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raccoons — where they go in a New Hampshire winter
Winter: ON
Daniel Brady · NH-Licensed Pesticide Applicator · License #782664
Reviewed by Daniel Brady

Where Do Raccoons Go In The Winter?

Winter moves them into your chimney or attic
Raccoons don't hibernate, no matter how still your chimney sounds in January. Per NH Fish & Game, raccoons "are not hibernators, but may appear so during extremely cold weather" — they use torpor, sleeping for stretches of up to a month on stored fat without the dramatic drop in body temperature or heart rate a true hibernator shows, then rouse and forage on the next warm night. Winter doesn't remove the problem; it pushes a raccoon toward the best insulated den around, and an uncapped chimney or attic mimics a hollow tree perfectly.

At a glance

  • Winter’s effect: Winter moves them into your chimney or attic
  • Where they go: Tree cavity or den
  • How far: On your structure
The honest answer

The short of it

The verdict
Winter moves them into your chimney or attic

A raccoon in January isn't hibernating in the woods. It's dozing in your chimney, waiting for the next warm night to raid the trash.

The one question nobody else answers

Does winter actually help you?

Every reader assumes the answer is yes — that winter is a break. For the pests that matter most in a New Hampshire home, it is the opposite. Here is where this one lands.

The winter switch
Winter moves them into your chimney or attic

A raccoon in January isn't hibernating in the woods. It's dozing in your chimney, waiting for the next warm night to raid the trash.

Does winter help you?

For Raccoons, the winter switch is ON — winter makes it worse.

Most people assume

That raccoons hibernate through the winter the way the word is loosely used for any animal that disappears when it's cold.

What actually happens

NH Fish & Game is direct about it: "Raccoons are not hibernators, but may appear so during extremely cold weather. Individuals can sleep for up to a month, but they do not lower body temperatures or heart rates as dramatically as other hibernating mammals." The fuel for that long sleep is fat — NH Fish & Game notes raccoons store roughly one-third of their body weight as fat going into winter, enough that they don't need to eat during the coldest stretches. They stay denned through severe cold and come back out to forage on milder nights, and when a hollow tree isn't available, an attic, chimney, or space under a deck works just as well.

The line

A raccoon in January isn't hibernating in the woods. It's dozing in your chimney, waiting for the next warm night to raid the trash.

So — does winter help you?
No — cold weather is exactly what drives raccoons toward an insulated den, and a heated chimney or attic is the best one in the neighborhood.
What to do in January
Cap uncapped chimneys, secure trash, and listen for heavy thumping, dragging, or chittering and growling from an attic or flue. NH Fish & Game notes raccoons specifically select a house with a fireplace and chimney to give birth in spring — so a winter chimney occupant is often scouting or already holding next spring's maternity den, which is why capping it once confirmed empty matters now, not later.
The literal question

Where they actually go

Tree cavity or den

a hollow tree — or the smoke shelf of your uncapped chimney, which mimics one almost perfectly

How far from you
  1. Inside your house
  2. On your structure
  3. In your yard
  4. Nearby outdoors
  5. Gone

They are on your structure.

What the place actually is

Raccoons prefer elevated, dry, wind-protected cavities, and in cold regions they sometimes den communally, huddling together to share body heat (Wildlife Illinois / University of Illinois Extension). A chimney flue or an attic void offers exactly that profile — elevated, dry, sheltered from wind — which is why a raccoon denning in a structure isn't an aberration, it's the animal doing what it would do in a hollow tree, just in your house instead.

Can you see them?
Rarely, and that's part of the problem. You mostly hear them — heavy, slow movement overhead or in a flue, especially at night or during a warm spell — or find the evidence: droppings, latrine sites, and torn soffits, fascia, or shingles where one forced entry.
Where the myths die

How they actually survive it

The survival mechanism

Torpor — not hibernation

Torpor — an extended waking dormancy, not hibernation

Is it hibernation? No — torpor
"Hibernation" implies a deep, multi-month metabolic suppression the animal can't easily interrupt. Raccoons show the opposite pattern within their long sleep bouts — they wake and leave repeatedly through the winter, which is exactly why trash raids and chimney noise continue in every mild stretch rather than stopping until spring the way a true hibernator's would.
How it works

A raccoon's winter dormancy is metabolic slowdown and long sleep bouts, up to a month at a stretch, fueled by fall fat reserves — without the dramatic body-temperature or heart-rate drop that defines true hibernation (NH Fish & Game). Animal Diversity Web adds that raccoons can reach up to roughly 50% body fat by early winter and lose up to half of that body weight over the season while metabolic rate and body temperature stay comparatively constant, which is precisely why they rouse quickly and keep foraging on any mild night.

The winter myth

What everyone gets wrong

The myth

"Raccoons hibernate, so a quiet chimney or attic in winter means nothing is really happening in there."

Why people believe it

It's a fair inference from what you observe: a raccoon can vanish from view for weeks at a time and sleep for up to a month straight, which looks exactly like hibernation from outside a wall or flue.

The correction

NH Fish & Game is explicit that raccoons are not hibernators — body temperature and heart rate stay relatively high through the long sleep bouts, and the animal rouses and forages on warm days rather than staying under for the whole season.

Why it matters
Assuming a raccoon is 'hibernating and harmless' means ignoring chimney or attic noise until spring — which is exactly when NH Fish & Game notes raccoons commonly give birth in a chimney den. What looked like a quiet winter guest becomes a litter, contaminated insulation, and a rabies-vector animal denned inside an occupied structure.
What you would actually see

The signs in January

What you would actually see
4
  • Heavy thumping or dragging sounds in an attic or chimney, especially at night or during a warm spell
  • Chittering, growling, or chattering vocalizations from inside a flue or ceiling
  • Tipped-over trash cans and scattered garbage overnight
  • Latrine sites (a repeated bathroom spot) and torn soffit, fascia, or shingles where entry occurred
What it means
Sustained heavy movement rather than light scratching points to a raccoon rather than a squirrel; the size and slowness of the noise is the tell.
Easily confused with
Lighter, faster daytime noise is more likely squirrels; steady nighttime scurrying inside a wall is more likely rats or mice.
What to do about it

The honest winter action

What genuinely works right now, and — at equal weight — what does not. This is where we decline the work there is no honest reason to do in January.

The honest verdict
Act now
What works now

Chimney caps, secured trash, and professional exclusion or removal. Raccoons are strong, capable of tearing open a poorly secured entry point, and a documented rabies-vector species — this is not a DIY job.

What does not work now

Using fire or smoke to drive a raccoon out of a chimney — it can kill dependent young that can't yet climb out, and it creates a real fire and carbon-monoxide hazard in an occupied home. Relocation may also be legally restricted for a rabies-vector species in New Hampshire and should not be assumed as an option.

Do not
  • Don't use fire or smoke to drive a raccoon out of a chimney — it risks killing young and creating a hazard in the home
  • Don't approach or handle a raccoon directly at any time of year — treat it as a rabies-vector species
  • Don't assume a quiet chimney in January means the den is empty or the problem has resolved on its own
Our honest lane

Winter raccoon exclusion is a legitimate 'call now' — this is genuinely peak denning season, and a chimney or attic occupant tends to become a spring maternity problem if left alone. What Anchor never does is handle a raccoon bare-handed or assume one is harmlessly 'asleep for the winter.'

The health angle

Named, proportionate — and routed to a doctor

Rabies — NH designates the raccoon a Rabies Vector Species, and NH Fish & Game notes raccoons are involved in roughly half of all reported rabies cases in the state

Caution
Who is at risk
  • Anyone who approaches, handles, or is bitten or scratched by a raccoon
  • Pets that encounter a raccoon outdoors
Precautions
  • Never approach or handle a raccoon, even one that appears docile or sick
  • Keep pet vaccinations current and pets away from raccoon activity
  • Treat daytime activity paired with a loss of fear of people as a warning sign, not a curiosity
When to seek care

Seek medical care immediately if bitten, scratched, or exposed to saliva. Contact animal control rather than approaching a raccoon that is wandering fearlessly in daylight or showing signs of disorientation.

In depth

The full picture

01

The one-word answer that's wrong

"Raccoons hibernate" is one of the most confidently wrong answers in this entire hub, and it comes from a genuinely reasonable observation: a raccoon can disappear for weeks at a stretch during a cold snap and sleep for up to a month straight. NH Fish & Game addresses this directly — raccoons "are not hibernators, but may appear so during extremely cold weather." The appearance and the reality are two different things, and the gap between them is exactly where the myth lives.

02

Where a raccoon actually spends January

A raccoon's ideal winter den is a hollow tree — elevated, dry, wind-protected. When one isn't available, the smoke shelf of an uncapped chimney or the void of an attic offers nearly the same profile, which is why raccoons move into structures rather than tolerating an inferior natural site. Wildlife Illinois and University of Illinois Extension note that in cold regions raccoons sometimes den communally, huddling together purely to share body heat — the same logic that makes a heated human structure so attractive by comparison.

Once settled, a raccoon isn't there passively for the season. NH Fish & Game notes raccoons specifically select a house with a fireplace and chimney to give birth in spring, which means a raccoon that's already denning there over the winter is frequently scouting — or holding — next season's maternity site.

03

Torpor, precisely — and why it isn't hibernation

The real mechanism is torpor: long sleep bouts, up to a month at a time, fueled by fat reserves that Animal Diversity Web documents reaching up to roughly 50% of body weight by early winter, with metabolic rate and body temperature staying comparatively constant rather than crashing the way a true hibernator's would. That's the physiological reason a raccoon rouses easily and keeps foraging on any mild night rather than staying under until spring.

The practical difference between torpor and true hibernation is the entire reason "they're asleep, leave it" is bad advice for raccoons specifically. A hibernating animal (bats, elsewhere in this hub) is genuinely committed for months. A raccoon in torpor is one warm night away from raiding your trash again — which is exactly the behavior homeowners report all winter.

04

Why the myth costs more with raccoons than almost any other animal here

Believing a raccoon is hibernating and therefore harmless leads homeowners to ignore chimney or attic noise until spring — the same window NH Fish & Game says raccoons use to give birth in exactly that kind of structure. What started as a winter nuisance becomes a litter of young, contaminated insulation from droppings and urine, and a documented rabies-vector animal denned inside an occupied home.

The honest fix is capping the chimney and confirming the den is empty before the weather warms, not waiting for a season that was never actually going to remove the animal in the first place.

Key takeaways
6 points
  • Raccoons do not hibernate — NH Fish & Game is explicit that they are not hibernators, even though they can sleep for up to a month at a stretch.
  • The real mechanism is torpor: body temperature and heart rate stay relatively constant, and the animal rouses to forage on any mild night.
  • Raccoons store up to roughly half their body weight as fat by early winter to fuel these long sleep bouts.
  • A chimney or attic mimics a hollow tree — elevated, dry, wind-protected — which is exactly why raccoons den in structures.
  • Raccoons commonly select a house with a chimney specifically to give birth in spring, so a winter occupant can become a spring maternity problem.
  • Raccoons are a documented rabies-vector species in New Hampshire — never approach, handle, or attempt DIY removal.
New Hampshire context

What this looks like in a New Hampshire house

Manchester's first hard frost lands around October 19 to 29 in a typical year (NOAA), which is roughly when raccoons finish fattening up and start settling on a winter den. Older New Hampshire homes with uncapped chimneys are close to ideal habitat — the flue offers the elevated, dry, wind-sheltered profile a raccoon would otherwise look for in a hollow tree, and a mid-winter thaw is exactly when a denning raccoon is most likely to rouse, forage, and be heard moving again.

If you're hearing thumping in a chimney or attic in January, the honest plan is to confirm the den is empty and cap the chimney now — not to wait, since a winter den frequently becomes next spring's birthing site in the same structure.

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ManchesterNashuaConcordDerryBedfordSalemHudsonAmherst
The other half of this question

Want the full 12-month picture for raccoons?

This page answers where they go in winter, and whether winter helps you at all. The timing guide answers the other question — when they are active, month by month, across the whole New Hampshire year.

See the 12-month timing guide

A quiet chimney in January doesn't mean an empty one.

Raccoons use torpor, not hibernation — they rouse and forage all winter, and a den in your chimney now is often next spring's birthing site. Anchor caps, excludes, and confirms empty before sealing.

Get a Free Inspection(603) 785-0118
Follow-up questions

Frequently asked

Sources & citations(7)
  1. NH Fish & Game — Raccoon (Procyon lotor) species profile

    Raccoons are not hibernators; store roughly one-third of body weight as fat; chimney denning and birthing; ~50% of NH rabies cases involve raccoons; Rabies Vector Species

    govverified 2026-07-16
  2. Animal Diversity Web, University of Michigan — Procyon lotor

    No true hibernation; metabolic rate and temperature stay comparatively constant; up to ~50% body fat and up to 50% overwinter weight loss

    academicverified 2026-07-16
  3. USDA Forest Service, Fire Effects Information System — Procyon lotor

    Hollow trees are the most-used natural winter den site

    govverified 2026-07-16
  4. Wildlife Illinois (University of Illinois Extension / Illinois DNR) — Raccoon

    Raccoons do not hibernate; den for several days in severe weather; communal denning; attic and chimney denning

    extensionverified 2026-07-16
  5. Pedersen et al. 2018, Heliyon (PMC)

    Raccoons as a primary terrestrial rabies reservoir in the eastern United States

    academicverified 2026-07-16
  6. NH Department of Health and Human Services — Zoonotic Diseases

    Raccoons among the primary wildlife reservoirs for rabies in New Hampshire

    govverified 2026-07-16
  7. NOAA National Weather Service, Gray/Portland ME (GYX) — Concord, NH Seasonal Climatology (1991–2020 normals)

    Concord, NH (nearest NWS GYX first-order station to Manchester) First Fall Freeze normal, i.e. first hard frost typically ~Oct 19-29

    govverified 2026-07-16

Written & reviewed by

Verified

Daniel Brady

NH-Licensed Pesticide Applicator · License #782664 (NHDAMF, RSA 430)

Daniel Brady is the New Hampshire–licensed applicator behind Anchor Pest Services, a family-owned pest control company serving the Manchester area since 2017.

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Last updated Jul 2026

Honest pest help for New Hampshire homes

Winter Is Genuine Raccoon Denning Season — Call Now

Raccoons don't hibernate, and a heated chimney or attic beats almost any hollow tree in the neighborhood. What Anchor Pest Services does is confirm the den, cap the chimney or seal the entry once it's empty, and handle a rabies-vector species the way it should be handled — never bare-handed, never with fire or smoke. Family-owned since 2017, NH license #782664, serving Manchester, Nashua, Concord and nearby towns.

Get a Free Inspection(603) 785-0118
  • Honest advice — we confirm the den is empty before sealing anything
  • NH-licensed applicators (#782664) — free inspection, same-day service
  • Professional exclusion for rabies-vector wildlife across southern and central New Hampshire

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