Getting weather from the NWS's ADDS website (aviationweather.gov) is primary weather but there's no login to record your inquiries there unless you get the weather through the QICP login.
RELATED ARTICLE: MUST MY BRIEF BE QICP? (AND WHAT IS QICP, ANYWAY?)
Another source of confusion among pilots is whether their weather must come from a Qualified Internet Communications Provider (QICP).
The confusion over the propriety of accessing aviation weather from a non-QICP provider stems from a 2002 Advisory Circular on the topic, which did not explicitly state that QICP was only required for commercial ops (Parts 121 and 135), and not Part 91 flights.