How Cold Is Too Cold for Dogs?

Cold becomes a concern for some dogs below 45°F (7°C), small and thin-coated dogs can be in danger below 32°F (0°C), and any dog can develop hypothermia or frostbite below 20°F (-7°C) if they stay out for a long stretch. Those numbers are a starting point, not a rule. Coat, size, age, wind and wet fur all move the line.

A good everyday test comes from vet schools: if it is too cold for you, it is probably too cold for your dog. The rest of this guide helps you refine that gut check.

A rough temperature guide

These thresholds come from veterinary guidance and apply to time spent outdoors, not a quick dash to the yard.

In freezing weather, a veterinary emergency specialist at Washington State University advises that most dogs, and certainly thin-coated ones, should get access to a warm space after no more than 10 to 15 minutes. The colder it is, the sooner hypothermia can set in, so cut outings shorter on bitter or windy days.

Time matters as much as the number on the thermometer. Once the temperature drops below freezing, frostbite can begin in as little as 30 minutes, and wet fur makes it more likely.

What changes the number

The same temperature feels very different to two dogs. Look at these factors before you head out.

• Coat. Thick, double coats, as on Huskies, Newfoundlands and Samoyeds, handle cold best. Very thin coats struggle. Our cold-weather dogs list shows the breeds that cope best.
• Size. Small dogs lose heat faster than large ones. A Chihuahua will be chilled long before a Newfoundland.
• Body fat. Lean dogs lose heat quickly. Do not add weight on purpose for winter.
• Age and health. Puppies, seniors and dogs with health problems are less able to keep their body temperature steady.
• What your dog is used to. A dog from a warm climate, or one hit by a sudden cold snap, is more at risk than one that has adjusted gradually.
• Wind and wet. Damp fur, rain, snow, fog and wind chill all make cold feel worse, and swimming in cold water counts too.
• Sun and cloud. Dark coats soak up sunlight on a clear day and stay warmer than pale ones. A gray, cloudy day makes the same temperature harder to handle.

Breed is only a rough guide. A lean, older or underweight dog from a cold-hardy breed can still feel the chill, and a dog with a health problem may tolerate far less than the numbers suggest. For your own dog, your vet can give the best advice.

Signs your dog is too cold

Your dog will usually tell you early. Watch for shivering, whining, a tucked tail, slowing down, lifting the paws and reluctance to keep walking. Some dogs suddenly seem anxious or try to find a warm spot. Head inside the moment you see any of these.

Hypothermia and frostbite: what they look like

Hypothermia means the body temperature has dropped below normal. Shivering and curling up for warmth are usually the first signs, often with sluggishness, low mood and paleness. Other signs include delayed reflexes, dilated pupils, and a heart rate and breathing that speed up and then slow down. Shivering may stop as hypothermia progresses, and a dog can lose consciousness.

Frostbite happens when tissue freezes. It mostly affects the paws, ears, tail tips and nose, and wet fur makes it more likely. The skin may look pale, gray or blue and feel cold. It can be painful or swollen, with stiffness, blisters or, later, blackened skin. The full damage may take a few days to appear.

What to do if you think your dog is too cold

1. Get your dog somewhere warm and dry. Move them gently and keep movement to a minimum.
2. Wrap your dog in blankets. Warm them gradually.
3. Call your vet right away. Hypothermia and frostbite both need professional advice.
4. Do not rub frostbitten skin, and do not use direct heat such as a hair dryer or heating pad.

Blankets are usually enough only for mild hypothermia. Moderate cases need active external warming, and severe cases need treatment such as warm IV fluids, so let your vet guide anything beyond blankets.

Making cold-weather walks safer

• Shorten walks. In very cold weather, go for brief, frequent outings instead of one long one.
• Clear a path. If snow is deep, shovel a track near the door so small dogs are not wading through drifts to reach a toilet spot.
• Dry your dog first. Towel off damp fur before heading out, and again when you get home.
• Add layers where needed. A sweater helps a thin-coated dog in a mild chill. For colder weather, use an insulated, windproof, water-resistant coat. Read our guide to dog gear for cold weather for fitting tips.
• Protect paws. Waterproof boots with traction shield paws from snow, ice and road chemicals. See our guide to winter hazards for dogs for what else lurks on cold roads.
• Watch the ice. Ice is slippery for any dog and especially hard on dogs with arthritis. Keep dogs off frozen ponds and lakes.
• Never leave your dog outside unsupervised in extreme cold, or alone in a car.

When to call your vet

Contact your vet right away if your dog is shivering hard and will not warm up, seems sleepy or confused, or has pale, gray, blue or blistered skin on the paws, ears, tail or nose. The same goes for dogs who limp or refuse to walk after being out in the cold. When in doubt, call: cold injuries are easier to treat early.

Frequently asked questions

Is 20°F (-7°C) too cold for dogs?

It is cold enough that any dog can develop hypothermia or frostbite if they stay out for an extended time. Short toilet breaks are usually fine for a healthy adult, but small, thin-coated, young, old and sick dogs need extra care. Ask your vet about your own dog.

How long can a dog stay outside in freezing weather?

There is no single answer, because it depends on coat, size, age, wind and wet. A Washington State University veterinary emergency specialist advises that most dogs, and certainly thin-coated ones, should have access to a warm space after no more than 10 to 15 minutes in freezing temperatures. Go in sooner if your dog shows any signs of cold.

Can dogs get frostbite?

Yes. The paws, ears, tail and nose are most at risk, and wet fur raises the risk. Signs include skin that is pale, gray or blue, cold, painful or swollen. The damage may take days to show, so see a vet if you suspect it.

Do dogs with thick coats ever get cold?

They tolerate cold better, but they are not immune. Wind, wet fur and long exposure can still chill any dog, and a dog that is not used to cold weather may struggle, especially after a sudden temperature drop.

Written from veterinary sources by the Pawsplained editorial team. Not yet reviewed by a veterinarian; this is general information, not a diagnosis or treatment plan. Updated Oct 30, 2026. Editorial policy

Sources

1. PetMD: How Cold Is Too Cold for Your Dog?
2. Washington State University College of Veterinary Medicine (via The Inlander): When is the cold too cold for your pet?
3. Cornell University College of Veterinary Medicine: Winter safety tips
4. AKC: Hypothermia in Dogs: How Cold Is Too Cold?
5. AKC: Can Dogs Get Frostbite?