SoMa Retro Diner Open Until 3 am on Weekends: Mel's Drive-In

Mel's Drive-In at 801 Mission Street, San Francisco, CA 94103, sits on the corner of Fourth Street in SoMa and opens at 7 am every day. The official location page lists closing times of 11 pm from Sunday through Wednesday, midnight on Thursday, and 3 am on Friday and Saturday. It is the downtown branch of the retro diner chain that started in San Francisco in 1947.

The company's history page starts with Mel Weiss and Harold Dobbs, who opened the first Mel's drive-in in 1947 on South Van Ness Avenue with room for 110 cars. By 1954 the business was pulling in about $4 million a year, and Weiss estimated the kitchens cooked 15,000 to 20,000 hamburgers a day. In 1972 the partners sold the franchise, and that same year the original lot was chosen to play Burger City in American Graffiti.

The original building was demolished in 1976. Mel Weiss's son Steven and Donald Wagstaff revived the brand in 1985 on Lombard Street, enlisting columnist Herb Caen to spread the word, and expanded across San Francisco and Southern California from there. The family is still involved, and the history page notes that Chasen, the youngest member of the Weiss family, joined the business full time in 2017.

The Lombard Street Mel's, the oldest of the revived restaurants, was badly damaged by a kitchen fire on February 3, 2026, according to reports at the time. That puts more attention on the Fourth and Mission corner and the Geary Boulevard branch in the Richmond. This one is the downtown option, a few minutes on foot from the Powell Street cable car turnaround and the Union Square hotels.

The location also suits a downtown day. Moscone Center, the Metreon and the hotels around Yerba Buena Gardens are all within a few blocks, so the room mixes conference badges at breakfast with museum visitors at lunch and moviegoers after dark. On Friday and Saturday the kitchen keeps going until 3 am, which makes it one of the few sit-down options in SoMa after the bars close.

The fountain is the reason to come to a retro diner, and Mel's menu gives it its own section of malts, milkshakes, spiked adult shakes and deluxe sundaes. The Penguin is the house shake, a classic milkshake blended with marshmallow and chocolate syrup. Root beer and Coca-Cola floats, a Black and White sundae of marshmallow and chocolate, plus a banana split carry the soda-fountain theme, and Marge's Cherry Pie sits on the dessert list.

On the grill side, The Famous Melburger is a 1/3-pound Angus patty on a sesame seed bun with lettuce, tomato, onion, mayonnaise and pickles. The Sunset Burger goes bigger, with 1/2 pound of Angus beef, cheddar, bacon and avocado on grilled sourdough. Debbie's Chili Fries come topped with the family chili recipe, and the albacore tuna melt on rye carries the menu note My Favorite.

Mel's Thick Slice French Toast is billed as a house speciality, and the Nutella French Toast adds strawberries and bananas. The Lumber Jack is the plate for big appetites, with a half-pound ham steak, three eggs, two pancakes and grilled potatoes. The Hangover Omelette fills an omelette with Mel's chili and cheddar, which is exactly the order for 2 am on a Saturday.

Here is the honest call. Skip the salads and juice bar items, which are fine but do not need a trip to a 1950s-style diner. The kitchen is strongest on burgers, chili and griddle breakfasts, and the shakes are the part people remember. If you order one thing, make it the Penguin with a Melburger, and share the chili fries. Friday diners can also order the clam chowder, which the menu lists as Friday only and serves in a sourdough bread bowl.

There is no reservation system for regular dining on the official site, so booths go first come, first served. Weekday mornings before a convention session can be busy with Moscone crowds, and weekend brunch fills with families. The calmest stretch is mid-afternoon, between the lunch rush and dinner, and late Thursday evening before the Friday crowd arrives.

If the wait at the door looks long, put a name down and walk a lap of Yerba Buena Gardens, since tables at a burger-and-shake diner turn over faster than at a sit-down restaurant. Large groups have the best luck late in the evening on a weeknight. The company also takes private event bookings through its website, which is worth knowing for a team dinner during a conference week.

Walk half a block south to Yerba Buena Gardens, where the Martin Luther King Jr. memorial waterfall is a quiet spot after a heavy meal. SFMOMA is a short walk east on Third Street, and the Children's Creativity Carousel, a hand-carved 1906 carousel, turns on the roof of the gardens beside the Metreon. For a sweet second stop, the fountain at Mel's is hard to beat, so save dessert for here.

Powell Street station for BART and Muni Metro is about a block and a half away at Market Street, and the Central Subway stops at Yerba Buena and Moscone station on Fourth Street. After 3 am closing on weekends, rideshares pick up easily at the corner. Drivers should use one of the public garages around Fifth and Mission, since street parking downtown is scarce.

Mel's Drive-In 4th and Mission is at 801 Mission Street, San Francisco, CA 94103, in SoMa. Official hours are 7 am to 11 pm on Monday, Tuesday, Wednesday and Sunday, 7 am to midnight on Thursday, and 7 am to 3 am on Friday and Saturday. The fountain menu covers malts, milkshakes, spiked adult shakes and sundaes. Seating is first come, first served, and private events can be booked through the official website.