Middletown, CT 06422 Frost Dates
When can you plant in Middletown, CT?
Around 04/26 is the usual last spring frost, about 241 days away. The first fall frost typically arrives around 10/16, about 175 frost-free days later.
Middletown 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
About 7 weeks of growing season left in Middletown before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
Why 04/26 isn't a guarantee
04/26 is the middle of 30 years of NOAA records, not a promise. Plant by 04/11 and you're betting against frost in roughly 9 years out of 10. 05/09 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Middletown compares
Middletown's growing season runs about 175 days, ranking 26,733 of 40,283 US ZIP codes measured here, longest to shortest. Within CT, it ranks 303 of 391.
Learn more
the frost range covers how to read the range around Middletown's dates instead of trusting one. local microclimates covers what one yard in Middletown can differ from the 06422 normal.