Woonsocket, RI 01569 Frost Dates
Frost dates for Woonsocket, RI, ZIP 01569
Around 04/30 is the usual last spring frost, about 245 days away. The first fall frost typically arrives around 10/09, about 162 frost-free days later.
Zone 6b (-5 to 0°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 Woonsocket, not a forecast for this year.
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.
How much risk comes with planting early here
04/30 is the middle of 30 years of NOAA records, not a promise. Plant by 04/17 and you're betting against frost in roughly 9 years out of 10. 05/14 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Woonsocket compares
About 162 days separate Woonsocket's last and first frost, putting it 31,611 of 40,283 ZIP codes nationally. Within RI, it ranks 66 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.