{"metadata":{"title":"Plainfield, NJ Monthly Climate Normals","page_url":"https://plainclimate.com/city/plainfield-nj","primary_station_id":"USC00287079","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, \"Plainfield, NJ Climate Normals\". https://plainclimate.com/city/plainfield-nj","row_count":12},"annual_summary":{"city_slug":"plainfield-nj","ann_tavg":54.9,"ann_tmax":65.3,"ann_tmin":44.4,"ann_prcp":48.72,"ann_snow":21.4,"ann_htdd":4817.4,"ann_cldd":1156.6,"frost_first":"10/28","frost_last":"04/11","growing_season":200,"warmest_month":7,"coldest_month":1,"wettest_month":7,"driest_month":2,"snowiest_month":2,"comfort_score":63},"data":[{"month":"January","month_number":1,"avg_temp_f":32.2,"avg_high_f":40.7,"avg_low_f":23.8,"precip_in":3.79,"snow_in":5.1,"heating_degree_days":1015,"cooling_degree_days":0,"days_with_precip":10.1,"days_with_snow":2,"days_freezing":25.2,"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":34.9,"avg_high_f":44.2,"avg_low_f":25.7,"precip_in":3.14,"snow_in":8.3,"heating_degree_days":841.3,"cooling_degree_days":0,"days_with_precip":8.4,"days_with_snow":2,"days_freezing":22.1,"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":42.5,"avg_high_f":52.9,"avg_low_f":32.1,"precip_in":4.27,"snow_in":5.3,"heating_degree_days":698.7,"cooling_degree_days":1.3,"days_with_precip":10.1,"days_with_snow":1.7,"days_freezing":16.4,"days_90f_plus":0.1,"humidity_pct":null,"wind_speed_mph":null,"clear_sky_pct":null,"overcast_pct":null},{"month":"April","month_number":4,"avg_temp_f":53.7,"avg_high_f":65.7,"avg_low_f":41.7,"precip_in":3.6,"snow_in":0.1,"heating_degree_days":352.8,"cooling_degree_days":13.7,"days_with_precip":11.2,"days_with_snow":0.1,"days_freezing":3.6,"days_90f_plus":0.2,"humidity_pct":null,"wind_speed_mph":null,"clear_sky_pct":null,"overcast_pct":null},{"month":"May","month_number":5,"avg_temp_f":63.1,"avg_high_f":74.9,"avg_low_f":51.3,"precip_in":4.01,"snow_in":0,"heating_degree_days":126.8,"cooling_degree_days":67.9,"days_with_precip":10.7,"days_with_snow":0,"days_freezing":0.2,"days_90f_plus":1.9,"humidity_pct":null,"wind_speed_mph":null,"clear_sky_pct":null,"overcast_pct":null},{"month":"June","month_number":6,"avg_temp_f":72,"avg_high_f":83.7,"avg_low_f":60.3,"precip_in":4.33,"snow_in":0,"heating_degree_days":16.2,"cooling_degree_days":226.1,"days_with_precip":10.6,"days_with_snow":0,"days_freezing":0,"days_90f_plus":6.1,"humidity_pct":null,"wind_speed_mph":null,"clear_sky_pct":null,"overcast_pct":null},{"month":"July","month_number":7,"avg_temp_f":77.1,"avg_high_f":88.1,"avg_low_f":66,"precip_in":5.34,"snow_in":0,"heating_degree_days":0.5,"cooling_degree_days":373.9,"days_with_precip":10,"days_with_snow":0,"days_freezing":0,"days_90f_plus":11.4,"humidity_pct":null,"wind_speed_mph":null,"clear_sky_pct":null,"overcast_pct":null},{"month":"August","month_number":8,"avg_temp_f":75,"avg_high_f":86,"avg_low_f":64,"precip_in":3.99,"snow_in":0,"heating_degree_days":1.3,"cooling_degree_days":311.3,"days_with_precip":9.5,"days_with_snow":0,"days_freezing":0,"days_90f_plus":8.1,"humidity_pct":null,"wind_speed_mph":null,"clear_sky_pct":null,"overcast_pct":null},{"month":"September","month_number":9,"avg_temp_f":68.4,"avg_high_f":79.4,"avg_low_f":57.5,"precip_in":4.27,"snow_in":0,"heating_degree_days":43.1,"cooling_degree_days":146.4,"days_with_precip":8.7,"days_with_snow":0,"days_freezing":0,"days_90f_plus":1.3,"humidity_pct":null,"wind_speed_mph":null,"clear_sky_pct":null,"overcast_pct":null},{"month":"October","month_number":10,"avg_temp_f":56,"avg_high_f":66.3,"avg_low_f":45.7,"precip_in":4.31,"snow_in":0,"heating_degree_days":294.5,"cooling_degree_days":15.6,"days_with_precip":8.6,"days_with_snow":0,"days_freezing":1.9,"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":45.8,"avg_high_f":55.7,"avg_low_f":35.9,"precip_in":3.48,"snow_in":0.2,"heating_degree_days":576.4,"cooling_degree_days":0.4,"days_with_precip":9.4,"days_with_snow":0.1,"days_freezing":11.5,"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":37.5,"avg_high_f":45.7,"avg_low_f":29.4,"precip_in":4.19,"snow_in":2.4,"heating_degree_days":850.9,"cooling_degree_days":0,"days_with_precip":10.1,"days_with_snow":1,"days_freezing":22.1,"days_90f_plus":0,"humidity_pct":null,"wind_speed_mph":null,"clear_sky_pct":null,"overcast_pct":null}]}