Harlingen, NJ Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Harlingen, a community in Somerset County, New Jersey.
This Afternoon
74°F
Partly Sunny
Partly sunny, with a high near 74. Southeast wind around 5 mph.
7-day forecast for Harlingen
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 74°F | Partly Sunny | 5 mph SE | 1% |
| Tonight | 58°F | Mostly Cloudy | 0 to 5 mph SE | 7% |
| Sunday | 75°F | Rain Showers | 5 mph SE | 83% |
| Sunday Night | 57°F | Showers And Thunderstorms Likely | 0 to 5 mph NW | 70% |
| Monday | 70°F | Chance Rain Showers | 5 to 10 mph NE | 28% |
| Monday Night | 51°F | Chance Rain Showers | 5 mph NE | 29% |
| Tuesday | 66°F | Chance Rain Showers | 5 to 10 mph NE | 34% |
| Tuesday Night | 50°F | Chance Rain Showers then Mostly Cloudy | 5 to 10 mph NE | 34% |
| Wednesday | 65°F | Slight Chance Rain Showers | 10 to 15 mph NE | 20% |
| Wednesday Night | 50°F | Slight Chance Rain Showers | 10 mph NE | 21% |
| Thursday | 63°F | Chance Rain Showers | 10 to 15 mph NE | 28% |
| Thursday Night | 49°F | Chance Rain Showers | 10 mph NE | 35% |
| Friday | 66°F | Chance Rain Showers | 10 mph N | 35% |
| Friday Night | 50°F | Chance Rain Showers | 5 to 10 mph N | 35% |
Forecast source: National Weather Service (api.weather.gov) for Harlingen (40.452, -74.655). Updated through the day.
Growing snapshot for Harlingen
Last spring frost
Apr 16
First fall frost
Oct 27
Growing season
192 days
Hardiness zone
7a
More local growing data for Harlingen: nearby ZIP 08502 weather · frost dates · planting calendar · New Jersey frost dates
Nearby towns & communities
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Belle Mead
Bernardsville
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Bound Brook
Bradley Gardens
Bridgewater Center
Clyde
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East Millstone
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Far Hills
Finderne
Flagtown
Franklin Center
Franklin Park
Green Knoll
Griggstown
Hillsborough
Kingston
Lamington
Liberty Corner
Lyons
Manville
Martinsville
Middlebush
Millstone
Neshanic
Climate data from the nearest NOAA station, Wertsville 4 Ne, Nj (6.6 mi from Harlingen). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.