Somerville, NJ Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Somerville, a borough in Somerset County, New Jersey.
This Afternoon
74°F
Mostly Sunny
Mostly sunny, with a high near 74. East wind around 5 mph.
7-day forecast for Somerville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 74°F | Mostly Sunny | 5 mph E | 1% |
| Tonight | 57°F | Mostly Cloudy | 0 to 5 mph E | 8% |
| Sunday | 72°F | Rain Showers | 0 to 5 mph SE | 91% |
| Sunday Night | 55°F | Showers And Thunderstorms Likely | 0 to 5 mph W | 68% |
| Monday | 69°F | Chance Rain Showers then Partly Sunny | 5 to 10 mph N | 33% |
| Monday Night | 50°F | Mostly Cloudy then Chance Rain Showers | 5 mph NE | 26% |
| Tuesday | 63°F | Chance Rain Showers | 5 to 10 mph NE | 31% |
| Tuesday Night | 49°F | Chance Rain Showers | 5 to 10 mph NE | 28% |
| Wednesday | 64°F | Slight Chance Rain Showers | 10 to 15 mph NE | 24% |
| Wednesday Night | 49°F | Chance Rain Showers | 10 mph NE | 32% |
| Thursday | 63°F | Chance Rain Showers | 10 to 15 mph NE | 33% |
| Thursday Night | 49°F | Chance Rain Showers | 5 to 10 mph N | 34% |
| Friday | 66°F | Chance Rain Showers | 10 mph N | 31% |
| Friday Night | 49°F | Chance Rain Showers | 5 to 10 mph N | 29% |
Forecast source: National Weather Service (api.weather.gov) for Somerville (40.570, -74.608). Updated through the day.
Growing snapshot for Somerville
Last spring frost
Apr 30
First fall frost
Oct 20
Growing season
172 days
Hardiness zone
7a
More local growing data for Somerville: nearby ZIP 08807 weather · frost dates · planting calendar · New Jersey frost dates
Nearby towns & communities
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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
Harlingen
Hillsborough
Kingston
Lamington
Liberty Corner
Lyons
Manville
Martinsville
Middlebush
Millstone
Climate data from the nearest NOAA station, Somerville 4 Nw, Nj (2.4 mi from Somerville). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.