{"metadata":{"title":"Madison, SD Monthly Climate Normals","page_url":"https://plainclimate.com/city/madison-sd","primary_station_id":"USC00395090","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, \"Madison, SD Climate Normals\". https://plainclimate.com/city/madison-sd","row_count":12},"annual_summary":{"city_slug":"madison-sd","ann_tavg":44.7,"ann_tmax":55.2,"ann_tmin":34.2,"ann_prcp":26.37,"ann_snow":36.8,"ann_htdd":7997.8,"ann_cldd":630.7,"frost_first":"09/30","frost_last":"05/05","growing_season":148,"warmest_month":7,"coldest_month":1,"wettest_month":6,"driest_month":1,"snowiest_month":2,"comfort_score":49},"data":[{"month":"January","month_number":1,"avg_temp_f":14.4,"avg_high_f":23.7,"avg_low_f":5,"precip_in":0.46,"snow_in":5.6,"heating_degree_days":1569.9,"cooling_degree_days":0,"days_with_precip":4.5,"days_with_snow":3.5,"days_freezing":31,"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":19,"avg_high_f":28.5,"avg_low_f":9.5,"precip_in":0.66,"snow_in":8.4,"heating_degree_days":1287.9,"cooling_degree_days":0,"days_with_precip":5.4,"days_with_snow":4.3,"days_freezing":27.5,"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":31.4,"avg_high_f":41.2,"avg_low_f":21.5,"precip_in":1.03,"snow_in":5,"heating_degree_days":1043.6,"cooling_degree_days":0.4,"days_with_precip":5.4,"days_with_snow":2.3,"days_freezing":25.8,"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":44.5,"avg_high_f":55.6,"avg_low_f":33.4,"precip_in":2.7,"snow_in":4.2,"heating_degree_days":617.3,"cooling_degree_days":2.3,"days_with_precip":9.1,"days_with_snow":1.3,"days_freezing":14.2,"days_90f_plus":0.1,"humidity_pct":null,"wind_speed_mph":null,"clear_sky_pct":null,"overcast_pct":null},{"month":"May","month_number":5,"avg_temp_f":57,"avg_high_f":68.1,"avg_low_f":45.9,"precip_in":3.74,"snow_in":0.1,"heating_degree_days":278.9,"cooling_degree_days":30.8,"days_with_precip":11.5,"days_with_snow":0,"days_freezing":1.7,"days_90f_plus":0.6,"humidity_pct":null,"wind_speed_mph":null,"clear_sky_pct":null,"overcast_pct":null},{"month":"June","month_number":6,"avg_temp_f":67.4,"avg_high_f":78.2,"avg_low_f":56.6,"precip_in":4.24,"snow_in":0,"heating_degree_days":58.4,"cooling_degree_days":130.3,"days_with_precip":11.4,"days_with_snow":0,"days_freezing":0,"days_90f_plus":2.2,"humidity_pct":null,"wind_speed_mph":null,"clear_sky_pct":null,"overcast_pct":null},{"month":"July","month_number":7,"avg_temp_f":72.1,"avg_high_f":83.3,"avg_low_f":60.9,"precip_in":3.33,"snow_in":0,"heating_degree_days":12.7,"cooling_degree_days":232.6,"days_with_precip":8.8,"days_with_snow":0,"days_freezing":0,"days_90f_plus":5.1,"humidity_pct":null,"wind_speed_mph":null,"clear_sky_pct":null,"overcast_pct":null},{"month":"August","month_number":8,"avg_temp_f":69.7,"avg_high_f":80.9,"avg_low_f":58.4,"precip_in":3.38,"snow_in":0,"heating_degree_days":25.8,"cooling_degree_days":169.9,"days_with_precip":7.9,"days_with_snow":0,"days_freezing":0,"days_90f_plus":3.2,"humidity_pct":null,"wind_speed_mph":null,"clear_sky_pct":null,"overcast_pct":null},{"month":"September","month_number":9,"avg_temp_f":61.4,"avg_high_f":73.1,"avg_low_f":49.6,"precip_in":3.21,"snow_in":0,"heating_degree_days":170,"cooling_degree_days":60.4,"days_with_precip":7.4,"days_with_snow":0,"days_freezing":1.3,"days_90f_plus":1,"humidity_pct":null,"wind_speed_mph":null,"clear_sky_pct":null,"overcast_pct":null},{"month":"October","month_number":10,"avg_temp_f":47.2,"avg_high_f":58.7,"avg_low_f":35.7,"precip_in":2.16,"snow_in":0.8,"heating_degree_days":555.7,"cooling_degree_days":3.9,"days_with_precip":6.6,"days_with_snow":0.6,"days_freezing":12,"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":32.4,"avg_high_f":42.2,"avg_low_f":22.6,"precip_in":0.85,"snow_in":4.9,"heating_degree_days":978,"cooling_degree_days":0,"days_with_precip":4.3,"days_with_snow":1.8,"days_freezing":25.5,"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":19.9,"avg_high_f":28.7,"avg_low_f":11,"precip_in":0.61,"snow_in":7.8,"heating_degree_days":1399.5,"cooling_degree_days":0,"days_with_precip":4.7,"days_with_snow":3.6,"days_freezing":30.7,"days_90f_plus":0,"humidity_pct":null,"wind_speed_mph":null,"clear_sky_pct":null,"overcast_pct":null}]}