{"metadata":{"title":"Britton, SD Monthly Climate Normals","page_url":"https://plainclimate.com/city/britton-sd","primary_station_id":"USC00391049","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, \"Britton, SD Climate Normals\". https://plainclimate.com/city/britton-sd","row_count":12},"annual_summary":{"city_slug":"britton-sd","ann_tavg":42.3,"ann_tmax":53.6,"ann_tmin":30.9,"ann_prcp":24.27,"ann_snow":45.4,"ann_htdd":8743.6,"ann_cldd":505.4,"frost_first":"09/26","frost_last":"05/13","growing_season":136,"warmest_month":7,"coldest_month":1,"wettest_month":7,"driest_month":2,"snowiest_month":2,"comfort_score":49},"data":[{"month":"January","month_number":1,"avg_temp_f":10.4,"avg_high_f":20.4,"avg_low_f":0.4,"precip_in":0.66,"snow_in":8.3,"heating_degree_days":1692.3,"cooling_degree_days":0,"days_with_precip":5.3,"days_with_snow":4.7,"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":15,"avg_high_f":25.3,"avg_low_f":4.7,"precip_in":0.64,"snow_in":9.8,"heating_degree_days":1399.8,"cooling_degree_days":0,"days_with_precip":5.3,"days_with_snow":4.4,"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":28.2,"avg_high_f":38.7,"avg_low_f":17.6,"precip_in":0.87,"snow_in":6.1,"heating_degree_days":1142.4,"cooling_degree_days":0,"days_with_precip":4.9,"days_with_snow":3,"days_freezing":26.4,"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":42.5,"avg_high_f":54.7,"avg_low_f":30.4,"precip_in":1.96,"snow_in":5.1,"heating_degree_days":674.5,"cooling_degree_days":0.9,"days_with_precip":7,"days_with_snow":1.5,"days_freezing":14.5,"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":55.6,"avg_high_f":68.4,"avg_low_f":42.8,"precip_in":3.04,"snow_in":0,"heating_degree_days":313.4,"cooling_degree_days":21.9,"days_with_precip":9.6,"days_with_snow":0,"days_freezing":2.5,"days_90f_plus":0.9,"humidity_pct":null,"wind_speed_mph":null,"clear_sky_pct":null,"overcast_pct":null},{"month":"June","month_number":6,"avg_temp_f":65.8,"avg_high_f":77.9,"avg_low_f":53.7,"precip_in":4.13,"snow_in":0,"heating_degree_days":74.3,"cooling_degree_days":98.2,"days_with_precip":9.9,"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":"July","month_number":7,"avg_temp_f":70.4,"avg_high_f":82.5,"avg_low_f":58.3,"precip_in":4.41,"snow_in":0,"heating_degree_days":21.6,"cooling_degree_days":188.9,"days_with_precip":9.4,"days_with_snow":0,"days_freezing":0,"days_90f_plus":6.6,"humidity_pct":null,"wind_speed_mph":null,"clear_sky_pct":null,"overcast_pct":null},{"month":"August","month_number":8,"avg_temp_f":68.5,"avg_high_f":81,"avg_low_f":56.1,"precip_in":2.5,"snow_in":0,"heating_degree_days":36.1,"cooling_degree_days":146,"days_with_precip":7.6,"days_with_snow":0,"days_freezing":0,"days_90f_plus":4.2,"humidity_pct":null,"wind_speed_mph":null,"clear_sky_pct":null,"overcast_pct":null},{"month":"September","month_number":9,"avg_temp_f":59.8,"avg_high_f":72.7,"avg_low_f":47,"precip_in":2.56,"snow_in":0,"heating_degree_days":201,"cooling_degree_days":46.3,"days_with_precip":6.8,"days_with_snow":0,"days_freezing":0.9,"days_90f_plus":1.6,"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":57.3,"avg_low_f":33.6,"precip_in":2.15,"snow_in":1.2,"heating_degree_days":609.3,"cooling_degree_days":3.2,"days_with_precip":6.7,"days_with_snow":0.6,"days_freezing":11.3,"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":29.3,"avg_high_f":39.3,"avg_low_f":19.3,"precip_in":0.69,"snow_in":5.1,"heating_degree_days":1071,"cooling_degree_days":0,"days_with_precip":4.7,"days_with_snow":2.3,"days_freezing":25.3,"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":16.3,"avg_high_f":25.6,"avg_low_f":7.1,"precip_in":0.66,"snow_in":9.8,"heating_degree_days":1508,"cooling_degree_days":0,"days_with_precip":5.1,"days_with_snow":4.7,"days_freezing":30.8,"days_90f_plus":0,"humidity_pct":null,"wind_speed_mph":null,"clear_sky_pct":null,"overcast_pct":null}]}