{"metadata":{"title":"Mt Rushmore Nmem, SD Monthly Climate Normals","page_url":"https://plainclimate.com/city/mt-rushmore-nmem-sd","primary_station_id":"USC00395870","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, \"Mt Rushmore Nmem, SD Climate Normals\". https://plainclimate.com/city/mt-rushmore-nmem-sd","row_count":12},"annual_summary":{"city_slug":"mt-rushmore-nmem-sd","ann_tavg":45.7,"ann_tmax":55,"ann_tmin":36.5,"ann_prcp":24.12,"ann_snow":59.3,"ann_htdd":7406.8,"ann_cldd":415,"frost_first":"10/01","frost_last":"05/15","growing_season":139,"warmest_month":7,"coldest_month":2,"wettest_month":5,"driest_month":1,"snowiest_month":4,"comfort_score":54},"data":[{"month":"January","month_number":1,"avg_temp_f":27.8,"avg_high_f":36.8,"avg_low_f":18.8,"precip_in":0.48,"snow_in":7.2,"heating_degree_days":1153.3,"cooling_degree_days":0,"days_with_precip":5.1,"days_with_snow":4.5,"days_freezing":26.5,"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":27.3,"avg_high_f":36.3,"avg_low_f":18.4,"precip_in":0.76,"snow_in":8.9,"heating_degree_days":1054,"cooling_degree_days":0,"days_with_precip":6.1,"days_with_snow":4.9,"days_freezing":24.6,"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":34.8,"avg_high_f":44.2,"avg_low_f":25.4,"precip_in":1.35,"snow_in":9.6,"heating_degree_days":936.3,"cooling_degree_days":0,"days_with_precip":6.7,"days_with_snow":3.9,"days_freezing":22.6,"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":41,"avg_high_f":50.2,"avg_low_f":31.8,"precip_in":2.62,"snow_in":13.1,"heating_degree_days":720.5,"cooling_degree_days":0.6,"days_with_precip":9.7,"days_with_snow":3.4,"days_freezing":15.6,"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":50.6,"avg_high_f":59.6,"avg_low_f":41.5,"precip_in":4.8,"snow_in":1.5,"heating_degree_days":455.2,"cooling_degree_days":7.3,"days_with_precip":13.6,"days_with_snow":0.8,"days_freezing":4.4,"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":61.5,"avg_high_f":71.1,"avg_low_f":51.9,"precip_in":3.58,"snow_in":0.2,"heating_degree_days":158,"cooling_degree_days":52.9,"days_with_precip":13.4,"days_with_snow":0.1,"days_freezing":0.2,"days_90f_plus":0.7,"humidity_pct":null,"wind_speed_mph":null,"clear_sky_pct":null,"overcast_pct":null},{"month":"July","month_number":7,"avg_temp_f":68.9,"avg_high_f":78.7,"avg_low_f":59.1,"precip_in":3.59,"snow_in":0,"heating_degree_days":38.7,"cooling_degree_days":159.5,"days_with_precip":12.4,"days_with_snow":0,"days_freezing":0,"days_90f_plus":2.9,"humidity_pct":null,"wind_speed_mph":null,"clear_sky_pct":null,"overcast_pct":null},{"month":"August","month_number":8,"avg_temp_f":67.8,"avg_high_f":77.5,"avg_low_f":58,"precip_in":2.29,"snow_in":0,"heating_degree_days":52.7,"cooling_degree_days":137.9,"days_with_precip":10.5,"days_with_snow":0,"days_freezing":0,"days_90f_plus":1.9,"humidity_pct":null,"wind_speed_mph":null,"clear_sky_pct":null,"overcast_pct":null},{"month":"September","month_number":9,"avg_temp_f":59.4,"avg_high_f":69.1,"avg_low_f":49.6,"precip_in":1.76,"snow_in":0.9,"heating_degree_days":223.2,"cooling_degree_days":53.6,"days_with_precip":7.7,"days_with_snow":0.2,"days_freezing":1.1,"days_90f_plus":0.5,"humidity_pct":null,"wind_speed_mph":null,"clear_sky_pct":null,"overcast_pct":null},{"month":"October","month_number":10,"avg_temp_f":45.9,"avg_high_f":55,"avg_low_f":36.8,"precip_in":1.8,"snow_in":4.9,"heating_degree_days":595.3,"cooling_degree_days":3.3,"days_with_precip":7.1,"days_with_snow":1.7,"days_freezing":9.7,"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":35.7,"avg_high_f":44.4,"avg_low_f":27,"precip_in":0.59,"snow_in":6.4,"heating_degree_days":879,"cooling_degree_days":0,"days_with_precip":4.5,"days_with_snow":3,"days_freezing":20.7,"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":28.2,"avg_high_f":36.6,"avg_low_f":19.8,"precip_in":0.5,"snow_in":6.6,"heating_degree_days":1140.6,"cooling_degree_days":0,"days_with_precip":4.7,"days_with_snow":4,"days_freezing":26.7,"days_90f_plus":0,"humidity_pct":null,"wind_speed_mph":null,"clear_sky_pct":null,"overcast_pct":null}]}