Here's a general range to keep in mind:
* Normal temperature: 99.5°F to 101.5°F (37.5°C to 38.6°C)
* Fever: 102°F (38.9°C) or higher
It's important to note that a horse's temperature can fluctuate throughout the day. A rectal thermometer is the most accurate way to measure a horse's temperature.
If you are concerned about your horse's health, it's always best to contact a veterinarian for advice.