Cold weather roofing is not ideal but if you have an emergency or your situation requires it for other reasons, it can be done Safely and without any compromise of job quality or performance of the Shingle.
There is no upper or lower temperature governing when asphalt fiberglass shingles may be applied, as long as appropriate precautions are taken.
Such as having material stored in a warm place overnight , and loaded on the roof a few bundles at a time.
Adhesive will also have to be applied to edges.
Metal and Cedar material are not susceptible to temperature fluctuations and can be applied anytime.
Things to Consider
If any of this is a problem you should wait for warmer weather, but if you need to have your roof done now rest assured there is no reason it can't be done now. We have many years of experience in the Roofing Industry.