Depending on how far you want to travel, gig at the goil (lochgoilhead) is a wee festival this w/e
Think the Nova Scotia Folk Club is in Fort Theatre Bishopbriggs on Wednesdays
Facebook site Scottish Music Scene is worth checking
Thrre are lots of local festivals coming up in wee communities which often include folk music...maybe need to check scottish tourist board or county websites eg Argyll and Bute or Stirlingshirewhats on sites.