{"destination_name":"Mackinac Island","destination_slug":"mackinac-island","month_name":"June","month_num":6,"buckets":[{"half":1,"half_label":"Early June","pct_clear":0,"avg_high_f":55,"n_days":120},{"half":2,"half_label":"Late June","pct_clear":0,"avg_high_f":61,"n_days":120}],"month_pct_clear":0,"avg_high_f":58,"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/mackinac-island/june","month_hub_url":"https://sunny.day/warm-in/june"}