In November , along the Frances, the weather should be crisp and dry during the day, unless it is cloudy and raining. The sun will still be warm, but rides lower across the sky from sunrise to sunset.
Use layering, as others have correctly said. Plan for continuous stretches of rain - and it will be a raw cold rain in November. While everyone has a rain gear choice, I always bring a sil-nylon hiking poncho to cover "everything." I also wear a waterproof parka with armpit zips.
Bring a pair of microfiber gloves, a stretch "watch" cap, and several Buffs.
Redundancy is good. Hyperthermia is bad - very bad. I would much prefer being hot, sweaty and wet, to being cold and wet, at any time of year. But in November, it is a definitely more a safety issue than a comfort issue.
Stay safe, stay warm - even if the trade off is sweating under your layers. You can always do things to cool down. But once you are hyperthermic, it is difficult to get warm, especially without help.
As temperatures will start to drop into single digits, celsius, overnight. Plan for cold early morning starts. Many of the albergues or hostals that are still open may not have much heat. A lot of them just turn the heat on for an hour or so in the morning to help pilgrims get up, and out.
You may have to push off early in the morning with single digit temperatures and perhaps icicles on the rain gutters. The light icing goes away as soon as the sun comes up though. Be careful as the early moring frost, or overnight showers do make for slippery walking surfaces. I advise using walking poles.
Finally, between about 15 October and the end of May, anticipate that snow CAN occur at elevations about about 700 meters ASL. If the overnight temperatures are low enough, and there is enough moisture in the air, you can wake up to a light blanket of snow.
Hope this helps.
Tom
