Haverhill Winter Pavement Data

Last reviewed 2026-07-25. Journalists, researchers, and community groups are welcome to cite any figure on this page with attribution and a link.

Most sealcoating advice on the internet is written for nowhere in particular. This page is the opposite: it collects the actual published numbers that decide how asphalt behaves in Haverhill, Massachusetts, so a property owner can judge a bid, a schedule, and a price against something real. Snowfall and temperature normals come from the 1991 to 2020 period. Freeze dates come from the nearest long-record station. Road salt figures come from the state. Soil and topography come from the city's own planning documents.

The short version: Haverhill is colder and snowier than Boston despite being only 35 miles away, it spends five consecutive months in a daily freeze-thaw pattern, it sits on two soil groups that handle water in opposite ways, and nearly 38 percent of its housing predates 1940. Those four facts explain almost every driveway problem in the city. The details, and what they mean for [sealcoating](/driveway-sealcoating) and [crack filling](/crack-filling), are below.

Five Months of Freeze-Thaw

Freeze-thaw is not about how cold it gets. It is about how often the temperature crosses 32F, because that is the moment water in a crack changes volume. A place that sits at 5F all winter does less crack damage than a place that swings across freezing every day. Haverhill is squarely in the second category, and the normals show it: from November through March the normal daily high is above freezing and the normal overnight low is below it, five months in a row.

One note on precision. Two published normal sets for Haverhill differ slightly on the January low, one giving 13F and the other 16F, which is normal for station-derived normals. Either figure makes the same point: the average January day in this city starts below freezing and ends above it. That is the mechanism behind long straight cracks, edge crumbling, and every pothole that comes back in the same spot.

Haverhill Is Not Boston

People routinely price and schedule Haverhill pavement work using Boston assumptions, and the numbers do not support it. Haverhill averages 57.8 inches of snow a year against Boston's 49.2, and the gap in overnight cold is larger still: a January normal low of 16F here against 23F on the coast. Thirty-five miles inland and north of the city is enough to change what falls out of a storm and how long it stays frozen on the ground.

The practical consequences are more plowing, more treatment material tracked onto private pavement, and more nights where afternoon meltwater refreezes. The National Weather Service office in Boston specifically flags black ice forming in early morning hours after snowmelt refreezes overnight, which is exactly the process happening inside a driveway crack at the same time it happens on the road surface.

The Working Season Is Shorter Than You Think

Sealer needs air and pavement temperature above roughly 50F and rising, plus 24 dry hours after application. The freeze record at the nearby Lawrence station, drawn from the NOAA Climatography of the United States No. 20 freeze and frost data, puts the median last spring freeze at April 20 and the median first fall freeze at October 20, for a freeze-free season of 182 days. That is the outer boundary, not the working window.

In practice the reliable Haverhill sealing season runs from about mid-May through early October, with June through September the core. That is roughly 20 weeks in which every crew in the Merrimack Valley is trying to fit an entire year of driveway and lot work. It is the single best argument for booking early rather than calling in August, and the reason a November date should be treated as a gamble on a warm stretch rather than a normal appointment.

It also explains the standard sequencing. Patching happens early so the mix can cure the 30 to 90 days it needs before sealer will bond to it. Crack filling and sealing happen in the warm dry core. Striping follows sealing by a day or two. Anything that slips past early October waits for spring, and the right move at that point is hot rubber in the cracks and nothing else.

Salt on the Streets, Sand on the Sidewalks

MassDOT applied 401,092 tons of road salt statewide in fiscal year 2019, against a 19-year average of roughly 495,412 tons. Its winter materials include rock salt, liquid magnesium chloride, liquid brine for pre-treatment, sand, and a rock salt and calcium chloride pre-mix used in reduced salt areas and in colder conditions. Whatever goes down on Route 125, Route 110, Interstate 495, or a treated city street reaches private driveways on tires, in slush, and in meltwater running off the street.

Haverhill adds a wrinkle that most cities do not. City code section 216-2 states that no salt shall be placed on any sidewalk or footway for the purpose of removing snow or ice, and directs property owners instead to remove the ice or cover it with sand within six hours. The city hands out sand for that purpose, up to two five-gallon buckets per storm. That means the typical Haverhill property is fighting chloride brine coming up the drive from the street and abrasive sand coming down the drive from the sidewalk at the same time.

The two do different damage. Chlorides keep water liquid below 32F and then release it to refreeze at lower temperatures, effectively adding freeze-thaw cycles, and they degrade the sealer film over time. Sand is chemically inert but mechanically aggressive: grit ground under tires scours sealer off the high spots and shortens the useful life of a coat. Neither is a reason to skip sealing. Both are reasons to rinse the driveway in spring and to treat two to three years as a maximum interval rather than an aspiration.

Old Ground and Old Driveways

Two soil associations cover about 63 percent of Haverhill, according to the city's open space and recreation plan: the Paxton, Woodbridge, and Mills group formed in compact glacial till, and the Windsor and Hinckley group formed in outwash sand along the Merrimack. The plan describes the till soils as having seasonal high water tables, slow permeability, and a cemented layer of silt and very fine sand that restricts downward movement of water, and rates the Paxton group as having severe limitations for high density development. The Windsor group carries only slight limitations.

Terrain sharpens the split. The city covers about 35 square miles, roughly 22,005 acres, running from flat river ground up to 337 feet at Ayers Hill. Pavement on the low outwash tends to fail at the edges; pavement on the hillside till tends to fail from water trapped underneath. The [sand or till guide](/sand-or-till-haverhill-driveways) covers how to tell which you are on and what to spend money on in each case.

Then there is the housing itself. American Community Survey five-year estimates for 2019 to 2023 count 10,558 Haverhill housing units built in 1939 or earlier, about 37.8 percent of the total, with another 2,569 from the 1940s and 1950s. A further 7,084 units, roughly 25 percent, went up between 1980 and 1999. That is a city where nearly half the housing predates 1960 and a quarter came out of one subdivision wave. Those two eras produce very different driveways, and pricing that assumes a uniform suburban drive will be wrong on a large share of Haverhill properties. Ranges for both are on the [cost page](/cost).

Sources & Methodology

Every figure above was taken from the primary sources below (accessed 2026-07-25). Where a number is derived (arithmetic on published figures) or covers a broader period or area, the text says so.

1. Current Results, Average Annual Snowfall Totals in Massachusetts — Haverhill 57.8 inches of snow and 20.2 snow days a year; Boston 49.2 inches and 23.0 snow days. Compiled from NOAA NCEI 1991-2020 climate normals.
2. Current Results, Massachusetts January Temperature Normals — Haverhill January normal high 35F and normal low 16F; Boston 37F and 23F. From NOAA NCEI 1991-2020 normals. Companion page gives Haverhill January snowfall of 16.2 inches over 5.8 snow days.
3. US Climate Data, Haverhill, Massachusetts Climate Normals — Month-by-month normal highs and lows used in the freeze-thaw table, plus annual precipitation of 49.96 inches. 1991-2020 normal period.
4. UMass Amherst, Massachusetts Freeze and Frost Occurrence Data — Lawrence station, the nearest long-record site to Haverhill: median last spring 32F freeze April 20, median first fall freeze October 20, 182-day freeze-free season. Source data is NOAA Climatography of the U.S. No. 20.
5. MassDOT Snow and Ice Control Program Annual Report, Mass. EEA — 401,092 tons of road salt applied statewide in fiscal year 2019 against a 19-year average near 495,412 tons.
6. City of Haverhill Open Space and Recreation Plan — Paxton-Woodbridge-Mills and Windsor-Hinckley soil groups cover about 63 percent of the city; till soils have seasonal high water tables and a cemented restrictive layer; city area about 22,005 acres, high point 337 feet at Ayers Hill.
7. Point2Homes Haverhill Demographics, from ACS 2019-2023 5-year estimates — Housing units by year built: 10,558 units (37.8 percent) built 1939 or earlier, 2,569 in 1940-1959, 4,350 in 1960-1979, 7,084 in 1980-1999, 3,331 in 2000 or later.