Alpha, NJ Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Alpha, a borough in Warren County, New Jersey.
This Afternoon
73°F
Partly Sunny
Partly sunny, with a high near 73. Southeast wind around 0 mph.
7-day forecast for Alpha
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 73°F | Partly Sunny | 0 mph | 1% |
| Tonight | 58°F | Mostly Cloudy then Chance Rain Showers | 0 to 5 mph SE | 53% |
| Sunday | 73°F | Rain Showers | 5 mph SE | 96% |
| Sunday Night | 56°F | Showers And Thunderstorms then Mostly Cloudy | 0 to 5 mph NW | 86% |
| Monday | 70°F | Partly Sunny then Slight Chance Rain Showers | 5 to 10 mph NE | 23% |
| Monday Night | 50°F | Chance Rain Showers | 5 mph NE | 31% |
| Tuesday | 64°F | Chance Rain Showers | 5 to 10 mph NE | 38% |
| Tuesday Night | 49°F | Chance Rain Showers then Mostly Cloudy | 5 to 10 mph NE | 35% |
| Wednesday | 63°F | Slight Chance Rain Showers | 10 to 15 mph NE | 20% |
| Wednesday Night | 48°F | Slight Chance Rain Showers | 10 mph NE | 21% |
| Thursday | 62°F | Slight Chance Rain Showers | 10 mph NE | 24% |
| Thursday Night | 48°F | Chance Rain Showers | 10 mph NE | 30% |
| Friday | 66°F | Chance Rain Showers | 10 mph N | 33% |
| Friday Night | 50°F | Chance Rain Showers | 5 to 10 mph N | 33% |
Forecast source: National Weather Service (api.weather.gov) for Alpha (40.659, -75.157). Updated through the day.
Growing snapshot for Alpha
Last spring frost
Apr 18
First fall frost
Oct 25
Growing season
188 days
Hardiness zone
7a
More local growing data for Alpha: nearby ZIP 08865 weather · frost dates · planting calendar · New Jersey frost dates
Nearby towns & communities
Allamuchy
Anderson
Belvidere
Blairstown
Brass Castle
Bridgeville
Broadway
Brookfield
Buttzville
Delaware
Delaware Park
Great Meadows
Greenwich
Hackettstown
Hainesburg
Harmony
Hope
Johnsonburg
Lopatcong Overlook
Marksboro
Mount Hermon
Mountain Lake
New Village
Oxford
Panther Valley
Phillipsburg
Port Colden
Port Murray
Silver Lake
Stewartsville
Climate data from the nearest NOAA station, Phillipsburg-Easton Brg, Nj (2.9 mi from Alpha). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.