{"destination_name":"Charlotte","destination_slug":"charlotte","month_name":"September","month_num":9,"buckets":[{"half":1,"half_label":"Early September","pct_clear":47,"avg_high_f":85,"n_days":120},{"half":2,"half_label":"Late September","pct_clear":41,"avg_high_f":80,"n_days":120}],"month_pct_clear":44,"avg_high_f":82,"total_n":240,"source":"Open-Meteo ERA5 archive-api, 8 full years (2018–2025), daily temperature_2m_max / precipitation_sum / weathercode","temporal_coverage":"2018/2025","note":"Historical averages only. Not a forecast.","page_url":"https://sunny.day/charlotte/september","month_hub_url":"https://sunny.day/warm-in/september"}