{"destination_name":"Mazatlán","destination_slug":"mazatlan","month_name":"December","month_num":12,"buckets":[{"half":1,"half_label":"Early December","pct_clear":91,"avg_high_f":80,"n_days":120},{"half":2,"half_label":"Late December","pct_clear":95,"avg_high_f":78,"n_days":128}],"month_pct_clear":93,"avg_high_f":79,"total_n":248,"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/mazatlan/december","month_hub_url":"https://sunny.day/warm-in/december"}