Woonsocket, RI 02858 Frost Dates
Frost dates for Woonsocket, RI, ZIP 02858
Typically, the last spring freeze lands around 05/01, roughly 246 days out. The first fall frost typically arrives around 10/09, about 161 frost-free days later.
Woonsocket sits in USDA Zone 6b (-5 to 0°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
What to do before the first frost
Zone 6b around Woonsocket 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 Woonsocket's last frost
05/01 is the middle of 30 years of NOAA records, not a promise. Plant by 04/20 and you're betting against frost in roughly 9 years out of 10. 05/17 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Woonsocket compares
Woonsocket's growing season runs about 161 days, ranking 31,945 of 40,283 US ZIP codes measured here, longest to shortest. Within RI, it ranks 78 of 79.
Learn more
zone vs. frost date explains why Zone 6b and Woonsocket's frost date answer different questions, and the frost range explains how to read the range around Woonsocket's dates instead of trusting one.