Meteorologists forecast extremely high temperatures that will reach locally up to 39-40 degrees Celsius over the upcoming weekend. The heat wave unprecedented for this time of the year and the deviation from the average seasonal temperature in mid-May is over 10 degrees Celsius, the weather service of National Observatory of Athens, meteo, said in its … The post Heat Wave in mid-May: Temperatures in Greece to soar up to 40°C appeared first on Keep Talking Greece.