Horse Care in Cold Weather: Winter Feeding, Water, and Shelter Tips

Forage should stay at the center of the winter diet. Most adult horses need about 1.5% to 2% of body weight per day in forage on a dry matter basis, and many need more during prolonged cold spells. For a 1,000-pound horse, that often means roughly 15 to 20 pounds of hay daily as a starting point, with additional hay added when temperatures fall, especially for horses living outdoors.

Hay is usually a better first adjustment than adding large grain meals. Fermentation of fiber in the hindgut helps generate body heat, while sudden concentrate increases can raise the risk of digestive upset. If your horse needs more calories beyond what hay can safely provide, your vet or equine nutritionist may suggest changes such as a ration balancer, a higher-calorie forage source, or a carefully planned concentrate.

Body condition scoring is one of the best winter tools. Check ribs, topline, neck, and hindquarters every 2 to 4 weeks. A horse can lose condition gradually under a thick coat, so hands-on checks matter more than appearance alone.

A practical winter rule used by several extension programs is to increase digestible energy by about 1% for every 1°F below the horse's lower critical temperature. For some adult horses in a full winter coat, that lower critical temperature may be near 18°F, while horses in milder climates, clipped horses, thin horses, or horses exposed to wind and rain may need extra calories sooner.

As one example, University of Minnesota Extension notes that if a 1,000-pound idle horse needs 16 pounds of good-quality hay at 18°F, the same horse may need about 18 to 18.5 pounds when temperatures drop to 0°F. Wet hair coats, mud, and wind can raise needs even more because they reduce the insulating effect of the coat.

If your horse is easy-keeping or has metabolic concerns, do not assume more calories are always the answer. Some horses need more shelter and better hay access rather than more starch. Ask your vet how to balance warmth, weight control, and laminitis risk.

Reduced water intake is a common winter problem. Horses often drink less when water is very cold, and lower intake can reduce feed intake too. That combination can contribute to dehydration and increase the risk of impaction colic.

A typical 1,000-pound horse often drinks at least 10 to 12 gallons per day, though needs vary with diet, workload, and weather. Horses eating dry hay usually need more water than horses on fresh pasture. Extension and veterinary sources commonly recommend keeping water from freezing and, when possible, offering water that is cool to lukewarm rather than icy. Practical targets often fall around 40°F to 65°F.

Check troughs and buckets at least twice daily in freezing weather. Heated buckets or tank heaters can help, but cords and equipment should be safely installed. Some horses also drink better when offered loose salt, soaked hay cubes, soaked beet pulp, or a warm mash made from a feed they already tolerate well. Plain fresh water should always remain available.

Healthy horses do not always need a heated barn, but they do need a way to get out of wind, freezing rain, and wet snow. A three-sided run-in shed, natural tree line, or solid windbreak can make a meaningful difference in comfort and calorie use. Research summarized by extension programs shows horses use shelters much more often when snow and wind increase.

If horses are stalled more in winter, ventilation becomes a priority. Barns should allow fresh air exchange while limiting drafts at horse level. Poor ventilation can increase dust, mold exposure, and ammonia buildup, which may worsen coughing or other respiratory signs.

Keep bedding dry, remove manure regularly, and watch footing around gates, waterers, and shelter entrances. Ice, packed snow, and mud can all increase slipping and hoof problems. Daily hoof picking is especially helpful in winter.

Some horses need more support than others. Senior horses may struggle with dental wear, reduced chewing efficiency, or trouble maintaining weight. Thin horses have less insulation. Clipped horses lose natural protection from the hair coat. Foals, donkeys, and horses with chronic illness may also have different cold tolerance than a healthy adult horse in good body condition.

Pay extra attention if your horse has a history of colic, dental disease, equine metabolic syndrome, PPID, or poor body condition. These horses may need more frequent weight checks, dental care, ration review, and water monitoring. A horse that is not finishing hay, dropping feed, or standing hunched and dull in cold weather deserves prompt attention.

Blanketing can help some horses, but it is not automatic for every horse. A blanket that is wet, poorly fitted, or too warm can create its own problems. Your vet can help you decide whether blanketing fits your horse's age, coat, workload, and environment.

Call your vet promptly if your horse is drinking less, eating less, losing weight, acting colicky, passing dry manure, coughing more in the barn, or showing signs of weakness or shivering that do not improve with shelter and dry bedding. Winter problems often build gradually, and early changes are easier to address.

See your vet immediately if your horse has repeated colic signs, cannot keep warm, becomes recumbent, has labored breathing, or seems severely dehydrated. Winter management is not one-size-fits-all, and a tailored plan is especially important for seniors, hard keepers, and horses with medical conditions.