{"metadata":{"title":"Copper Harbor Fort Wilkins, MI Monthly Climate Normals","page_url":"https://plainclimate.com/city/copper-harbor-fort-wilkins-mi","primary_station_id":"USC00201780","source":"NOAA 1991-2020 U.S. Climate Normals","source_url":"https://www.ncei.noaa.gov/products/land-based-station/us-climate-normals","vintage":"2026-08-04","license":"CC0 1.0","license_url":"https://creativecommons.org/publicdomain/zero/1.0/","citation":"PlainClimate, \"Copper Harbor Fort Wilkins, MI Climate Normals\". https://plainclimate.com/city/copper-harbor-fort-wilkins-mi","row_count":12},"annual_summary":{"city_slug":"copper-harbor-fort-wilkins-mi","ann_tavg":40.8,"ann_tmax":48.5,"ann_tmin":33.1,"ann_prcp":33.14,"ann_snow":null,"ann_htdd":8958.6,"ann_cldd":176.4,"frost_first":"10/15","frost_last":"05/20","growing_season":148,"warmest_month":8,"coldest_month":1,"wettest_month":10,"driest_month":3,"snowiest_month":null,"comfort_score":52},"data":[{"month":"January","month_number":1,"avg_temp_f":17,"avg_high_f":22.8,"avg_low_f":11.2,"precip_in":2.24,"snow_in":null,"heating_degree_days":1487.8,"cooling_degree_days":0,"days_with_precip":null,"days_with_snow":null,"days_freezing":30.9,"days_90f_plus":0,"humidity_pct":null,"wind_speed_mph":null,"clear_sky_pct":null,"overcast_pct":null},{"month":"February","month_number":2,"avg_temp_f":17.4,"avg_high_f":24.6,"avg_low_f":10.1,"precip_in":1.89,"snow_in":null,"heating_degree_days":1334,"cooling_degree_days":0,"days_with_precip":null,"days_with_snow":null,"days_freezing":27.3,"days_90f_plus":0,"humidity_pct":null,"wind_speed_mph":null,"clear_sky_pct":null,"overcast_pct":null},{"month":"March","month_number":3,"avg_temp_f":25.6,"avg_high_f":33.8,"avg_low_f":17.4,"precip_in":1.7,"snow_in":null,"heating_degree_days":1221.4,"cooling_degree_days":0,"days_with_precip":null,"days_with_snow":null,"days_freezing":28,"days_90f_plus":0,"humidity_pct":null,"wind_speed_mph":null,"clear_sky_pct":null,"overcast_pct":null},{"month":"April","month_number":4,"avg_temp_f":36,"avg_high_f":44,"avg_low_f":28.1,"precip_in":2.68,"snow_in":null,"heating_degree_days":868.4,"cooling_degree_days":0,"days_with_precip":null,"days_with_snow":null,"days_freezing":21,"days_90f_plus":0,"humidity_pct":null,"wind_speed_mph":null,"clear_sky_pct":null,"overcast_pct":null},{"month":"May","month_number":5,"avg_temp_f":48,"avg_high_f":57.4,"avg_low_f":38.5,"precip_in":3.55,"snow_in":null,"heating_degree_days":531.2,"cooling_degree_days":2.5,"days_with_precip":null,"days_with_snow":null,"days_freezing":4.7,"days_90f_plus":0,"humidity_pct":null,"wind_speed_mph":null,"clear_sky_pct":null,"overcast_pct":null},{"month":"June","month_number":6,"avg_temp_f":56.7,"avg_high_f":67.1,"avg_low_f":46.4,"precip_in":3.07,"snow_in":null,"heating_degree_days":261.1,"cooling_degree_days":13.5,"days_with_precip":null,"days_with_snow":null,"days_freezing":0.1,"days_90f_plus":0.2,"humidity_pct":null,"wind_speed_mph":null,"clear_sky_pct":null,"overcast_pct":null},{"month":"July","month_number":7,"avg_temp_f":63.8,"avg_high_f":73.2,"avg_low_f":54.4,"precip_in":3.02,"snow_in":null,"heating_degree_days":101,"cooling_degree_days":63.7,"days_with_precip":null,"days_with_snow":null,"days_freezing":0,"days_90f_plus":0.5,"humidity_pct":null,"wind_speed_mph":null,"clear_sky_pct":null,"overcast_pct":null},{"month":"August","month_number":8,"avg_temp_f":64.9,"avg_high_f":73.4,"avg_low_f":56.3,"precip_in":2.63,"snow_in":null,"heating_degree_days":77.2,"cooling_degree_days":72.4,"days_with_precip":null,"days_with_snow":null,"days_freezing":0,"days_90f_plus":0.4,"humidity_pct":null,"wind_speed_mph":null,"clear_sky_pct":null,"overcast_pct":null},{"month":"September","month_number":9,"avg_temp_f":58.1,"avg_high_f":66,"avg_low_f":50.3,"precip_in":3.71,"snow_in":null,"heating_degree_days":229,"cooling_degree_days":23.3,"days_with_precip":null,"days_with_snow":null,"days_freezing":0.2,"days_90f_plus":0.2,"humidity_pct":null,"wind_speed_mph":null,"clear_sky_pct":null,"overcast_pct":null},{"month":"October","month_number":10,"avg_temp_f":45.4,"avg_high_f":51.9,"avg_low_f":38.9,"precip_in":3.72,"snow_in":null,"heating_degree_days":608.5,"cooling_degree_days":0.9,"days_with_precip":null,"days_with_snow":null,"days_freezing":5,"days_90f_plus":0,"humidity_pct":null,"wind_speed_mph":null,"clear_sky_pct":null,"overcast_pct":null},{"month":"November","month_number":11,"avg_temp_f":33.4,"avg_high_f":39,"avg_low_f":27.8,"precip_in":2.6,"snow_in":null,"heating_degree_days":948,"cooling_degree_days":0,"days_with_precip":null,"days_with_snow":null,"days_freezing":20.5,"days_90f_plus":0,"humidity_pct":null,"wind_speed_mph":null,"clear_sky_pct":null,"overcast_pct":null},{"month":"December","month_number":12,"avg_temp_f":23.4,"avg_high_f":28.5,"avg_low_f":18.2,"precip_in":2.33,"snow_in":null,"heating_degree_days":1291.1,"cooling_degree_days":0,"days_with_precip":null,"days_with_snow":null,"days_freezing":29.5,"days_90f_plus":0,"humidity_pct":null,"wind_speed_mph":null,"clear_sky_pct":null,"overcast_pct":null}]}