Overview: Stara ZagoraStara Zagora (Bulgaria) in general has a mild continental climate. Temperatures during the day are in the range from 4 °C (40 °F) in January to 29 °C (85 °F) in July. The driest month is September with just 5 days of rain, on the contrary, the month when it rains the most is May with 10 days of rain. Temperatures during the night go from -2 °C (28 °F) in January to 17 °C (62 °F) in July.