Proctor, who finished sixth in Russia, produced a best leap just seven centimetres shy of her personal best, 6.88m, to win in Switzerland and claim the overall Diamond League prize.
The 24-year-old was a clear winner over world silver medallist Blessing Okagbare as she leapt 6.76m for second while bronze medallist Ivana Spanovic was third with 6.73m.
And Brittney Reese, who won a third successive world title in Moscow and also took gold at the London 2012 Olympics, was all the way down in seventh with a best effort of 6.37m.
With no long jump scheduled for the Diamond League finale in Brussels next week, Proctor finished top of the pile with 17 points, three ahead of Okagbare in second.
And Proctor posted on Twitter afterwards: "Season done on a good note. Time to live a normal life for a couple weeks. Thanks guys for your amazing support all."
Elsewhere in Zurich, Adam Gemili narrowly missed out on becoming the first Briton in history to run under 10 seconds for the 100m and under 20 for the 200m.
Gemili, who clocked 19.98seconds in the 200m semi-finals at the worlds, lined up in the 100m in Switzerland but could only manage 10.06, which placed him eighth.
That was still a season’s best in a race won by multiple Olympic and world champion Usain Bolt in 9.90 but there was to be no knocking Gemili's spirit about his performance or fine season to date.
"A season's best and nearly a personal best so I'm happy. It feels great and a learning experience," said Gemili.
"I fell out of the blocks and lost about a tenth of a second or so. I tried to drive out of the blocks but stumbled and had to pick myself up.
"My drive phase was limited and in a field like this you can't do it. It is a great learning experience and I'm happy.
"It is great to come into a race like this and I now know that, if I can execute, I can do well and I will take that forward into the future."
World sprint relay bronze medallist Ashleigh Nelson and Bianca Williams both ran personal bests of 11.33 and 11.36 respectively in the pre-programme 100m in Zurich.
Nelson returned for the final event of the evening, the women's 4x100m relay, where she joined forces with world bronze medallists Dina Asher-Smith, Annabelle Lewis and Hayley Jones and finished sixth.
William Sharman, who reached the 110m hurdles final in Moscow, placed eighth, as did Nigel Levine in the 400m while Olympic bronze medallist Robbie Grabarz was ninth in the high jump.
Elsewhere Chris Tomlinson was fourth in the long jump, Michael Rimmer and Andrew Osagie sixth and seventh respectively in the 800m, Steph Twell 13th in the 5,000m and Meghan Beesley seventh in the 400m hurdles.