How to Help Feral Cats Survive the Winter: A Simple Guide for Beginners

This site is reader-supported. As an Amazon Associate I earn from qualifying purchases.

If you’ve noticed a stray or feral cat in your neighborhood, you’ve probably wondered how they get through the winter. The honest answer is: with difficulty. Outdoor cats are tough, but freezing nights, wet fur, frozen water and short days push them to their limits.

The good news is that you don’t need much money or experience to make a real difference. A few simple steps, most of which cost little or nothing, can help a cat get through the cold months safely.

This guide covers the four things every outdoor cat needs in winter (shelter, food, water and safety), plus how to tell when a cat needs more help than you can give.

Why winter is so hard on outdoor cats

Cats can handle more cold than many people think, as long as they stay dry and out of the wind. The real danger is the combination of cold, wet and wind. Wet fur loses its ability to insulate, and a cat that can’t dry off can quickly become dangerously cold.

The two biggest risks are:

• Hypothermia, when a cat’s body temperature drops too low. Signs include shivering, weakness, slow movement and seeming unusually sleepy or unresponsive.

• Frostbite, which usually affects the thinnest parts of the body: the ear tips, tail and paw pads. Affected skin may look pale or gray at first, then red and swollen later.

Cats also burn a lot more energy just staying warm, so food and water become even more important in winter.

1. Shelter: the most important thing you can provide

A good shelter doesn’t need to be fancy. What matters is that it’s small, dry, insulated and safe.

What makes a good shelter

• Small. A cat warms the space with their own body heat. A small shelter, just big enough for one to three cats, warms up much faster than a large one.

• Insulated. Walls and a floor that keep the cold out. Even a layer of foam board inside a plastic box makes a big difference.

• Raised off the ground. Set it on a pallet, a couple of bricks or some wood so it doesn’t sit on frozen or wet ground.

• Two exits if possible. Feral cats don’t like spaces where they could be trapped. A second door makes many cats far more willing to go inside.

• Small doorways, about 6 inches wide, to keep out wind and larger animals.

You can build one for very little

Many rescue groups recommend a simple homemade shelter:

1. Take a large plastic storage tote with a lid.

2. Line the inside walls and floor with sheets of foam insulation board, cut to fit. (A styrofoam cooler placed inside the tote works too.)

3. Cut a doorway about 6 inches wide through both the tote and the insulation, a few inches above the floor so rain and snow don’t blow straight in.

4. Fill the inside loosely with straw.

5. Put the lid on, and weigh it down with a brick if it’s windy.

If you’d rather buy one, there are ready-made insulated and heated cat houses. I compare the best options in my guide to the best heated cat houses for feral cats.

Use straw, never blankets

This is the single most common mistake. Blankets, towels and old pillows feel cozy to us, but outdoors they soak up moisture, get cold and can freeze. A cat lying on a damp blanket can actually lose heat faster.

Straw is different. It’s the dry, hollow stalk left over after grain is harvested, and it stays dry and lets cats burrow in for warmth. Don’t confuse it with hay, which looks similar but holds moisture and can turn moldy. You can usually find bales of straw at farm, garden and feed stores, especially in fall.

Where to put the shelter

• Somewhere quiet and out of the way, such as along a fence, beside a shed, or under a porch or deck.

• With the doorway facing away from the wind, and away from where snow piles up.

• Close to where the cat already likes to hide, if you know the spot.

Don’t be discouraged if the cat doesn’t move in right away. Many feral cats take days or even a couple of weeks to trust a new shelter. If yours is still being ignored, read Why won’t my feral cat use the shelter? for eight common reasons and how to fix each one.

What about heat?

If you have a safe, outdoor-rated power outlet nearby, a heated pad made for outdoor pets can turn a basic shelter into a much warmer one. Only ever use pads designed for outdoor use, with a chew-resistant cord. Never use an indoor heating pad, electric blanket or heat lamp in a cat shelter, as they can cause shocks or fires.

If you don’t have power, that’s fine. A small, well-insulated shelter filled with straw keeps many cats alive every winter.

2. Food: extra energy for cold nights

Cats burn more calories in cold weather just to stay warm, so a reliable food source matters even more in winter.

• Feed on a regular schedule, at the same time and place each day. Cats learn the routine and will be waiting for you.

• Give a little extra. A cat that’s well fed has more energy to stay warm.

• Dry food is easier in freezing weather. Wet food can freeze within a short time outdoors. If you give wet food, put it out when you can watch the cats eat, and pick up what’s left.

• Feed near the shelter, not inside it. Food inside a shelter can attract other animals and make the bedding dirty or wet.

A simple feeding station, such as a plastic tote turned on its side or a small covered box, keeps food and cats out of the rain and snow.

3. Water: often harder to find than food

People tend to think about food first, but in freezing weather, fresh water can be harder for outdoor cats to find than food. Puddles and ponds freeze, and eating snow uses up precious body heat.

Some ways to keep water available:

• Check water at least twice a day and replace it if it’s frozen.

• Use a wide, deep bowl rather than a shallow one. Deeper water takes longer to freeze.

• Dark-colored bowls can absorb a little warmth from the sun during the day.

• Avoid metal bowls in freezing weather, as a cat’s tongue can stick to frozen metal.

• Consider a heated water bowl if you have an outdoor outlet. These keep water from freezing, and many only switch on when the temperature drops near freezing, so they use very little electricity.

4. Safety: hidden winter dangers

Winter brings a few risks that are easy to overlook.

Check your car before you start it

Cats often crawl into car engines or wheel wells to soak up leftover warmth. Before you start your car on a cold morning, bang on the hood a few times, honk the horn, or check under the car. It only takes a few seconds and can save a life.

Antifreeze is deadly

Antifreeze often contains ethylene glycol, which tastes sweet to animals and is extremely poisonous. Even a small amount can be fatal. Clean up any spills right away, store containers tightly closed, and consider a pet-safer antifreeze.

Be careful with de-icers

Some ice melts and road salts can irritate cats’ paws, and cats may swallow them when they clean themselves. Where cats walk, use a pet-safe ice melt or sand instead.

How to tell when a cat needs more help

Sometimes a cat needs more than food and shelter. Contact a local animal rescue, TNR (trap-neuter-return) group or vet if you notice:

• A cat that is weak, wobbly or unusually unresponsive in the cold

• Signs of frostbite, such as darkened, swollen or crusty ear tips or tail

• A cat that is injured, very thin or clearly sick

• Kittens outside in freezing weather, especially without their mother

Do not try to grab or handle a frightened feral cat yourself, as you could easily be scratched or bitten. Local TNR groups often lend humane traps and can advise you on what to do next.

Your winter checklist

• A small, insulated, raised shelter, ideally with two exits

• Straw inside, never blankets, towels or hay

• Food at the same time every day, with a little extra in cold weather

• Fresh, unfrozen water checked at least twice a day

• Bang on your car hood before starting it on cold mornings

• Clean up antifreeze and use pet-safe ice melt

• Know your local rescue or TNR group in case a cat needs help

Helpful supplies

You don’t need to buy anything to help, but if you want to make your setup easier, these are the items that make the biggest difference:

• A bale of straw for bedding, from a farm or garden store

• An outdoor heated pet pad, if you have a safe outdoor outlet (see on Amazon)

• A heated water bowl to stop water freezing overnight (see on Amazon)

• An insulated or heated cat house, if you’d rather not build one. See my guide to the best heated cat houses for feral cats.

The bottom line

Helping an outdoor cat through winter doesn’t take much. Give them a dry, insulated place to sleep, food and water they can count on, and a little extra care around hidden dangers like car engines and antifreeze. Start with the shelter, since that’s where your effort makes the biggest difference, and be patient while the cat learns to trust it.

If you’d like more simple tips for keeping outdoor cats safe and warm, sign up for my email list below.