I have posted on this before, the patches and mixes are ok for temporary. they are not a permanent fix. Do the temporary now and repour it when it warms up. Cement should not freeze for minimum 48 hrs and preferably 7 days for initial cure. After the repour, use a concrete sealer that "gels" the surface. this is a spec product that can only be found at a place like Border Products... it will keep the water from penetrating the surface finish. It is supposed to cause the finished concrete to gel and making a water resist barrier. We used this stuff in Walk In freezers to protect the finish.