According to multiple sources, cold temperatures should not become a problem for most dogs until they fall below 45°F (7°C), at which point some cold-averse dogs might begin to feel uncomfortable. However, it is important to note that the temperature as it registers on a thermometer isn’t the only environmental factor that affects how dogs feel the cold. Other factors to consider include wind chill, precipitation, and cloud cover. Additionally, the size, age, and coat type of the dog can also play a role in how well they tolerate the cold. For example, dogs with thick, double-layered coats tend to be the most cold-tolerant, while dogs with exceptionally thin coats suffer the most in cold weather. Puppies, senior dogs, and dogs with underlying health problems may also have a harder time regulating their body temperature in cold weather.

Here are some general guidelines for how cold is too cold for dogs:

• Above 45°F (7°C): Should not become a problem for most dogs, but remember that size, age, and coat type matter.
• Below 45°F (7°C): Some cold-averse dogs might begin to feel uncomfortable.
• Below 32°F (0°C): Owners of smaller breed dogs, dogs with short or thin coats, and/or very young, senior dogs, dogs with health conditions, or sick dogs should pay close attention to their pet’s well-being.
• Below 20°F (-6°C): All owners need to be aware that their dogs could potentially develop hypothermia and frostbite. Never leave them outside in these conditions. Keep potty breaks short.

It is important to monitor your dogs behavior and well-being in cold weather and take appropriate measures to keep them warm and safe. This may include providing them with a coat or jacket, limiting their time outside, and ensuring they have access to a warm and dry shelter.