Photo: Tom Walsh · CC BY-SA 3.0Nights turn raw in Sunderland each January, colder than in 84% of U.S. towns
The warmest part of a July day comes in at 84° on average. Precipitation peaks in October and eases off in February. Its yearly precipitation tops that of 74% of U.S. towns. Radiators earn their keep from November to April, the months that average under 50°.
A year in Sunderland at a glance
Each month’s typical high and low, and what it brings.
What stands out about Sunderland’s climate
Compared with towns across the U.S., with Sunderland’s place in Massachusetts beside it.
What a year in Sunderland feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 156 frost-free days a year
In half of years the last 32° night comes by May 5 and the first by October 8. Day counts come from NOAA’s station at Leverett #2, MA, 1.6 miles from the town’s center, at about the same height; frost dates and degree days from Amherst, MA, 6 miles away.
The 2023 USDA map puts Sunderland’s center in zone 6a: the coldest night of a typical winter, averaged over 1991–2020, reaches about −10°. Plant labels use the zone; frost dates tell you when to plant.
Freezing nights by month
Average nights at or below 32°
90° days by month
Average days at 90° or more
About 46 inches of snow a winter
Snow, measured at Sunderland, MA, is heaviest from January through February, about 13 inches a month. Precipitation (rain plus melted snow) adds up to 48 inches a year; October is the wettest month and February the driest. Rain or snow falls on about 130 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Sunderland
92% 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 Amherst, MA.
Living with Sunderland’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
156 frost-free days in zone 6a. The last frost comes by May 5 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 8.
Months with highs of 62–84° and lows of 40° or more: May, June, August and September. 35 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Sunderland from natural hazards, river flooding is the largest share (63%); heat waves, cold waves, winter storms and ice storms together are 9%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Sunderland and its neighbors
Every town next door is within a degree of Sunderland in January and July, closer than the 5 km grid can tell apart. Tap a town to see its climate.
Climates most like Sunderland’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 |
|---|---|---|---|---|
| Sunderland, MA | 15° | 84° | 48" | 46" |
| Stroudsburg, PA | 18° | 84° | 50" | 42" |
| Greene, NY | 15° | 82° | 44" | 48" |
| Ontario, OH | 17° | 82° | 42" | 49" |
| Hackettstown, NJ | 19° | 84° | 51" | 30" |
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 Sunderland averaged 1.7° warmer than the 1900s. The biggest change is in December (+3.6°).
A bigger shift than in 71% 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 Sunderland compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Sunderland’s place among Massachusetts’.
Sunderland weather by month
Highs, lows and precipitation from NOAA’s grid at Sunderland’s center; snow, wet days and snow on the ground from Sunderland, MA. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 34° | 15° | 3.4" | 12.8" | 12 | 20 | 14° – 32° |
| February | 37° | 17° | 3.0" | 12.4" | 10 | 19 | 13° – 34° |
| March | 46° | 25° | 3.6" | 8.8" | 10 | 12 | 29° – 45° |
| April | 59° | 35° | 3.9" | 1.4" | 11 | 1 | 42° – 51° |
| May | 71° | 46° | 3.8" | 0.0" | 13 | 0 | 54° – 64° |
| June | 79° | 55° | 4.6" | 0.0" | 12 | 0 | 64° – 71° |
| July | 84° | 61° | 4.2" | 0.0" | 12 | 0 | 68° – 76° |
| August | 83° | 59° | 4.3" | 0.0" | 10 | 0 | 67° – 75° |
| September | 75° | 51° | 4.5" | 0.0" | 9 | 0 | 60° – 67° |
| October | 62° | 40° | 4.8" | 0.0" | 11 | 0 | 46° – 57° |
| November | 50° | 31° | 3.5" | 1.6" | 10 | 2 | 36° – 46° |
| December | 39° | 22° | 4.2" | 8.7" | 11 | 12 | 23° – 41° |
| Year | 60° | 38° | 47.7" | 45.7" | 130 | 66 |
How much a month can swing
A normal is an average. February swings the most: from 1991 to 2020 its average ranged from 13° to 34°. June is the most reliable, staying within 7°.
Where Sunderland’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 Sunderland’s center.
- Snow: Sunderland, MA (NOAA station in town).
- Frost dates, heating and cooling: Amherst, MA, 6 miles away.
- Freezing nights, 90° and 100° days: Leverett #2, MA, 1.6 miles from the town’s center, at about the same height; 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 Sunderland’s climate
What is the weather like in Sunderland?
A typical July afternoon reaches 84°, a January night drops to 15°, and about 46 inches of snow falls in a normal winter. Colder January nights than 84% of U.S. towns; cooler July afternoons than 58% of U.S. towns.
How cold does it get in Sunderland in winter?
January nights average 15°. About 153 nights a year reach 32° or below and 12 reach 0° or below. In the coldest January of the last 30 years the month averaged 14°.
How much snow does Sunderland get?
About 46 inches in a normal winter at Sunderland, MA, heaviest from January through February, about 13 inches a month, with snow on the ground about 66 days a year.
How hot does it get in Sunderland?
July, with a typical high of 84° and a low of 61°. About 19 days a year reach 90° (Amherst, MA).
When is the first and last frost in Sunderland?
In half of years the last spring frost (32°) comes by May 5 and the first fall frost by October 8, about 156 frost-free days, at Amherst, MA.
What growing zone is Sunderland in?
Zone 6a on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about −10°.
What is the best time of year to visit Sunderland?
By one simple rule (highs of 62–84° and lows of 40° or more), May, June, August and September. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Sunderland getting warmer?
Yes: 1991–2020 averaged 1.7° warmer than 1901–2000 on NOAA’s grid. A bigger shift than 71% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Sunderland.
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.