If it's colder than -20 I don't bring the outdoor horses in and ride. Around -20 I just give a light ride, that they aren't sweaty, and make sure they are really dry before going back out.
For horses who come inside at night, it's fine to ride at any temp, provided they are warm enough inside and have plenty of time to cool and dry off before going out again. These horses I usually ride in the evenings.
ETA I have a heated indoor/barn. I wouldn't ride outside below -10/-15
They say money doesn't buy happiness -- well happiness doesn't buy horses!
Last edited by ~*~anebel~*~; 01-21-2013 at 02:02 PM.