Sure, I could file and go fly IFR - both I and the aircraft are capable of that - but my question is specifically about the legal way to obtain weather info for a field with no reporting. Yeah, you can use all this other information: Weather Channel, nearby reports, area forecasts, whatever, to give you an idea of the conditions and help you decide if its a good idea to go fly, but without weather reporting on the field, there's no black and white "ceiling IS xxxx, visibility IS xxxx." "The weather channel said it was 1,000 and 3" doesn't seem like a reliable source for determining VFR vs IFR conditions.
I'm not trying to justify blurring the lines between being VFR and on an IFR flight plan, but your comment was that flying at 500' around an airport is a bad idea, when in fact its TERPS'd for lower, farther away from the runway, in worse meteorological conditions ("low visibility," as you put it, I assume you mean less than 3 SM - exactly 3 miles would be VFR). 1,000 and 3 (civilian side, at least) is VFR. Lower than that is IFR. If you're VFR, you must maintain VFR cloud clearances. So, the highest you could fly and legally be VFR in the pattern at this particular airport is 700'AGL, provided the weather is no less than 1,000 and 3. Like I said, visibility hasn't really been an issue out here lately, its all ceiling.
Not trying to start an argument or use this to determine if I should go fly today, this all just stemmed from a conversation a buddy and I were having yesterday since we've been flying around this airport with no wx. We were looking for an answer to our question on how you get the official weather when there is none. I'm pretty conservative when I choose to go flying, no worries there.