A CPR FLC STARTS THEIR CLB TOO EARLY ON THE TETERBORO 3 SID.

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WX ON GND WAS VERY BAD. RAIN AND WIND RPTED TO 40 KTS ON TAXI OUT. PNF BRIEFED THE SID -- ONE WE HAVE DONE MANY TIMES. RPTS OF CONTINUOUSLY MODERATE; OCCASIONAL; SEVERE TURB AT LOWER ALTS. PF (ME) BRIEFED THE DEP CLB. TKOF WAS EXCITING; THE CLB TO 1500 FT THEN L TURN TO PNS; ALL OK. THE AIRPLANE WAS UNDER CTL BUT THE INSTS WERE DIFFICULT TO SEE. APCHING 2000 FT THE FMS COMMANDED THE TURN TO THE DEP FIX; LANNA. I CONTINUED THE CLB TO 3000 FT. PNF SAID THE CLB WAS EARLY. HE DID NOT GET THE NDB NEEDLE SWING THAT HE WOULD; HAVING FLOWN OVER PNJ. HE WAS BUSY WITH RADIOS AND A CLRNC TO CLB TO 7000 FT WITH A HDG ASSIGNMENT. I LOOKED AT NDB AND IT SHOWED US ABEAM (NOT OVER) PNJ. I THOUGHT THE CLB WAS OK. PNF SAID LATER WE MAY HAVE CLBED 1 MI EARLY (BEFORE PNJ). LATER; I MEASURED THE DISTANCE FROM DEP END OF RWY 6 (TEB) TO PNJ ON LOW CHART; ABOUT 6 1/2 MI. THINKING BACK ON 'WHEN' THIS ALL HAPPENED; I STILL THINK WE WERE OK. WE HAD TCASII UP AND FOR SURE; NO TFC CONFLICT WAS NOTED. I ENGAGED AUTOPLT AT ABOUT 6000 FT AND THE REST OF THE TRIP WAS UNEVENTFUL. DEP CTLR DID NOT MENTION ANYTHING ABOUT ALT EXCEPT HE NEEDED EXPEDITED CLB TO 7000 FT; WHICH WE ALSO WANTED -- TO GET OUT OF THE TURB. PF AND PNF DECIDED TO RPT THE 'INCIDENT.' I DO KNOW THE WX; THE WORST I REMEMBER IN 8 YRS; WAS CONTRIBUTING TO THE CONFUSION. I JUST WANTED TO KEEP EVERYTHING (ACFT) UNDER CTL; WHICH I DID; BUT I LOST THE DETAIL OF XING PNJ; THEN CLB TO 3000 FT AS THE SID DICTATES.