{"metadata":{"title":"Summerville, SC Monthly Climate Normals","page_url":"https://plainclimate.com/city/summerville-sc","primary_station_id":"USC00388426","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, \"Summerville, SC Climate Normals\". https://plainclimate.com/city/summerville-sc","row_count":12},"annual_summary":{"city_slug":"summerville-sc","ann_tavg":63.8,"ann_tmax":75.3,"ann_tmin":52.4,"ann_prcp":52.7,"ann_snow":null,"ann_htdd":2384.9,"ann_cldd":1988.1,"frost_first":"11/12","frost_last":"03/22","growing_season":235,"warmest_month":7,"coldest_month":1,"wettest_month":7,"driest_month":11,"snowiest_month":null,"comfort_score":80},"data":[{"month":"January","month_number":1,"avg_temp_f":46.4,"avg_high_f":58.2,"avg_low_f":34.5,"precip_in":3.63,"snow_in":null,"heating_degree_days":579.1,"cooling_degree_days":1.1,"days_with_precip":null,"days_with_snow":null,"days_freezing":14.5,"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":49.4,"avg_high_f":61.9,"avg_low_f":37,"precip_in":3.27,"snow_in":null,"heating_degree_days":437.9,"cooling_degree_days":2.5,"days_with_precip":null,"days_with_snow":null,"days_freezing":9.1,"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":55.4,"avg_high_f":68.5,"avg_low_f":42.2,"precip_in":3.89,"snow_in":null,"heating_degree_days":312.7,"cooling_degree_days":13.6,"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":"April","month_number":4,"avg_temp_f":62.6,"avg_high_f":75.6,"avg_low_f":49.5,"precip_in":3.45,"snow_in":null,"heating_degree_days":127.3,"cooling_degree_days":53.8,"days_with_precip":null,"days_with_snow":null,"days_freezing":0.2,"days_90f_plus":0.4,"humidity_pct":null,"wind_speed_mph":null,"clear_sky_pct":null,"overcast_pct":null},{"month":"May","month_number":5,"avg_temp_f":70.7,"avg_high_f":82.3,"avg_low_f":59.1,"precip_in":3.52,"snow_in":null,"heating_degree_days":20.1,"cooling_degree_days":196.7,"days_with_precip":null,"days_with_snow":null,"days_freezing":0,"days_90f_plus":6.2,"humidity_pct":null,"wind_speed_mph":null,"clear_sky_pct":null,"overcast_pct":null},{"month":"June","month_number":6,"avg_temp_f":77.2,"avg_high_f":87.2,"avg_low_f":67.2,"precip_in":5.6,"snow_in":null,"heating_degree_days":1.2,"cooling_degree_days":367.2,"days_with_precip":null,"days_with_snow":null,"days_freezing":0,"days_90f_plus":15.3,"humidity_pct":null,"wind_speed_mph":null,"clear_sky_pct":null,"overcast_pct":null},{"month":"July","month_number":7,"avg_temp_f":80.5,"avg_high_f":90.1,"avg_low_f":70.9,"precip_in":6.78,"snow_in":null,"heating_degree_days":0,"cooling_degree_days":480.4,"days_with_precip":null,"days_with_snow":null,"days_freezing":0,"days_90f_plus":22.4,"humidity_pct":null,"wind_speed_mph":null,"clear_sky_pct":null,"overcast_pct":null},{"month":"August","month_number":8,"avg_temp_f":80.1,"avg_high_f":89.7,"avg_low_f":70.4,"precip_in":6.17,"snow_in":null,"heating_degree_days":0,"cooling_degree_days":466.5,"days_with_precip":null,"days_with_snow":null,"days_freezing":0,"days_90f_plus":18.7,"humidity_pct":null,"wind_speed_mph":null,"clear_sky_pct":null,"overcast_pct":null},{"month":"September","month_number":9,"avg_temp_f":74.8,"avg_high_f":84.7,"avg_low_f":64.8,"precip_in":5.88,"snow_in":null,"heating_degree_days":4.5,"cooling_degree_days":297,"days_with_precip":null,"days_with_snow":null,"days_freezing":0,"days_90f_plus":8.8,"humidity_pct":null,"wind_speed_mph":null,"clear_sky_pct":null,"overcast_pct":null},{"month":"October","month_number":10,"avg_temp_f":64.8,"avg_high_f":76.6,"avg_low_f":53,"precip_in":4.12,"snow_in":null,"heating_degree_days":96.3,"cooling_degree_days":90.1,"days_with_precip":null,"days_with_snow":null,"days_freezing":0.2,"days_90f_plus":0.5,"humidity_pct":null,"wind_speed_mph":null,"clear_sky_pct":null,"overcast_pct":null},{"month":"November","month_number":11,"avg_temp_f":54.9,"avg_high_f":67.7,"avg_low_f":42.2,"precip_in":2.97,"snow_in":null,"heating_degree_days":316.9,"cooling_degree_days":15.4,"days_with_precip":null,"days_with_snow":null,"days_freezing":5.2,"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":49.3,"avg_high_f":61.3,"avg_low_f":37.4,"precip_in":3.42,"snow_in":null,"heating_degree_days":488.9,"cooling_degree_days":3.7,"days_with_precip":null,"days_with_snow":null,"days_freezing":10.7,"days_90f_plus":0,"humidity_pct":null,"wind_speed_mph":null,"clear_sky_pct":null,"overcast_pct":null}]}