Mt Fuji in mid-Dec possibe?

Hello,
I have only 2 days available to sightsee in Japan. Dec 15/16th. A package I am interested in takes you to Mt Fuji for a cruise on Lake Ashi and cable ride atop Mt Komagatake.
Can I do this in mid-Dec? How cold would it be?
Or is this a crazy idea for mid Dec? Please advice.

Can I do this in mid-Dec?

Yes. Although, depending on the road conditions, the tour bus might not be able to go up all the way to the 5th Station of Mount Fuji.

How cold would it be?

Single digit temperatures in the morning. Maybe even freezing overnight. But not that cold during the day.

Or is this a crazy idea for mid Dec?

No, it is not crazy.

Touring to a lake near mt. fuji would be fine, but you wouldn't want to climb fuji in December.

Dohmo arigatoh!

I guess then dressing up as though I am off to a ski trip would work.

I don't mind so much about climbing the mountain as long as I can get to cruise the lake and see the mountain.

Many thanks!

I climbed it in August when the temparature was 33 (celsius) at the foot of the mountain and it was near freezing point at the top...December? Forget climbing it. You could go up by bus but it stops about half-way to the top.