We had a lovely mild dry night this weekend riding the top Norfolk coast road, so you may be just as lucky another 5 weeks later.
Maybe.
I wouldn't bet on it. November is usualy the turning point in the weather. I would guess that your chances of having a mild night without rain, or at least not a lot of rain would be around 25%. November can be brutally cold (even icy), wet, windy or all three. You might get thick fog too.
I remember my first ride of the 2007 Audax season in November. It was bloody freezing! It took a long time for it to warm up to just being very very cold. Then it got colder again. It's worse at night.
Wet weather is usualy less cold, but you can get very cold nights with rain too. It does make a big difference.
We were very lucky on our 600. I was expecting much colder and possibly some rain when I first thought of the ride.
Even if you are lucky with the weather in November, I doubt that the temperatures in celcius will be more than a dozen. It can make a very big difference.
I'm with NSTN on icy roads too. It's not worth the risk.