{"destination_name":"Big Island","destination_slug":"big-island","month_name":"October","month_num":10,"buckets":[{"half":1,"half_label":"Early October","pct_clear":0,"avg_high_f":69,"n_days":120},{"half":2,"half_label":"Late October","pct_clear":0,"avg_high_f":68,"n_days":128}],"month_pct_clear":0,"avg_high_f":68,"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/big-island/october","month_hub_url":"https://sunny.day/warm-in/october"}