IFR general aviation aircraft noted weather; fog bank; had completely dissipated from the landing airport and requested a visual approach but was denied a clearance by the tower; ATC noting the official weather that had not yet been updated; reporter was finally granted SVFR clearance with; 'land at your own risk'; addendum.

Narrative

While flying into the airport on an IFR flight plan; the ATIS was calling 1/2 mile & RVRs. The weather was old because as I flew closer to the base; I could see the fog bank had moved east of the field and field was CAVU. I called the field in sight and requested visual approach and was denied since Approach only had the old weather. Instead of taking vectors for south of the VFR field; for an ILS; I canceled IFR and contacted Tower. Tower seemed very confused; asking if I could accept 'special VFR;' which I accepted. I was cleared to land. With my gear down and on short final I was told to climb to 3000 FT and contact Approach. Since my gear was down; and I was short final (field was completely VFR -- ceiling unlimited (blue sky); no fog; mist; etc visibility unlimited). I asked if there was any way I could just land since flight visibility was unlimited. The Tower said; 'Land at your own risk' and I accepted; landed; and was told to call Approach. They said the official weather was 1/4 mile fog and therefore they couldn't let me land VFR by their rules. I said that either the transmisometer was faulty; or someone forgot to update the weather when the fog bank passed because the airport was completely and totally VFR the whole time during my arrival.