Jim Macklin wrote:

In any case, the pilot doing a contact approach must
maintain a flight visibility of 1 sm while the controller
can't issue the clearance unless the visibility is reported
as 1 sm. At airports without official weather reporting,
the pilot can report to ATC that visibility is such and such
and he can maintain VMC and request a contact approach, the
pilot become the weather observer.


Negative. Issuance of clearance for a contact approach requires a
reported ground visibility is at least 1 statute mile. At airports
without official weather reporting a contact approach is not available.