Johnsonburg, NJ Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Johnsonburg, a community in Warren County, New Jersey.
Tonight
55°F
Mostly Cloudy then Chance Rain Showers
A chance of rain showers after 1am. Mostly cloudy, with a low around 55. Southeast wind around 0 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Johnsonburg
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 55°F | Mostly Cloudy then Chance Rain Showers | 0 mph | 41% |
| Sunday | 70°F | Rain Showers | 0 to 5 mph SE | 96% |
| Sunday Night | 53°F | Showers And Thunderstorms then Mostly Cloudy | 0 to 5 mph NW | 76% |
| Monday | 69°F | Partly Sunny then Slight Chance Rain Showers | 5 mph NE | 18% |
| Monday Night | 47°F | Chance Rain Showers | 0 to 5 mph NE | 30% |
| Tuesday | 63°F | Chance Rain Showers | 5 mph NE | 30% |
| Tuesday Night | 46°F | Chance Rain Showers then Mostly Cloudy | 0 to 10 mph NE | 30% |
| Wednesday | 63°F | Mostly Cloudy then Slight Chance Rain Showers | 5 to 10 mph NE | 18% |
| Wednesday Night | 46°F | Slight Chance Rain Showers | 5 to 10 mph NE | 21% |
| Thursday | 61°F | Slight Chance Rain Showers | 5 to 10 mph NE | 24% |
| Thursday Night | 46°F | Chance Rain Showers | 5 to 10 mph NE | 30% |
| Friday | 65°F | Chance Rain Showers | 5 to 10 mph N | 32% |
| Friday Night | 47°F | Chance Rain Showers | 5 to 10 mph N | 32% |
| Saturday | 68°F | Chance Rain Showers | 5 to 10 mph N | 28% |
Forecast source: National Weather Service (api.weather.gov) for Johnsonburg (40.963, -74.871). Updated through the day.
Growing snapshot for Johnsonburg
Last spring frost
Apr 25
First fall frost
Oct 19
Growing season
175 days
Hardiness zone
6b
More local growing data for Johnsonburg: nearby ZIP 07846 weather · frost dates · planting calendar · New Jersey frost dates
Nearby towns & communities
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Marksboro
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Climate data from the nearest NOAA station, Andover Aeroflex Ap, Nj (7.9 mi from Johnsonburg). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.