Despite being technically a glen (the area is in the valley between Cave Hill and Carnmoney Hill), Glengormley sits at 700 feet above sea level, and has a climate noticeably colder than the adjacent Lagan valley area. The cold and windy weather may be explained by the 'tunnel' of natural features running from the Antrim coast to the edge of Glengormley on the Hightown Road. The 'tunnel' can be seen from the Cavehill Country Park entrance at Hightown Road, looking north towards Slemish.