Agree with the Confused One, call the ATC and hear if they have any restrictions against vectoring for a visual approach into a non-instrument runway.
For the most part, there's nothing keeping ATC from it, unless there's a local regulation.
What I've been grinding my brain about for a long time is, you cannot give a visual approach if the ceiling is below the initial approach level, unless the aircraft is established in the level...... And so on.... You all know the drill.
And you cannot vector for a visual approach if the ceiling is below the vectoring altitude.....
How the hell do you then handle it if.... And bear with me here.... The initial approach altitude is 3100ft agl,and the minimum vectoring is 3200ft agl... And the entire approach sector is sky clear, but the clouds over the field give you the ceiling of 3000ft agl??
Everyone and his mother will try to call for a visual approach, but I can't find the writing allowing it (until they're on the final anyway)