Lawrenceville, PA 14858 Frost Dates
Frost dates for Lawrenceville, PA, ZIP 14858
Around 05/09 is the usual last spring frost, about 254 days away. The first fall frost typically arrives around 10/12, about 155 frost-free days later.
Zone 6a (-10 to -5°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Lawrenceville, not a forecast for this year.
What to do before the first frost
Zone 6a around Lawrenceville has about 6 weeks left before the first fall frost — that's the usual window to get a cold frame up if you want to keep harvesting past it.
The actual range around Lawrenceville's last frost
05/09 is the middle of 30 years of NOAA records, not a promise. Plant by 04/25 and you're betting against frost in roughly 9 years out of 10. 05/25 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Lawrenceville compares
At roughly 155 frost-free days, Lawrenceville places 34,065 of 40,283 ZIP codes in this dataset. Within PA, it ranks 1,804 of 2,088.
Learn more
zone vs. frost date explains why Zone 6a and Lawrenceville's frost date answer different questions, and the frost range explains how to read the range around Lawrenceville's dates instead of trusting one.