Windows in the winter

Not if it is done properly.

Think about your question.

Wouldn't the opposite be true if you had them installed in the summer when everything is "expanded"? When it gets cold everything would contract and the windows would be destroyed.

Those situations would really the limit when windows could be installed, wouldn't it? What if the contractor isn't available at the exact moment that your house is at equilibrium?

Should have done that with my shower door. It is two 30" glass panels, one stationary, one hinged, that fit perfect in winter but rub at the joint in summer. I figure the house moves about 3/16" seasonally.

Just thinking that thermal expansion is not the only factor. Humidity causes wood to expand and contract and I see doors sticking when humidity is high.

Should I be concerned having Windows installed in the wintertime? I figure everything is contracted and when it gets warm= (**on contrary everything shrinks with cold and expand when it warms up.**)

it will open and have drafts. I know they are made to expand and contract but is it better in spring?

...but not at the same rate.