Union County, NJ Weather Forecast
County weather hub
Sunny
Compare major city weather across Union County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Sunny, with a high near 63. Northwest wind around 12 mph.
County Weather Overview
This county weather page brings together forecast coverage for Union County so visitors can compare temperatures, wind, and conditions across the region without hopping between unrelated pages.
Current forecast coverage spans 10 of 10 mapped cities in Union County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- Apr 11 to Apr 15, 2026
- Latest sync
- Apr 9, 2026 3:52 PM EDT
- Forecast office
- OKX
- Source
- NOAA / NWS
Daily Outlook
This Week in Union County
Tuesday looks like the warmest upcoming period in Union County at 86 degrees F.
Saturday Night is the coolest period ahead with temperatures near 42 degrees F.
The strongest winds are forecast for Saturday at about 12 mph NW.
Precipitation is mentioned in 3 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 9, 2026 3:52 PM EDT
- Coverage
- 5 days
- Time zone
- America/New_York
- Forecast office
- OKX
- Radar station
- KDIX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Mostly clear, with a low around 42.
Mostly sunny, with a high near 63.
Mostly cloudy, with a low around 49.
Mostly cloudy, with a high near 77.
Mostly cloudy, with a low around 62.
Mostly sunny, with a high near 86.
A slight chance of rain showers between 8pm and 2am. Mostly cloudy, with a low around 66.
A slight chance of rain showers after 2pm. Mostly sunny, with a high near 86.
A slight chance of rain showers before 2am. Mostly cloudy, with a low around 61.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Saturday
Apr 11
|
Sunny
|
63°F |
12 mph
NW
|
|
Saturday Night
Apr 11
|
Mostly Clear
|
42°F |
2 to 8 mph
N
|
|
Sunday
Apr 12
|
Mostly Sunny
|
63°F |
1 to 9 mph
E
|
|
Sunday Night
Apr 12
|
Mostly Cloudy
|
49°F |
5 to 8 mph
S
|
|
Monday
Apr 13
|
Mostly Cloudy
|
77°F |
6 to 12 mph
SW
|
|
Monday Night
Apr 13
|
Mostly Cloudy
|
62°F |
6 to 10 mph
SW
|
|
Tuesday
Apr 14
|
Mostly Sunny
|
86°F |
6 to 10 mph
SW
|
|
Tuesday Night
Apr 14
|
Slight Chance Rain Showers
|
66°F |
6 to 9 mph
SW
|
|
Wednesday
Apr 15
|
Mostly Sunny then Slight Chance Rain Showers
|
86°F |
6 to 10 mph
SW
|
|
Wednesday Night
Apr 15
|
Slight Chance Rain Showers
|
61°F |
6 to 9 mph
S
|
Major City Forecasts
Live forecast snapshots for major cities across Union County.
Coverage
Forecast coverage currently spans 10 of 10 mapped cities in Union County.
Largest mapped city population in this region: 128,382.
