Created by Joseph Fink and Jeffrey Cranor, Welcome to Night Vale is the twice-monthly podcast that presents itself as a news-radio show for a fictional town where all conspiracy theories are true. In style and content, the show blends Garrison Keillor’s Lake Wobegon with David Lynch’s Twin Peaks, and the results are deeply weird and beguiling. Tonight, Night Vale comes to life onstage, where our hosts will be joined by special guest Jason Webley, who will provide Night Vale’s beloved musical weather reports. (Neptune Theatre, 1303 NE 45th St,, 8 and 10 pm, $26.50)