Harman US

Lawrenceville, PA Weather & Growing Conditions

This Afternoon
69°F
Partly Sunny
Partly sunny, with a high near 69. South wind around 9 mph.

7-day forecast

WhenTempForecastWindPrecip
This Afternoon 69°F Partly Sunny 9 mph S 1%
Tonight 58°F Mostly Cloudy then Rain Showers 9 mph S 81%
Thursday 69°F Rain Showers Likely then Partly Sunny 7 to 12 mph SW 64%
Thursday Night 47°F Mostly Clear then Patchy Fog 1 to 5 mph SW 0%
Friday 62°F Patchy Fog then Partly Sunny 1 to 6 mph SW 7%
Friday Night 43°F Rain Showers Likely 3 mph W 56%
Saturday 51°F Rain Showers Likely 3 to 9 mph W 56%
Saturday Night 37°F Chance Rain Showers 9 mph NW 48%
Sunday 54°F Partly Sunny 10 mph W 9%
Sunday Night 36°F Partly Cloudy then Slight Chance Rain Showers 9 mph W 15%
Monday 53°F Slight Chance Rain Showers 8 to 13 mph W 15%
Monday Night 35°F Partly Cloudy 7 mph W 1%
Tuesday 58°F Mostly Sunny then Slight Chance Rain Showers 7 to 12 mph W 15%
Tuesday Night 34°F Slight Chance Rain Showers 2 to 7 mph W 15%

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

Growing snapshot for Lawrenceville, PA

Last spring frost
May 9
First fall frost
Oct 12
Growing season
155 days
Hardiness zone
6a

Explore more for Lawrenceville, PA: full frost dates · planting calendar · Pennsylvania frost dates

Climate data from the nearest NOAA station, Cowanesque Dam, Pa (2.2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.