Lake Hiawatha, NJ Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Lake Hiawatha, a community in Morris County, New Jersey.
This Afternoon
72°F
Mostly Sunny
Mostly sunny, with a high near 72. East wind 0 to 5 mph.
7-day forecast for Lake Hiawatha
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 72°F | Mostly Sunny | 0 to 5 mph E | 1% |
| Tonight | 56°F | Mostly Cloudy | 0 to 5 mph E | 9% |
| Sunday | 68°F | Rain Showers | 0 to 5 mph SE | 96% |
| Sunday Night | 55°F | Showers And Thunderstorms Likely | 0 to 10 mph W | 69% |
| Monday | 66°F | Chance Rain Showers then Partly Sunny | 5 to 10 mph N | 26% |
| Monday Night | 50°F | Mostly Cloudy then Slight Chance Rain Showers | 5 mph NE | 24% |
| Tuesday | 62°F | Chance Rain Showers | 5 to 10 mph NE | 29% |
| Tuesday Night | 48°F | Chance Rain Showers then Mostly Cloudy | 5 to 10 mph NE | 26% |
| Wednesday | 63°F | Mostly Cloudy then Slight Chance Rain Showers | 10 to 15 mph NE | 20% |
| Wednesday Night | 48°F | Chance Rain Showers | 10 mph NE | 30% |
| Thursday | 62°F | Chance Rain Showers | 10 to 15 mph NE | 33% |
| Thursday Night | 48°F | Chance Rain Showers | 10 mph N | 37% |
| Friday | 64°F | Chance Rain Showers | 10 mph N | 32% |
| Friday Night | 50°F | Chance Rain Showers | 5 to 10 mph N | 31% |
Forecast source: National Weather Service (api.weather.gov) for Lake Hiawatha (40.881, -74.383). Updated through the day.
Growing snapshot for Lake Hiawatha
Last spring frost
Apr 17
First fall frost
Oct 23
Growing season
189 days
Hardiness zone
7a
More local growing data for Lake Hiawatha: nearby ZIP 07034 weather · frost dates · planting calendar · New Jersey frost dates
Nearby towns & communities
Beattystown
Boonton
Brookside
Budd Lake
Cedar Knolls
Chester
Dover
Flanders
Florham Park
Gillette
Green Village
Hibernia
Kenvil
Kinnelon
Lake Hopatcong
Lake Telemark
Landing
Ledgewood
Lincoln Park
Long Valley
Lower Berkshire Valley
Macopin
Madison
Mendham
Millington
Morris Plains
Morristown
Mount Arlington
Mount Hope
Mount Tabor
Climate data from the nearest NOAA station, Boonton 1 Se, Nj (1.2 mi from Lake Hiawatha). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.