(Charlie Day by Warner Bros. Entertainment)

Sometimes, even wizards need help making plans for the summer. In today’s Weekend section, we pick out the best events ahead in July, August and September. Dispatch the dog days and press on toward autumn with Civil War reenactments, top-flight tennis, county fairs, compelling theater and college (if not professional) football. But first up: “Harry Potter”! Here’s the rest of what’s inside Weekend:

• “Oklahoma!” returns to Arena Stage, the Dalai Lama is in town and the band Animal Collective finally takes the stage at Merriweather Post Pavilion, the venue name-dropped as the title of the band’s 2009 masterpiece of an album. Those items are among our picks for the weekend.

A man of few, well-chosen words, Bill Callahan performs Wednesday at the Rock & Roll Hotel.

• Quick spins of new recordings by Kasey Chambers (Saturday at the Birchmere); Tony Martucci (Monday at Blues Alley); Urge Overkill (Thursday at the Rock & Roll Hotel); Thomas Dybdahl (Thursday at DC9); and Tommy Castro (Thursday at the State Theatre).

• Thinking about hitting a DJ-fueled pool party this weekend? From cocktails to cover charges, here’s how the summer’s new arrivals stack up.

• See South American restaurant and club Lima in a whole new light when you go for lunch.

• At 876 feet high, the New River Gorge Bridge in West Virginia is an engineering marvel. Pedestrians can cross it on a 2-foot wide catwalk beneath the roadway.

• Must-see shows at the 2011 Capital Fringe Festival.

• And speaking of Fringe, what’s the bar like?

New at the movies this weekend: “Horrible Bosses,” “Zookeeper” and “Cameraman: The Life and Work of Jack Cardiff.”