Upper Greenwood Lake, NJ Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Upper Greenwood Lake, a community in Passaic County, New Jersey.
Today
81°F
Sunny
Sunny, with a high near 81. Northeast wind around 3 mph.
7-day forecast for Upper Greenwood Lake
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 81°F | Sunny | 3 mph NE | 0% |
| Tonight | 63°F | Mostly Cloudy | 2 mph S | 2% |
| Wednesday | 79°F | Partly Sunny then Chance Showers And Thunderstorms | 3 mph S | 32% |
| Wednesday Night | 68°F | Chance Showers And Thunderstorms | 2 mph S | 45% |
| Thursday | 84°F | Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms | 2 to 6 mph SW | 63% |
| Thursday Night | 70°F | Showers And Thunderstorms Likely then Partly Cloudy | 5 mph SW | 59% |
| Friday | 84°F | Mostly Sunny then Chance Showers And Thunderstorms | 6 mph SW | 49% |
| Friday Night | 69°F | Chance Showers And Thunderstorms | 3 mph SW | 46% |
| Saturday | 82°F | Partly Sunny then Chance Showers And Thunderstorms | 6 mph SW | 44% |
| Saturday Night | 68°F | Chance Showers And Thunderstorms | 5 mph W | 44% |
| Sunday | 83°F | Mostly Sunny | 5 mph W | 12% |
| Sunday Night | 69°F | Mostly Clear | 5 mph SW | 12% |
| Monday | 85°F | Sunny then Slight Chance Showers And Thunderstorms | 7 mph W | 16% |
| Monday Night | 67°F | Slight Chance Showers And Thunderstorms | 6 mph W | 16% |
Forecast source: National Weather Service (api.weather.gov) for Upper Greenwood Lake (41.186, -74.378). Updated through the day.
Growing snapshot for Upper Greenwood Lake
Last spring frost
Apr 19
First fall frost
Oct 23
Growing season
188 days
Hardiness zone
6b
More local growing data for Upper Greenwood Lake: nearby ZIP 07421 weather · frost dates · planting calendar · New Jersey frost dates
Nearby towns & communities
Bloomingdale
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Clifton
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Montclair State University
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Pompton Lakes
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Singac
Totowa
Wanaque
William Paterson University of New Jersey
Woodland Park
Climate data from the nearest NOAA station, Wanaque Raymond Dam, Nj (9.5 mi from Upper Greenwood Lake). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.