If she thinks it’s too cold for sex in the winter, it will be too hot for sex in the summer, and spring and fall won’t be any better. What she concealed before marriage you had a right to know.
We suspect she will want just enough intimacy to produce a child or two, which will be just enough to hold you in the marriage. She has a right not to have sex, and you have the right to have sex.
It appears she married the wrong person. Consider your options now that you know she is planning a long, cold, sexless marriage.
Tamara