°F | Mostly Sunny then Chance Showers And Thunderstorms | 5 to 10 mph SW | 34% |
| Saturday Night | 73°F | Chance Showers And Thunderstorms | 5 mph SW | 34% |
| Sunday | 88°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 5 mph W | 20% |
| Sunday Night | 74°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 5 mph SW | 20% |
| Monday | 90°F | Sunny | 5 to 10 mph W | 8% |
| Monday Night | 74°F | Partly Cloudy | 5 to 10 mph W | 12% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Greenwich, NJ
Last spring frost
Apr 10
First fall frost
Nov 1
Growing season
205 days
Hardiness zone
7b
Explore more for Greenwich, NJ: full frost dates · planting calendar · New Jersey frost dates
Climate data from the nearest NOAA station, Seabrook Farms, Nj (10.1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.