Unless it freezes pretty hard it won't bother them. Even if it should I would think they would come back and just be a little later.

They did fine. We had just a light frost, and no damage. Thank you bob414,
kay

Clematis are remarkably frost tolerant. All of mine have been budding up vigorously for the last month or so and we had a cold snap a couple weeks ago with nighttime temps dipping into the low 20's-high teens. No issues with the clems at all, even the armandii that is full of flower buds.

Thank you, gardengal48,
I have buds on most of them, but they weren't hurt at all that I can see. I am really looking forward to the blooming this year.
kay