Mountainside, NJ Weather Forecast
Union County, New Jersey
Live radar, warnings and storm tracking for Mountainside, with free alerts the moment it counts.
The next few hours
Taller, warmer bars mean heavier rain. Dotted means no reading for that hour.
Hour by hour
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
Free alerts for Mountainside
Every NWS warning, pushed to your phone, inbox or webhook the moment it is issued.
Mountainside, NJ at a glance
Mountainside is home to about 6,924 people in Union County, across 4 square miles. It ranks 311th by population of 450 places in New Jersey with a forecast here. The nearest neighbour with its own forecast is Springfield, 2 miles away.
- County
- Union County
- Population
- 6,924 2023 est.
- Land area
- 4 sq mi
- People per sq mi
- 1,733
- Forecast point
- 40.6807°N, 74.3603°W
How well can the network see Mountainside?
The nearest Doppler radar is KDIX (Philadelphia, PA), to the S. Its lowest scan passes about 3,600 ft above Mountainside. Close enough to see rotation in the low part of a storm, where tornadoes form.
The closest weather station is KLDJ (Linden Arpt). Representative on most days, though a thunderstorm can hit one and miss the other.
Forecasts near Mountainside
- Springfield, NJ2 mi
- Westfield, NJ2 mi
- Summit, NJ2 mi
- New Providence, NJ3 mi
- Garwood, NJ3 mi
- Fanwood, NJ3 mi
- Berkeley Heights, NJ3 mi
- Scotch Plains, NJ3 mi
Elsewhere in New Jersey
NewarkJersey CityPatersonLakewoodElizabethEdisonAll New Jersey forecasts →