Washington, NJ Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Washington, a borough in Warren County, New Jersey.
Today
83°F
Mostly Sunny
Mostly sunny, with a high near 83. Wind around 0 mph.
7-day forecast for Washington
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 83°F | Mostly Sunny | 0 mph | 0% |
| Tonight | 62°F | Mostly Cloudy | 0 mph | 1% |
| Wednesday | 82°F | Slight Chance Rain Showers then Chance Showers And Thunderstorms | 0 mph | 46% |
| Wednesday Night | 68°F | Showers And Thunderstorms Likely | 0 mph | 57% |
| Thursday | 87°F | Showers And Thunderstorms Likely | 0 to 5 mph SW | 73% |
| Thursday Night | 70°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 0 to 5 mph W | 73% |
| Friday | 87°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 to 5 mph SW | 53% |
| Friday Night | 68°F | Chance Showers And Thunderstorms | 0 mph | 53% |
| Saturday | 85°F | Partly Sunny then Chance Showers And Thunderstorms | 0 to 5 mph SW | 48% |
| Saturday Night | 67°F | Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms | 0 to 5 mph W | 48% |
| Sunday | 87°F | Mostly Sunny | 0 to 5 mph W | 12% |
| Sunday Night | 68°F | Mostly Clear | 0 mph | 12% |
| Monday | 87°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 to 5 mph W | 16% |
| Monday Night | 67°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph W | 16% |
Forecast source: National Weather Service (api.weather.gov) for Washington (40.759, -74.983). Updated through the day.
Growing snapshot for Washington
Last spring frost
Apr 30
First fall frost
Oct 18
Growing season
168 days
Hardiness zone
6b
More local growing data for Washington: nearby ZIP 07882 weather · frost dates · planting calendar · New Jersey frost dates
Nearby towns & communities
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Anderson
Belvidere
Blairstown
Brass Castle
Bridgeville
Broadway
Brookfield
Buttzville
Delaware
Delaware Park
Great Meadows
Greenwich
Hackettstown
Hainesburg
Harmony
Hope
Johnsonburg
Lopatcong Overlook
Marksboro
Mount Hermon
Mountain Lake
New Village
Oxford
Panther Valley
Phillipsburg
Port Colden
Port Murray
Silver Lake
Climate data from the nearest NOAA station, Belvidere Brg, Nj (6.4 mi from Washington). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.