Allamuchy, NJ Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Allamuchy, a community in Warren County, New Jersey.
Tonight
56°F
Mostly Cloudy then Chance Rain Showers
A chance of rain showers after 2am. Mostly cloudy, with a low around 56. Southeast wind around 0 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Allamuchy
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 56°F | Mostly Cloudy then Chance Rain Showers | 0 mph | 38% |
| Sunday | 71°F | Rain Showers | 5 mph SE | 97% |
| Sunday Night | 54°F | Showers And Thunderstorms then Mostly Cloudy | 0 to 5 mph NW | 78% |
| Monday | 69°F | Partly Sunny then Slight Chance Rain Showers | 5 mph NE | 19% |
| Monday Night | 48°F | Chance Rain Showers | 5 mph NE | 30% |
| Tuesday | 64°F | Chance Rain Showers | 5 mph NE | 31% |
| Tuesday Night | 47°F | Chance Rain Showers then Mostly Cloudy | 0 to 10 mph NE | 30% |
| Wednesday | 63°F | Mostly Cloudy then Slight Chance Rain Showers | 5 to 10 mph NE | 18% |
| Wednesday Night | 47°F | Slight Chance Rain Showers | 5 to 10 mph NE | 21% |
| Thursday | 61°F | Chance Rain Showers | 5 to 10 mph NE | 25% |
| Thursday Night | 47°F | Chance Rain Showers | 5 to 10 mph NE | 31% |
| Friday | 65°F | Chance Rain Showers | 5 to 10 mph N | 32% |
| Friday Night | 48°F | Chance Rain Showers | 5 to 10 mph N | 32% |
| Saturday | 69°F | Chance Rain Showers | 5 to 10 mph N | 29% |
Forecast source: National Weather Service (api.weather.gov) for Allamuchy (40.931, -74.812). Updated through the day.
Growing snapshot for Allamuchy
Last spring frost
Apr 25
First fall frost
Oct 19
Growing season
175 days
Hardiness zone
6b
More local growing data for Allamuchy: nearby ZIP 07820 weather · frost dates · planting calendar · New Jersey frost dates
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Climate data from the nearest NOAA station, Andover Aeroflex Ap, Nj (6.4 mi from Allamuchy). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.