Frost Dates for 02767 — Raynham, Massachusetts

Half of springs at Taunton, MA see their last 32°F night by April 22; only one in ten is past it by April 10, and one in ten still has one after May 6. Planting tender crops after April 28 leaves a 30% risk of a frost on them, after May 1 20%, and after May 6 10%. The 14 days between the even-odds date and the one-in-ten date is wider than at 51% of the 71 Massachusetts stations behind this site's ZIP pages.

In fall the first 32°F night comes by October 19 in half of years, as early as October 4 one year in ten, and holds off past November 4 one year in ten. A hard freeze of 28°F follows 13 days later, around November 1; in spring the one-in-ten date for 28°F is April 22, 14 days before the 32°F one. The freeze-free season lasts 179 days in a typical year, longer than at 70% of the 71 Massachusetts stations; it reaches 200 days one year in ten and falls short of 160 one year in ten. On average 128 nights a year drop to 32°F or below. Nights of 36°F, when frost can still settle on leaves in low, open spots, continue 12 days longer, to about May 4, and return around October 8. Severe cold of 16°F or below comes every winter, usually between December 9 and March 8.

July is the warmest month at Taunton, MA, averaging 84°F by day and 63°F at night; January is the coldest at 38°F and 20°F. A freezing night is all but certain in every month from November to April (a 90% chance or more). From June to September the chance of a 32°F night stays under 10% each month. In spring, May still brings one in 21% of years.

Warmth for growing adds up to 2,913 growing degree days a year (base 50°F), more than at 82% of the 71 Massachusetts stations. 30% of them (874) have built up by the end of June, and July adds the most, 719. Precipitation totals 48.9 inches a year, most in March (5.1") and least in February (3.4"); May to September bring 38% of it.

The nearest other station, Taunton Municipal Airport, MA, 4 miles south of Raynham, has a last frost 10 days later (May 2), a first frost 11 days earlier (October 8), a season 21 days shorter.

The first measurable snow (0.1 inch or more) in Raynham usually arrives around December 17, and the last of the season around March 15. Those are the middle dates across the winters of 1991–2020 at Taunton, MA, 2.5 miles away: half of years saw snow earlier, half later. Every one of those winters saw snow. The last 32°F night of spring typically comes 38 days after the last snow.

ZIP 02767 is 3 miles from Taunton, MA, which stands at 20 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 3 other ZIP codes share the station; its figures are presented in full for 02780 (Taunton). The 2023 USDA Plant Hardiness Zone Map lists ZIP 02767 in zone 6b, the band where the coldest night of the year averaged -5 to 0°F (-20.6 to -17.8°C) over 1991–2020; a zone describes winter lows, not frost dates.