Roy Smith wrote in
:

Let's say for example my FBO has a certified weather observer on
staff. I call up on unicom, ask for the weather, and am told it's
5000 broken and 2 miles. Does that count as "reported"? When I ask
ATC for a contact approach, they won't have that observation. Do I
just tell the controller that I've got a report from the FBO?

You just tell him that you have the weather. I do this all the time,
flying approaches to slimeholes in the backwaters of south Louisiana,
using weather from company observers, under Part 135. They're certified,
and do make supplemental observations to the NWS, but mostly they just do
observations for us when needed. It's the same as any other weather
report, and the same as if you get it from a tower. The ATC specialist
doesn't care where the weather came from, or how you got it. All he
cares about is that you can get on the ground and out of his airspace.
Tell him you have the Podunk weather, want to fly the approach, and he'll
give you a clearance.

--
Regards,

Stan

"They that can give up essential liberty to obtain a little temporary
safety deserve neither liberty nor safety." B. Franklin