When and How to Blanket Horses: A Practical Barn Guide
Blanketing is one of the more contentious topics in equine management. Ask five horse owners whether their horse needs a blanket in 40-degree weather and you'll get five different answers delivered with conviction. As a barn manager, your job is to have a defensible policy and apply it consistently, while respecting the individual needs of the horses in your care.
Understanding How Horses Regulate Temperature
Horses are remarkably well equipped to handle cold. A healthy horse with a full winter coat, adequate body weight, shelter from wind and moisture, and enough forage to fuel internal heat production can comfortably tolerate temperatures well below freezing without a blanket.
The key variables are coat condition, body condition score, shelter availability, and moisture. A horse that has been clipped, is underweight, lives in an exposed paddock, or has gotten wet is far more vulnerable to cold than an unclipped horse in good condition with access to a run-in shed.
Horses heat themselves primarily through hindgut fermentation. When they eat forage, the microbial activity in the hindgut produces heat as a byproduct. This is why access to free-choice hay in cold weather is more important for warmth than most blankets. A horse that runs out of hay on a cold night is a horse at risk of getting chilled regardless of what's on its back.
Temperature Guidelines
These thresholds are starting points, not absolute rules. Adjust based on the individual horse's coat, health, and housing.
Unclipped horses in good condition with shelter typically don't need blankets until temperatures drop consistently below 20 degrees Fahrenheit, and many don't need them even then. Clipped horses, senior horses, horses with health conditions, and horses that are underweight have much lower thresholds, often needing a blanket once temperatures drop below 40 to 50 degrees.
Wind chill matters significantly. A still 30-degree day is far less stressful than a 35-degree day with sustained wind and rain. Factor in what the weather actually feels like, not just the thermometer reading.
Blanket Types and When to Use Them
Sheet (0g fill): appropriate for clipped horses in mild temperatures, typically 40 to 60 degrees, or as a fly and rain barrier in warmer weather.
Light blanket (100 to 150g fill): suitable for clipped horses when temperatures are in the 30s to 40s, or unclipped horses in wet, windy conditions.
Medium blanket (200 to 250g fill): for clipped horses in the 20s, or unclipped horses in the teens. Good transition blanket for variable spring and fall weather.
Heavy blanket (300g or more fill): for clipped horses in extreme cold or horses with very little coat. Most unclipped horses in good condition rarely need this level of insulation.
A waterproof outer shell is important if horses live outside or in paddocks without complete shelter. A blanket that loses its waterproofing becomes a liability in wet weather, trapping moisture against the horse's coat.
Checking Fit
A poorly fitting blanket causes rubs, restricts movement, and can slip into dangerous positions. Check fit at the neck opening first. You should be able to fit two to three fingers between the horse and the blanket at the chest, and the blanket should sit well clear of the withers without pulling. The shoulder seams should sit at the point of the horse's shoulder to allow free movement.
The belly surcingles should be snug enough to prevent the blanket from swinging but not so tight they restrict breathing. Crossing surcingles is the standard configuration. Leg straps should allow the horse to walk and lie down comfortably. Check for rubbing behind the elbows and at the chest regularly.
Blanket Care
Wet blankets should be removed and dried before being put back on. A wet blanket defeats its purpose and can cause skin issues. Have a backup blanket available for horses that get wet frequently.
Clean blankets at least once per season, more often for horses prone to skin conditions. Most horse blanket laundry services charge $20 to $40 per blanket and re-waterproof the shell at the same time. Budget for this as part of your facility's seasonal preparation.
Inspect blankets at the start of each cold season. Check the waterproofing, the fill integrity, stitching on the surcingles and leg straps, and the buckle hardware. A blanket that looked fine in storage may have developed problems.
Managing Barn-Wide Blanketing
At a facility with 20 or 30 horses, blanketing becomes a significant daily task. Establish clear preferences for each horse in their profile, noting which blanket to use at which temperatures. BarnBeacon lets you log blanketing instructions per horse so staff always know the owner's preferences without having to ask.
Build a blanketing schedule based on the forecast so staff can prepare in advance. Morning turnout and evening stalling are the two transition points where most blanketing happens. Having a clear plan for each horse reduces the time spent making decisions and the risk of mistakes when the barn is busy.
Communicate blanket-on and blanket-off decisions to owners, especially when you're deviating from normal protocol due to unusual weather. Owners appreciate knowing their horse's care is being actively managed rather than left to chance.