Rain puts slight damper on May long weekend fun at popular McLean Creek Anything can happen, weather-wise, on the May-long weekend in Alberta even snow. This year, it was just rain. Social Sharing CBC News · Posted: May 25, 2021 6:44 AM MT | Last Updated: May 25 An OHV user in the McLean Creek Public Land Use Zone in Southern Alta. on May 24, 2021.(Helen Pike/CBC)