Somerville, NJ Weather Forecast
Somerset County, New Jersey
Seven-day outlook
37–70°F across the weekThe week runs between 38° and 70°, with Wednesday the warmest day of it. There is no real trend across it: one day looks much like the next. Every day in the outlook stays dry.
Forecasts come from the National Weather Service's own computer models, and current conditions from the nearest reporting weather station. Both are served through the weather API. A forecast is guidance, not a warning, and anything the Weather Service has actually issued is on the live map.
The written summaries on this page are generated from the forecast data above, not by a meteorologist. Each sentence is a reading of the same numbers you can see, and no forecaster has reviewed them.
About the Somerville forecast
Somerville sits at 40.5697°N, 74.6077°W in Somerset County, New Jersey. The forecast above is drawn for that point from the National Weather Service's own computer models: a seven-day outlook, and a finer-grained one covering the next eighteen hours where it reaches, and the radar and alert panels show what the Weather Service has out over the area right now.
- County
- Somerset County
- Coordinates
- 40.5697°N, 74.6077°W
- Population
- 14,112 · 2023 estimate
- Land area
- 2.338 sq mi
Place data from the US Census Bureau. Coordinates are the Census internal point for Somerville, and the forecast is for that location, not for every address inside the city limits, and a large city can have real weather differences from one side to the other.
How well can the network see Somerville?
The nearest Doppler radar is KDIX (Philadelphia, PA), 44 miles to the SSE. A WSR-88D's lowest routine scan sits half a degree above horizontal, and the earth curves away beneath it, so by the time that beam reaches Somerville its center is about 3,000 ft above ground. That is comfortably inside the useful range. The lowest scan passes low enough over Somerville to show rotation in the part of a storm where tornadoes actually form. Somerville is closer to its radar than 50% of US cities.
The closest instrument actually measuring the air is KSMQ · Somerville/Somerset Arpt on the ASOS/AWOS network, 4.9 miles away. Close enough that its readings are, for practical purposes, the conditions in town.
Beam height is the standard 4/3-earth approximation for the 0.5° scan and assumes normal refraction; it is where the center of the beam is, not its edges, and unusual temperature profiles bend it. Radar siting from the NWS WSR-88D network, station positions from the New Jersey observing network as of this build.
Forecasts near Somerville
- Bridgewater, NJ2 mi
- Raritan, NJ2 mi
- Manville, NJ2 mi
- Bound Brook, NJ4 mi
- South Bound Brook, NJ4 mi
- Branchburg, NJ6 mi
- Middlesex, NJ6 mi
- Hillsborough, NJ6 mi
Elsewhere in New Jersey
NewarkJersey CityPatersonLakewoodElizabethEdisonAll New Jersey forecasts →