The 27-year-old began the new World Cup season having won the last two rounds of the previous campaign to place fifth overall as Cathleen Martini took the title for the first time ever.
That ensured yet another German winner, Martini keeping alive a run spanning 11 seasons, however Humphries is well on her way to ending that dominance after five rounds of this campaign.
Humphries, who won Olympic gold at Vancouver 2010, took her fifth successive victory as the World Cup circuit moved to La Plagne, predictably leading after the first run and then holding on to it.
That also meant Humphries' sled became the first to win seven in a row on the World Cup circuit since the American No.1 sled won nine straight between 1999 and 2001.
The Canadian posted 1:01.55minutes from her first run for a lead of 0.20seconds over America's No.2 sled driven by Jamie Greubel while teammate Elana Meyers was 0.04 further back in third.
However instead of chipping away at Humphries' lead it was extended to 0.27, despite the 27-year-old and her brakewoman Chelsea Valois recording a slower time of 1:01.75.
Greubel posted 1:01.82 to remain second and beat Meyers by 0.24 although her fellow American comfortably wrapped up third ahead of eight-time overall World Cup winner Sandra Kiriasis.
Britain's Paula Walker finished tenth 1.51 behind Humphries and, having placed the same last time out, her progress appears to be stalling after two sixths and ninth from the first three rounds.
Fellow Brit Victoria Olaoye made her first World Cup appearance of the season and was solid if unspectacular, placing 18th overall over three minutes behind Humphries.