Not heading to Cape Cod? Don't have any invitations to the Vineyard or Nantucket? Friends aren't showing any love and inviting you down to Newport, RI? No worries - its actually going to be a bit cool (low 80s / high 70s) so hang out in Boston where there is plenty to see and do.
This weekend the North End will be flooded with tourists checking out the annual Fisherman's Feast. This year happens to be the 100th anniversary of the feast which includes the procession of the Madonna through the streets of the North End. Details about the feast and its origins which trace back to the 16th century in Sicily can be found in the link I included.
If you want something more low-key tonight you can picnic by the Hatch Shell and watch the WBZ Free Friday's Flick which starts at 6:30pm. Tonight's movie is ET. However, if getting down to the Esplanade that early is not going to work or you'd rather skip ET, you can go to the Boston Harbor Hotel at 8:00pm to see their Movies by Moonlight series. Tonight they will be showing, Tootsie.
And although I've already mentioned this, Shakespeare on the Common continues, with performances starting at 8pm near the bandstand on the Boston Common. Performances conclude this Sunday, August 15th.