In 2004, the Mets had a 71-91 won-lost record. The team finished fourth in the National League Eastern Division. The season was Art Howe's second and final one as Mets manager.
The Mets' season got off to a slow start. They won nine games and lost 14 in April. The team began the year with a 3-3 record at Atlanta and San Juan, Puerto Rico (vs. Expos) from April 6 to April 11. At Shea Stadium on April 12, they chalked up a 10-6 victory over the Braves. The Mets dropped six of nine games at Shea between April 14 and April 22. They followed with three straight losses at Chicago before winning two of three at Los Angeles. On April 30, the Mets ended the month with a 7-6 defeat at San Diego. The team was six games in back of the first-place Marlins.
The Mets had a winning month of May. The team posted a 15-12 record for a .556 percentage. Between May 2 and May 9, the Mets won five of seven games. They split four games with the Diamondbacks at Arizona and won two of three in an ensuing series at Houston. The team went 5-3 at Shea from May 18 to May 26 before getting swept in a three-game series at Florida. On May 31, the Mets closed out the month with a Memorial Day 5-3 victory at Philadelphia. They stood fourth in the N. L. East, five and one-half games behind the division-leading Marlins.
In June, the Mets broke even. They had 13 wins and 13 defeats during the month. The team started June with 4-1 and 5-3 wins at Philadelphia and a 4-1 victory over the Marlins on June 3 at Shea. At Kansas City on June 13, the Mets stopped a five-game losing streak with a 5-2 win over the Royals. They won five of six in interleague series against the Indians and Tigers at Shea between June 15 and June 20. The Mets recorded a 9-3 triumph over the Yankees on June 26. At the end of the month, the team was in third place in the East and trailing the co-leading Marlins and Phillies by three games.
The Mets fell back in July. For the month, the team had only 12 wins in its 27 games played. They began July with a 7-6 win at Cincinnati and followed up by sweeping the Yankees in a three-game series at Shea. On an ensuing road trip to Philadelphia and Florida, the Mets had a 3-4 record. The team dropped seven of ten game on a home stand from July 15 to July 25. They split four games at Montreal between July 26 and July 29. After a pair of defeats at Atlanta to end the month, the Mets found themselves fourth in the division and eight games behind the front-running Braves.
August was another difficult month for the Mets. They had a record of 11-17 for a .393 percentage. The team swept a three-game series at Milwaukee from August 3 to August 5. After getting swept three straight at St. Louis, the Mets won four of six games against the Astros and Diamondbacks at Shea. The team swept a doubleheader with 10-3 and 4-2 triumphs at Colorado on August 19. At San Francisco two days later, they recorded an 11-9 victory over the Giants in 12 innings. The Mets snapped a five-game skid with a 9-2 win over the Dodgers on August 27 at Shea. At the end of the month, the team was 17 games behind the first-place Braves.
The Mets had 11 wins and 20 losses over the final five weeks of the season. At Florida on September 9, they ended a losing streak of eleven games with a 4-0 win over the Marlins. The Mets went 3-5 against the Phillies and Braves at Shea from September 10 to September 16. In their final game ever in Montreal on September 23, they came away with a 4-2 win over the Expos. The Mets won two of three against the Cubs at Shea before losing two of three at Atlanta to end September. At Shea on October 3, the team closed the season with an 8-1 victory over the Washington-bound Montreal Expos.