Southlake, Texas Civic Calendar — 2026

Commemorates the 1836 Texas Declaration of Independence. Observed statewide.

Federal income tax returns due. Extensions filable via Form 4868.

Marks the 1836 Battle of San Jacinto that secured Texas independence. A Texas state holiday.

A three-day juried fine art festival produced by the Southlake Women's Club, featuring artists from across the country, two entertainment stages, a bistro food walk, and family activities, typically held the last weekend of April. Held at Southlake Town Square.

Atlantic hurricane season runs June 1 – November 30. Local emergency-management offices issue regular updates during active storms.

Southlake's annual Independence Day celebration held each July 3 in Town Square, featuring live music, food vendors, family activities, and a fireworks show at 9:30 p.m. Held at Southlake Town Square.

Most Texas school districts begin the academic year in mid-to-late August.

A free three-day Bavarian-themed festival hosted by the Southlake Chamber of Commerce each October in Town Square, drawing over 100,000 visitors for live music, food, wiener dog races, carnival rides, and contests. Held at Southlake Town Square.

General election day in even-numbered years.

Southlake's annual holiday kickoff held the Saturday before Thanksgiving, featuring a giant Christmas tree lighting, performances by local school groups, photos with Santa, a snow hill, and a fireworks show. Held at Southlake Town Square.