Photo: John Phelan · CC BY-SA 3.0New Seabury has cooler summers than 92% of U.S. towns
Nights in January average 25°. A year here swings 55° from midwinter lows to midsummer highs. Precipitation is plentiful here, more than falls on 75% of U.S. towns. Garden planting can start around April 26; autumn frost returns near October 26.
A year in New Seabury at a glance
Each month’s typical high and low, and what it brings.
What stands out about New Seabury’s climate
Compared with towns across the U.S., with New Seabury’s place in Massachusetts beside it.
What a year in New Seabury feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 180 frost-free days a year
In half of years the last 32° night comes by April 26 and the first by October 26. Frost and day counts come from NOAA’s station at E Sandwich, MA, 10 miles from the town’s center, 130 ft higher.
The 2023 USDA map puts New Seabury’s center in zone 7a: the coldest night of a typical winter, averaged over 1991–2020, reaches about 4°. Plant labels use the zone; frost dates tell you when to plant.
Freezing nights by month
Average nights at or below 32°
About 25 inches of snow a winter
Snow, measured at Edgartown, MA, is heaviest from January through February, about 8 inches a month. Precipitation (rain plus melted snow) adds up to 48 inches a year; March is the wettest month and July the driest. Rain or snow falls on about 128 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in New Seabury
94% of the work is heating, so the furnace matters far more than the air conditioner. Months averaging under 55° run from October through April.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at E Sandwich, MA.
Living with New Seabury’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
180 frost-free days in zone 7a. The last frost comes by Apr 26 in half of years, so many gardeners wait a week or two past that to set out tomatoes. The first fall frost comes by Oct 26.
Months with highs of 62–84° and lows of 40° or more: May, June, July, August, September and October. 13 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in New Seabury from natural hazards, river flooding is the largest share (49%); heat waves, cold waves, winter storms and ice storms together are 1%. Normals are averages; the hazards page covers the extremes.
Natural hazards →New Seabury and its neighbors
Every town next door is within a degree of New Seabury in January and July, closer than the 5 km grid can tell apart. Tap a town to see its climate.
Climates most like New Seabury’s, farther away
TownRatings’ own comparison of NOAA 1991–2020 normals, not a NOAA product: places of 5,000+ at least 150 miles away, one per state, closest on January low, July high, precipitation and snow.
| Town | Jan. low | July high | Precip. | Snow |
|---|---|---|---|---|
| New Seabury, MA | 25° | 80° | 48" | 25" |
| Galax, VA | 25° | 82° | 48" | 17" |
| Islip, NY | 26° | 83° | 45" | 32" |
| Princeton, WV | 23° | 82° | 41" | 24" |
| Shamokin, PA | 19° | 82° | 46" | 34" |
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value. Snow and frost-free days come from the nearest weather station, so neighbors often share them.
Warmer than it used to be
The last 30 years in New Seabury averaged 2.0° warmer than the 1900s. The biggest change is in December (+3.4°).
A bigger shift than in 89% of U.S. towns.
Change by month
The two periods overlap (1991–2000 is in both), which makes the gap a little smaller than it would be between separate periods.
How New Seabury compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with New Seabury’s place among Massachusetts’.
New Seabury weather by month
Highs, lows and precipitation from NOAA’s grid at New Seabury’s center; snow, wet days and snow on the ground from Edgartown, MA. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 39° | 25° | 3.9" | 8.8" | 12 | 6 | 23° – 38° |
| February | 40° | 26° | 3.5" | 8.1" | 10 | 7 | 23° – 38° |
| March | 46° | 31° | 4.9" | 4.7" | 11 | 3 | 33° – 44° |
| April | 55° | 39° | 4.2" | 0.3" | 12 | 0 | 42° – 51° |
| May | 64° | 48° | 3.5" | 0.0" | 12 | 0 | 51° – 60° |
| June | 73° | 57° | 3.5" | 0.0" | 10 | 0 | 62° – 68° |
| July | 80° | 64° | 2.8" | 0.0" | 8 | 0 | 68° – 76° |
| August | 79° | 63° | 3.5" | 0.0" | 9 | 0 | 68° – 75° |
| September | 73° | 57° | 4.1" | 0.0" | 9 | 0 | 62° – 68° |
| October | 63° | 47° | 4.8" | 0.0" | 11 | 0 | 51° – 60° |
| November | 53° | 38° | 4.3" | 0.0" | 11 | 0 | 41° – 50° |
| December | 45° | 30° | 4.8" | 3.4" | 12 | 3 | 31° – 47° |
| Year | 59° | 44° | 47.8" | 25.3" | 128 | 20 |
How much a month can swing
A normal is an average. December swings the most: from 1991 to 2020 its average ranged from 31° to 47°. September is the most reliable, staying within 6°.
Where New Seabury’s numbers come from
Normals are 30-year averages, not a forecast. How TownRatings reads climate data →
- Temperatures and precipitation: NOAA’s gridded 1991–2020 normals for the 5 km cell at New Seabury’s center.
- Snow: Edgartown, MA.
- Frost, freezing nights, 90° and 100° days, heating and cooling: E Sandwich, MA, 10 miles from the town’s center, 130 ft higher; the nearest station that passes our checks for distance, height and agreement with the grid.
- Growing zone: USDA Plant Hardiness Zone Map, 2023. USDA Agricultural Research Service and PRISM Group, Oregon State University, prism.oregonstate.edu/phzm, accessed 8 Oct 2026.
- Then and now: NOAA’s gridded normals for 1901–2000 at the same cell.
- Storms and extremes: FEMA National Risk Index (expected annual losses to buildings).
Common questions about New Seabury’s climate
What is the weather like in New Seabury?
A typical July afternoon reaches 80°, a January night drops to 25°, and about 25 inches of snow falls in a normal winter. Milder January nights than 61% of U.S. towns; cooler July afternoons than 92% of U.S. towns.
How cold does it get in New Seabury in winter?
January nights average 25°. About 122 nights a year reach 32° or below and 3 reach 0° or below. In the coldest January of the last 30 years the month averaged 23°.
How much snow does New Seabury get?
About 25 inches in a normal winter at Edgartown, MA, heaviest from January through February, about 8 inches a month, with snow on the ground about 20 days a year.
How hot does it get in New Seabury?
July, with a typical high of 80°. 90° days are rare: none in a normal year at E Sandwich, MA.
When is the first and last frost in New Seabury?
In half of years the last spring frost (32°) comes by April 26 and the first fall frost by October 26, about 180 frost-free days, at E Sandwich, MA.
What growing zone is New Seabury in?
Zone 7a on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about 4°.
What is the best time of year to visit New Seabury?
By one simple rule (highs of 62–84° and lows of 40° or more), May, June, July, August, September and October. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is New Seabury getting warmer?
Yes: 1991–2020 averaged 2.0° warmer than 1901–2000 on NOAA’s grid. A bigger shift than 89% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in New Seabury.
Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000; USDA/PRISM 2023 hardiness zones; FEMA National Risk Index. Today’s forecast: National Weather Service.