Union, NJ Weather Forecast
Hunterdon County, New Jersey
Live radar, warnings and storm tracking for Union, with free alerts the moment it counts.
The next few hours
Dry for the moment, with rain moving in overnight
It is 47° with a dew point of 34°, which is dry for this time of year. The sky is mostly cloudy. The air is close to calm.
The wind backs into the northeast around 1 AM, which is the turn that usually comes ahead of the change rather than after it. The first rain arrives between 3 AM and 4 AM, with the best chance of it around 5 AM. That leaves a usable window outdoors until about 3 AM, and it closes quickly after that.
Taller, warmer bars mean heavier rain. Dotted means no reading for that hour.
Hour by hour
A long wet stretch ahead
Wet weather moves in around 3 AM. Total accumulation over the window comes to about 1.36 in.
The overnight low settles near 48°. Tomorrow reaches 54°, 6° warmer than today. It also gets muggier, so tomorrow will feel warmer than the number on its own suggests.
Sunrise and sunset
Next five days, scored 0 to 100The first day or two use the HRRR and NBM cloud layers. Later days only have total cloud, so treat them as a rough guide.
Know when sunset at this place will be worth a photo
We score every sunrise and sunset here from the cloud, haze and smoke forecast, and let you know when one is likely to light up. Sunrise the evening before, sunset a few hours ahead.
Seven-day outlook
31–59°F across the weekThe week runs between 31° and 54°, with tomorrow the warmest day of it. There is no real trend across it: one day looks much like the next. Friday is the wettest day, peaking near 100%. 4 of the 7 days stay dry.
Free alerts for Union
Every NWS warning, pushed to your phone, inbox or webhook the moment it is issued.
Union, NJ at a glance
Union is home to about 6,391 people in Hunterdon County, across 19 square miles. It ranks 320th by population of 450 places in New Jersey with a forecast here. The nearest neighbour with its own forecast is Clinton, 3 miles away.
- County
- Hunterdon County
- Population
- 6,391 2023 est.
- Land area
- 19 sq mi
- People per sq mi
- 341
- Forecast point
- 40.6322°N, 74.9650°W
How well can the network see Union?
The nearest Doppler radar is KDIX (Philadelphia, PA), to the SSE. Its lowest scan passes about 4,100 ft above Union. The beam is above the lowest few thousand feet here, so a warning for Union can come before anything looks dramatic on radar.
The closest weather station is KN40 (Pittstown). Close enough that its readings are the conditions in town.
Forecasts near Union
- Clinton, NJ3 mi
- Bethlehem, NJ3 mi
- Alexandria, NJ4 mi
- Franklin, NJ5 mi
- High Bridge, NJ5 mi
- Holland, NJ9 mi
- Greenwich, NJ9 mi
- Washington, NJ9 mi
Elsewhere in New Jersey
NewarkJersey CityPatersonLakewoodElizabethEdisonAll New Jersey forecasts →