CPR SMT APCH LNDG IN WX RPTED BELOW ARPT MINS FOR LNDG.

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IFR FLT FROM LIT TO CHILLICOTHE; MO; AND BACK TO LIT. 2 INST APCHS; PLUS HOLDING AT CHILLICOTHE ATE INTO FUEL SUPPLY. LANDED AT CHILLICOTHE; NO JET FUEL AVAILABLE (WE KNEW THAT). DEPARTED CHILLICOTHE FOR LIT. WX UPDATE ENRTE SHOWED LIT ABOVE MINS UNTIL PASSING HARRISON; AR. WE CALLED ADAMS TWR; THEY SAID PEOPLE WERE STILL GETTING IN. ARRIVING AT LIT RVR WAS DOWN TO 1600. OPERATING UNDER PART 91; WE SHOT THE APCH. AT PRECISION HEIGHT I SAW APCH LIGHTS. AT 100 FT AGL I SAW THE RWY. I CALLED RWY IN SIGHT; BUT ADDED; 'I DON'T THINK WE HAVE A 1/2 MI'. CAPT SAID; 'I'VE GOT THE RWY' AND LANDED. FAR 91.175(D) REFERS TO 'FLT VISIBILITY' WHICH CAN ONLY BE SEEN FROM THE COCKPIT. 91.175(H) REFERS TO RVR VALUES WHICH WERE RPTED FOR THIS RWY. FLT VISIBILITY WAS MORE THAN 1600 FT; BUT LESS THAN 1/2 MI. IT WAS ADEQUATE FOR A NORMAL LNDG. HOWEVER; THIS IS ONE THE FAA COULD NAIL US ON IF THEY WANTED TO. CONTRIBUTING FACTORS: FUEL STOP NOT MADE ENRTE TO LIT BECAUSE WX WAS HOLDING ABOVE MINS. AT START OF APCH AT LIT; FUEL ON BOARD ESTIMATED AT 1 HR 15 MINS. CLOSEST ALTERNATE; MEMPHIS; 35 MINS FLYING TIME. WX AT MEMPHIS 3000 SCATTERED; VISIBILITY 5 MI. WX S OF RTE FROM LIT-MEM FORECASTING TSTMS AND WORSENING CONDITIONS. I GUESS WE GOT CAUGHT UP IN GET HOMEITIS.