Lawrenceville, NJ Weather & Growing Conditions
This Afternoon
75°F
Sunny
Sunny. High near 75, with temperatures falling to around 69 in the afternoon. South wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 75°F | Sunny | 5 mph S | 2% |
| Tonight | 57°F | Mostly Cloudy | 5 mph S | 1% |
| Thursday | 74°F | Chance Light Rain | 5 to 10 mph S | 40% |
| Thursday Night | 61°F | Light Rain | 0 to 5 mph SW | 83% |
| Friday | 71°F | Light Rain | 0 mph | 84% |
| Friday Night | 50°F | Light Rain | 0 to 5 mph NW | 84% |
| Saturday | 65°F | Mostly Sunny | 5 mph W | 8% |
| Saturday Night | 40°F | Slight Chance Light Rain | 5 mph W | 15% |
| Sunday | 60°F | Mostly Sunny | 5 to 10 mph W | 6% |
| Sunday Night | 38°F | Partly Cloudy | 5 mph W | 7% |
| Monday | 59°F | Sunny | 5 to 10 mph W | 7% |
| Monday Night | 35°F | Mostly Clear | 5 mph W | 7% |
| Tuesday | 63°F | Sunny | 5 to 10 mph W | 4% |
| Tuesday Night | 36°F | Mostly Clear | 5 mph W | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Lawrenceville, NJ
Last spring frost
Apr 17
First fall frost
Oct 28
Growing season
192 days
Hardiness zone
7a
Explore more for Lawrenceville, NJ: full frost dates · planting calendar · New Jersey frost dates
Climate data from the nearest NOAA station, Trenton State College, Nj (4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.