Princeton, NJ Weather & Growing Conditions
Overnight
57°F
Partly Cloudy
Partly cloudy, with a low around 57. Northeast wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 57°F | Partly Cloudy | 5 mph NE | 0% |
| Saturday | 74°F | Mostly Sunny | 5 mph E | 1% |
| Saturday Night | 57°F | Mostly Cloudy | 0 to 5 mph E | 5% |
| Sunday | 74°F | Rain Showers | 5 mph SE | 81% |
| Sunday Night | 56°F | Slight Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 0 to 5 mph NW | 69% |
| Monday | 68°F | Chance Rain Showers | 5 to 10 mph NE | 41% |
| Monday Night | 51°F | Chance Rain Showers | 5 to 10 mph NE | 29% |
| Tuesday | 63°F | Chance Rain Showers | 10 mph NE | 35% |
| Tuesday Night | 50°F | Chance Rain Showers | 10 mph NE | 34% |
| Wednesday | 64°F | Slight Chance Rain Showers | 10 to 15 mph NE | 24% |
| Wednesday Night | 50°F | Chance Rain Showers | 10 to 15 mph NE | 32% |
| Thursday | 62°F | Chance Rain Showers | 10 to 15 mph NE | 33% |
| Thursday Night | 49°F | Chance Rain Showers | 10 mph N | 33% |
| Friday | 65°F | Chance Rain Showers | 10 mph N | 32% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Princeton, NJ
Last spring frost
Apr 25
First fall frost
Oct 16
Growing season
173 days
Hardiness zone
7a
Explore more for Princeton, NJ: full frost dates · planting calendar · New Jersey frost dates
Climate data from the nearest NOAA station, Hightstown 2 W, Nj (7.9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.