Summit, NJ Weather & Growing Conditions
Today
71°F
Partly Sunny
Partly sunny. High near 71, with temperatures falling to around 69 in the afternoon. East wind 5 to 8 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 71°F | Partly Sunny | 5 to 8 mph E | 1% |
| Tonight | 58°F | Mostly Cloudy then Slight Chance Light Rain | 2 to 6 mph SE | 18% |
| Sunday | 70°F | Rain | 3 to 7 mph SE | 92% |
| Sunday Night | 56°F | Rain Likely | 2 to 8 mph W | 73% |
| Monday | 66°F | Chance Light Rain then Partly Sunny | 7 to 12 mph NE | 32% |
| Monday Night | 51°F | Mostly Cloudy then Chance Rain Showers | 7 to 10 mph NE | 25% |
| Tuesday | 62°F | Chance Rain Showers | 13 mph NE | 30% |
| Tuesday Night | 50°F | Chance Rain Showers then Mostly Cloudy | 13 mph NE | 25% |
| Wednesday | 62°F | Slight Chance Rain Showers | 16 mph NE | 23% |
| Wednesday Night | 50°F | Chance Rain Showers | 15 mph NE | 31% |
| Thursday | 61°F | Chance Rain Showers | 14 to 17 mph NE | 33% |
| Thursday Night | 49°F | Chance Rain Showers | 14 mph N | 36% |
| Friday | 64°F | Chance Rain Showers | 10 to 14 mph N | 33% |
| Friday Night | 50°F | Chance Rain Showers | 10 to 14 mph N | 31% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Summit, NJ
Last spring frost
Apr 18
First fall frost
Oct 27
Growing season
189 days
Hardiness zone
7a
Explore more for Summit, NJ: full frost dates · planting calendar · New Jersey frost dates
Climate data from the nearest NOAA station, Canoe Brook, Nj (2.1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.