How to Keep Outdoor Cats Warm in Winter

October 20, 2026

Cats handle cool weather better than we do, but a freezing night is a different story. Whether you care for a cat who lives outdoors, look after feral cats in your neighborhood or simply have a catio cat who loves the fresh air, a few simple steps make winter much safer. This guide covers the most important one, a warm and dry outdoor cat house, plus bedding, placement, water and the warning signs to watch for.

Why an outdoor cat house matters in winter

A cat's main defense against the cold is its own body heat. The job of a winter shelter is to trap that heat and keep out the three things that steal it: wind, wet and cold ground. A small, enclosed, insulated space warms up quickly from the cat's body alone, which is why a snug cat house usually works better than a big, drafty shed or garage corner.

What to look for in a winter cat house

Insulation. Foil-lined or foam-insulated walls reflect body heat back toward the cat instead of letting it escape.
A waterproof shell. Wet fur loses heat fast. Look for waterproof fabric, sealed wood or plastic, and a roof that sheds rain and snow.
A raised floor. Cold and damp soak up through the ground. A house on a stand or legs keeps the floor dry and noticeably warmer.
A small door with a flap. The opening should be just big enough for a cat (about 6 to 8 inches) so it doesn't let all the warm air out. A flap blocks wind and snow.
The right size. Bigger isn't warmer. Choose a house that fits one or two cats comfortably without lots of empty space to heat.

Our Insulated Outdoor Cat House with Raised Stand was designed around exactly these points: a waterproof Oxford fabric shell, heat-reflecting foil insulation, a wind- and snow-resistant door flap and a raised stand that lifts the floor off cold, wet ground. It comes in three cube sizes, so you can match it to one cat or a pair of friends. You'll find more options in our outdoor cat houses collection.

Bedding: use straw, not blankets

It sounds backwards, but blankets, towels and old pillows are a poor choice for an outdoor shelter. They soak up moisture from the air and from wet paws, and then they stay damp or even freeze. Loose straw is the classic choice for outdoor cats because it stays dry and lets cats burrow in and trap warm air. Note that straw and hay are different: hay absorbs moisture and can turn moldy, so stick with straw.

For a catio cat who goes back indoors at night, a washable cushion is fine, as long as you bring it inside when it gets wet. Self-warming pads that reflect body heat are another good option for sheltered spots.

Where to put the shelter

Turn the door away from the wind. In most places that means facing it away from the prevailing winter wind, or toward a wall a few feet away.
Keep it off the ground. Use a stand, a pallet or a couple of bricks if the house doesn't have legs.
Find shelter from above. Under a porch roof, a deep eave or a covered catio corner, the house stays drier and snow doesn't pile up on top.
Choose a quiet spot. Cats feel safer away from foot traffic, dogs and busy doors.
Keep the doorway clear. After snow, check that the entrance isn't blocked.

What about heated cat houses and pads?

An insulated house that is dry and the right size is often enough on its own, but in very cold climates a heat source can help. If you add one:

Use a heating pad that is made and rated for outdoor pet use, ideally with a thermostat that keeps it at a gentle, safe temperature.
Protect the cord with a chew-resistant cover and route it so it can't be pulled or chewed.
Leave part of the floor unheated so the cat can move off the warm spot if it gets too warm.
Plug into an outdoor-rated outlet and check the cord and pad regularly for damage.

Don't forget water and food

Cats need fresh water in winter just as much as in summer, and a frozen bowl is no use. Check water bowls at least twice a day, use thick or insulated bowls, or consider a heated pet water bowl. Cats also burn extra energy staying warm in the cold, so outdoor cats may need a little more food. Put food and water near the shelter but not inside it, so spills don't make the bedding wet.

Winter safety checklist

Bang on the hood of your car before starting it on cold mornings. Cats sometimes crawl into warm engines.
Clean up antifreeze spills right away. It tastes sweet to animals and is highly toxic.
Avoid rock salt and de-icers near the shelter, or choose pet-safe products, and wipe paws after walks.
Bring catio cats inside at night when temperatures drop below freezing, and limit how long they stay out on very cold days.
Check any outdoor shelter regularly to make sure the bedding is dry and nothing is damaged.

Signs a cat is too cold

Shivering, curling up tightly and staying still, cold ears and paws, weakness or unusual sleepiness can all mean a cat is getting too cold. Move the cat somewhere warm and dry right away. If the cat seems weak, slow to respond or doesn't warm up, contact a veterinarian, since hypothermia and frostbite need professional care.

Keeping catio cats comfortable all year

If your cat enjoys a catio, winter doesn't have to mean staying indoors all season. Put an insulated house in a sheltered corner, add a cat flap so your cat can come back inside whenever they like (our 4-Way Locking Cat Flap has a brush seal that keeps drafts out) and keep visits short on the coldest days. Not sure which catio style fits your home? Read Catio or Cat Enclosure: Which Fits Your Home?

Ordering from Catio & Co.

We ship to the US, UK, Canada, Australia and New Zealand, with free tracked shipping on orders over $50. Most orders arrive in 7‚Äì15 business days, and you have 30 days to return an item if it isn't right for your cat.

Frequently asked questions

How cold is too cold for an outdoor cat?

There's no single number, because age, health, coat and wind all matter. As a general rule, take extra care once temperatures approach freezing, and make sure any cat outdoors has a dry, insulated, wind-protected shelter. Kittens, senior cats and cats with health problems should be kept indoors in cold weather.

Is an insulated cat house warm enough without heat?

Often, yes. A small, raised, insulated house with a door flap and dry straw bedding traps a cat's body heat very well. In very cold climates, a pet-safe outdoor heating pad adds an extra margin of warmth.