I have Raynauld’s and live in a very cold climate. My cold weather fix is mutli-focal.
#1. I take Niacin pre-ride. It is a vasodilator and will help improve blood flow to your extremities. You should do this only under doctor supervision.
#2. I wear a ridiculous amount of layers and coats with lots of interior pockets.
#3. I put those “hot hands” heat warmers in all my pockets. So, any given time I ride I wear a warm long johns + sweater over + fleece over that (and 2 hot hands in fleece) then a light jacket (hot hands in those pockets) and an overcoat that is down + 3 hot hands in that. I also put “hot toes” in my boots.
Then I wear heavy gloves while getting ready to ride. Then once horse is tacked up but not bridled I go into bathroom, take off extra warm gloves and run hot water over hands. Then I put on my normal riding gloves (I hate thick gloves where I can’t feel horses mouth) and off I go. Usually by the end of ride I’m hot and shedding layers and hands are warm/pink. AS SOON as I’m done it all has to come back on though as the cool down can be harsh!
This has gotten me - a girl with pretty serious Raynauld’s - through it without anything more than a bit of pain/cold fingers here and there.