It’s been raining for days, but luckily Sunday’s forecast looks a little brighter. Celebrate that tiny bit of sun by heading outdoors, more specifically, to the 41st annual Oktoberfest in Harvard Square. You can watch the HONK! Parade, work your way through sidewalk sales and drink up at any pf the fair’s six beer gardens. Once you’ve worked up an appetite, head for The Longfellow Bar where they’re hosting the second Misíon Burrito Pop-Up. The street food-themed series is the brainchild of chef-owner Michael Scelfo, whose mission (beyond serving totally craveable burritos) is to provide job opportunities to at-risk youth and help equip them with job skills. Stop by between noon and 6:00pm to get your fill of stuffed-to-the-brim tortillas for a good cause. Find more details here.