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Township of Union, NJUnion, NJ Weather Forecast
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| TODAY | TONIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT |
 |  |  |  | | | | | | | | |
| Chance of Showers | Showers | Sunny | Clear | Sunny | Clear | Sunny | Mostly Clear | Sunny | Mostly Clear | Sunny | Mostly Clear |
| Hi: 65°FHi: 18°C | Lo: 55°FLo: 13°C | Hi: 69°FHi: 21°C | Lo: 45°FLo: 7°C | Hi: 65°FHi: 18°C | Lo: 45°FLo: 7°C | Hi: 69°FHi: 21°C | Lo: 51°FLo: 11°C | Hi: 71°FHi: 22°C | Lo: 51°FLo: 11°C | Hi: 71°FHi: 22°C | Lo: 51°FLo: 11°C |
| POP: 50% | POP: 60% |
POP = Probability of Precipitation.
Weather Outlook Updated: 210 AM EDT Sun Oct 04 2026 
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Issued: 238 AM EDT Sun Oct 4 2026
Key Messages
1) No significant impacts expected from possible showers this afternoon and evening.
2) Dry thereafter with coolest conditions Tuesday into Wednesday.
Discussion
... .KEY MESSAGE 1... High pressure will shift into the Canadian Maritimes today. An amplified upper trough will dig down into the Great Lakes region, sending a cold front towards the area. The upper trough and its associated shortwave energy will interact with the coastal front/baroclinic zone just south of the area to develop...