Fallon, 33, and Juvonen, 40, had "family and close friends in attendance" at the ceremony, according to the statement from representative Ina Treciokas, the Associated Press reports. No further details were released.
The proposal took place in New Hampshire last August "on the dock at sunset at the Junoven family home in Wolfeboro on Lake Winnipesaukee, where On Golden Pond was filmed," a friend of the couple's told PEOPLE at the time.
"He presented her with a one-of-a-kind ring designed by Neil Lane," the friend added.
It is a first marriage for both.
Fallon: 'Coolest Girl in World'The bride has been a close friend and producing partner of Drew Barrymore's for more than a decade. This summer, Barrymore threw Juvonen a 40th birthday party, where guests included Eva Mendes, Kathy Griffin, Courtney Love, Jason Bateman and Fred Savage.
Movies that Juvonen has produced include 50 First Dates, Music and Lyrics, Charlie's Angels and the upcoming He's Just Not That Into You.
Fallon is being talked up as a possible Late Night successor to Conan O'Brien (who takes over NBC's Tonight franchise in 2009). He left SNL in 2004, in 2004, but the following year he and Tina Fey staged an on-air reunion – and a mock custody battle over their supposed love child.
In October, Fallon was at no loss for words when it came to describing his then-bride-to-be, telling PEOPLE: "She's the coolest girl in the world."