Demarest, 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 | 67°F | Mostly Cloudy | 3 mph SE | 3% |
| Wednesday | 83°F | Partly Sunny then Chance Showers And Thunderstorms | 2 to 6 mph SE | 31% |
| Wednesday Night | 72°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 2 to 6 mph S | 32% |
| Thursday | 89°F | Chance Showers And Thunderstorms | 2 to 8 mph SW | 45% |
| Thursday Night | 74°F | Chance Showers And Thunderstorms then Partly Cloudy | 3 to 7 mph SW | 44% |
| Friday | 90°F | Mostly Sunny then Chance Showers And Thunderstorms | 3 to 7 mph SW | 44% |
| Friday Night | 73°F | Chance Showers And Thunderstorms | 2 to 6 mph SW | 42% |
| Saturday | 88°F | Partly Sunny then Chance Showers And Thunderstorms | 2 to 7 mph SW | 34% |
| Saturday Night | 72°F | Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms | 2 to 7 mph W | 34% |
| Sunday | 89°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 2 to 7 mph W | 15% |
| Sunday Night | 73°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 6 mph SW | 15% |
| Monday | 90°F | Sunny | 3 to 9 mph W | 13% |
| Monday Night | 72°F | Partly Cloudy | 5 to 8 mph W | 13% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Demarest, NJ
Last spring frost
Apr 20
First fall frost
Oct 26
Growing season
189 days
Hardiness zone
7b
Explore more for Demarest, NJ: full frost dates · planting calendar · New Jersey frost dates
Climate data from the nearest NOAA station, Dobbs Ferry-Ardsley, Ny (7.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.