Newtown, CT 06913 Frost Dates
When can you plant in Newtown, CT?
Around 04/20 is the usual last spring frost, about 235 days away. The first fall frost typically arrives around 10/20, about 181 frost-free days later.
The USDA Plant Hardiness Zone Map puts Newtown in Zone 7a (0 to 5°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
What to do before the first frost
About 8 weeks of growing season left in Newtown before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Newtown's last frost
04/20 is the middle of 30 years of NOAA records, not a promise. Plant by 04/07 and you're betting against frost in roughly 9 years out of 10. 05/06 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Newtown compares
At roughly 181 frost-free days, Newtown places 24,595 of 40,283 ZIP codes in this dataset. Within CT, it ranks 270 of 391.
Learn more
zone vs. frost date covers why Zone 7a and Newtown's frost date answer different questions. the frost range covers how to read the range around Newtown's dates instead of trusting one.