Highlights
•  We found that 60.0% of confirmed COVID-19 cases occurred in places where the air temperature ranged from 5°C to 15°C.
•  Our results indicate that SARS-CoV-2 appears to be spreading toward higher latitudes.
•  The COVID-19 pandemic may spread cyclically and outbreaks may recur in large cities in the mid-latitudes in autumn 2020.