Summer is back! Meteorologists forecast a mini heat wave in the middle of September with temperatures to reach 37 to 40 degrees Celsius. Temperature will gradually rise on Saturday, the first ‘summer day’ of this extraordinary September will be on Sunday. The mini heat wave will reach its peak on Monday, Sept 18 2017, and … The post Mini Heat Wave in the middle of September with 37°- 40° Celsius appeared first on Keep Talking Greece.