July 15, 2009 > Hayward summer street parties Hayward summer street parties Held on the third Thursday of each month from June through September, Hayward Street Parties attract 4,000 to 6,000 people each summer. Celebrating its 10th year, these events, organized by the Hayward Chamber of Commerce and City of Hayward, are a local tradition with fun and free entertainment for the entire family. Don't miss out on this fun-filled way to enjoy summertime! Hayward Summer Street Parties July 16, August 20, and September 17 5:30 p.m. - 8:30 p.m. Downtown B Street and Main Street, Hayward (510) 537-2424