Harman US

Mountain Lakes, NJ Weather & Growing Conditions

Overnight
53°F
Partly Cloudy
Partly cloudy, with a low around 53. Northeast wind 5 to 10 mph.

7-day forecast

WhenTempForecastWindPrecip
Overnight 53°F Partly Cloudy 5 to 10 mph NE 0%
Saturday 69°F Mostly Sunny 5 mph E 0%
Saturday Night 58°F Patchy Fog 5 mph SE 42%
Sunday 68°F Rain Showers 5 to 10 mph SE 92%
Sunday Night 57°F Patchy Fog 0 to 10 mph W 92%
Monday 64°F Chance Rain Showers 5 to 10 mph N 37%
Monday Night 51°F Chance Rain Showers 5 to 10 mph NE 27%
Tuesday 61°F Chance Rain Showers 10 mph NE 31%
Tuesday Night 49°F Chance Rain Showers 5 to 10 mph NE 30%
Wednesday 60°F Slight Chance Rain Showers 10 to 15 mph NE 24%
Wednesday Night 50°F Chance Rain Showers 10 mph NE 37%
Thursday 60°F Chance Rain Showers 10 mph NE 34%
Thursday Night 50°F Chance Showers And Thunderstorms 5 to 10 mph N 34%
Friday 66°F Chance Rain Showers 5 to 10 mph N 30%

Forecast source: National Weather Service (api.weather.gov). Updated through the day.

Growing snapshot for Mountain Lakes, NJ

Last spring frost
Apr 17
First fall frost
Oct 23
Growing season
189 days
Hardiness zone
6b

Explore more for Mountain Lakes, NJ: full frost dates · planting calendar · New Jersey frost dates

Climate data from the nearest NOAA station, Boonton 1 Se, Nj (2.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.