Evans' broadcasting career began at the age of 13 in his hometown of Meridian, Mississippi on WDAL Radio and WTOK-TV. He attended Mississippi State University, where he studied business administration, and Jackson State University, where he studied meteorology. In 1985 the National Weather Service named him "Outstanding Meteorologist" for his forecasting and reporting during Hurricane Elena.

Before coming to New York, Evans was meteorologist for WALA-TV in Mobile, Alabama and was morning show host on WABB-FM. He also held similar jobs in Dallas, as both meteorologist at WFAA-TV and morning show host for KHYI-FM.He also reported the weather for many years for 95.5, WPLJ-FM in New York.

Evans is the Senior Meteorologist for Eyewitness News in the Morning and Eyewitness News at noon.

Evans is an 8-time Emmy award winner for "Outstanding On-Camera Achievement in Weather Broadcasting." He has been with WABC-TV since December 12, 1989.

For years Bill Evans tells the forecast to WPLJ. In February, 2009 he stopped telling the weather on WPLJ. He's been a Meteorologist for Eyewitness News in the Morning for many years. Then on May 4, 2009 Bill Evans returned to WPLJ for more weather on WPLJ.

He does live weather broadcasts on-location all over the Tri-State area, Florida, and the Caribbean, and has presented the weather report while:

• playing basketball with Patrick Ewing of the New York Knicks,
• skating with Olympic Gold Medalist Kristi Yamaguchi,
• playing golf with Tiger Woods
• swimming with dolphins,
• underwater with sharks, seals, sea lions, and beluga whales,
• sky diving,
• race car driving,
• bungie jumping,
• water skiing on the Hudson and East Rivers,and
• making fun of friend Joe Nolan of Metro Traffic.

Every year he plays himself in The Christmas Spectacular at Radio City Music Hall. Evans has also played Lumiere (the candlestick) on Broadway in Disney's Beauty and the Beast. He has appeared on ABC's Good Morning Americaand Live with Regis and Kelly.

Bill Evans is on record as supporting global warming denialism, having written a congratulatory letter to The Nation magazine in response to two Alexander Cockburn columns (running 2007-05-14 and 2007-05-28) defending various denialist positions, mostly based on unpublished papers.

Evans helps raise funds for children's charities including Babies Hospital at Columbia Presbyterian, Pathways, The Little Shelter for Rescued Animals, Special Olympics, The Orbis Society, The Crohn's and Colitis Foundation, Leake and Watts Youth Services, The Juvenile Diabetes Association, Junior Achievement, and YAI The National Young Adult Institute, Adpot-a-Dog, Bruce Museum, Greenwich Hospital, The Christopher Reeve Foundation, The Alan T. Brown Foundation, Cancer Care of Connecticut, Dana's Kids Foundation, The Blue Shield of Greenwich, CT, Red Cross of Connecticut, Red Cross of New York. He coaches youth football, baseball, and basketball. He also hosts golf tournaments to raise funds for The Red Cross of New Jersey and Special Olympics of New York.

Evans lives with his wife, Dana, and their four children (Maggie, William, and twins Julia and Sarah) in Greenwich, Connecticut.In July 2007, the novel "Category 7", which Evans co-wrote with Marianna Jameson, was released. The book is a techno-thriller that talks about weather manipulation and a hurricane that hits New York City. The book reached #12 on Amazon.com's "Best Seller" List. It also hit #21 on the New York Times Bestseller List. Their next novel, "Frozen Fire", hit book store shelves in June 2009. The next in the series, "Dry Ice" is supposed to come out July,2010. He is currently working with Susan Berkoff on a book about extreme weather for middle school students.