Weather World
Green Valley Lake, NJ Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
Green Valley Lake Weather Forecast
| TODAY | TONIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT |
 |  |  | |  | | | |  |  | | |
| Chance of Showers | Chance of Showers | Partly Sunny | Chance of Showers | Showers | Showers Likely | Showers Likely | Showers Likely | Sunny | Mostly Clear | Sunny | Mostly Clear |
| Hi: 79°FHi: 26°C | Lo: 59°FLo: 15°C | Hi: 79°FHi: 26°C | Lo: 61°FLo: 16°C | Hi: 75°FHi: 24°C | Lo: 65°FLo: 18°C | Hi: 79°FHi: 26°C | Lo: 59°FLo: 15°C | Hi: 79°FHi: 26°C | Lo: 55°FLo: 13°C | Hi: 79°FHi: 26°C | Lo: 59°FLo: 15°C |
| POP: 90% | POP: 80% | POP: 50% | POP: 70% | POP: 60% | POP: 60% | POP: 60% |
POP = Probability of Precipitation.
Weather Outlook Updated: 229 AM EDT Thu Aug 20 2026 
Green Valley Lake Radar Loop
Use the map search tool if you want to place a location marker on the radar map...
Green Valley Lake Weather Map
Green Valley Lake Quick Facts
Green Valley Lake Forecast Discussion
Issued: 402 AM EDT Thu Aug 20 2026
Key Messages
1) Showers and potential thunderstorms move through the area this afternoon through the evening. A period of heavy rainfall is possible, particularly for northeast NJ, NYC, southern Westchester and Western Long Island, where a Flood Watch is now in effect. For the Watch area, peak hourly rainfall rates could reach around 2 inches with total rainfall amounts expected to be between 1.5 and 2.5 inches with locally higher amounts possible.
2) Unsettled weathe...