Martinsville, NJ Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Martinsville, a community in Somerset County, New Jersey.
Tonight
59°F
Mostly Cloudy
Mostly cloudy, with a low around 59. Southeast wind around 5 mph.
7-day forecast for Martinsville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 59°F | Mostly Cloudy | 5 mph SE | 10% |
| Sunday | 72°F | Rain Showers | 5 mph SE | 85% |
| Sunday Night | 57°F | Showers And Thunderstorms | 5 to 10 mph W | 79% |
| Monday | 68°F | Chance Rain Showers | 5 to 10 mph NE | 25% |
| Monday Night | 52°F | Chance Rain Showers | 5 to 10 mph NE | 30% |
| Tuesday | 63°F | Chance Rain Showers | 10 mph NE | 32% |
| Tuesday Night | 50°F | Chance Rain Showers then Mostly Cloudy | 5 to 10 mph NE | 32% |
| Wednesday | 63°F | Slight Chance Rain Showers | 10 to 15 mph NE | 19% |
| Wednesday Night | 50°F | Slight Chance Rain Showers | 10 to 15 mph NE | 21% |
| Thursday | 61°F | Chance Rain Showers | 10 to 15 mph NE | 27% |
| Thursday Night | 50°F | Chance Rain Showers | 10 to 15 mph NE | 34% |
| Friday | 64°F | Chance Rain Showers | 10 to 15 mph N | 35% |
| Friday Night | 51°F | Chance Rain Showers | 10 mph N | 35% |
| Saturday | 67°F | Chance Rain Showers | 10 mph N | 30% |
Forecast source: National Weather Service (api.weather.gov) for Martinsville (40.603, -74.576). Updated through the day.
Growing snapshot for Martinsville
Last spring frost
Apr 30
First fall frost
Oct 20
Growing season
172 days
Hardiness zone
7a
More local growing data for Martinsville: nearby ZIP 08836 weather · frost dates · planting calendar · New Jersey frost dates
Nearby towns & communities
Basking Ridge
Bedminster
Belle Mead
Bernardsville
Blackwells Mills
Blawenburg
Bound Brook
Bradley Gardens
Bridgewater Center
Clyde
Dunellen
East Millstone
East Rocky Hill
Far Hills
Finderne
Flagtown
Franklin Center
Franklin Park
Green Knoll
Griggstown
Harlingen
Hillsborough
Kingston
Lamington
Liberty Corner
Lyons
Manville
Middlebush
Millstone
Neshanic
Climate data from the nearest NOAA station, Somerville 4 Nw, Nj (5.2 mi from Martinsville). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.