{"metadata":{"title":"Norfolk, CT Monthly Climate Normals","page_url":"https://plainclimate.com/city/norfolk-ct","primary_station_id":"USC00065445","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, \"Norfolk, CT Climate Normals\". https://plainclimate.com/city/norfolk-ct","row_count":12},"annual_summary":{"city_slug":"norfolk-ct","ann_tavg":45.9,"ann_tmax":54.6,"ann_tmin":37.1,"ann_prcp":52.94,"ann_snow":74.9,"ann_htdd":7311,"ann_cldd":369.9,"frost_first":"10/11","frost_last":"05/03","growing_season":161,"warmest_month":7,"coldest_month":1,"wettest_month":10,"driest_month":2,"snowiest_month":1,"comfort_score":44},"data":[{"month":"January","month_number":1,"avg_temp_f":21.9,"avg_high_f":29.8,"avg_low_f":14.1,"precip_in":3.97,"snow_in":17.8,"heating_degree_days":1334.4,"cooling_degree_days":0,"days_with_precip":13.1,"days_with_snow":9.5,"days_freezing":29.3,"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":23.9,"avg_high_f":32.3,"avg_low_f":15.4,"precip_in":3.33,"snow_in":17.5,"heating_degree_days":1152.1,"cooling_degree_days":0,"days_with_precip":11.6,"days_with_snow":8.8,"days_freezing":27,"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":31.6,"avg_high_f":40.4,"avg_low_f":22.8,"precip_in":4.21,"snow_in":14.9,"heating_degree_days":1035.4,"cooling_degree_days":0.1,"days_with_precip":12.4,"days_with_snow":6.8,"days_freezing":26.3,"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,"avg_high_f":54,"avg_low_f":34,"precip_in":3.93,"snow_in":3.9,"heating_degree_days":632.6,"cooling_degree_days":2.6,"days_with_precip":12.7,"days_with_snow":2.2,"days_freezing":13.7,"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":55.3,"avg_high_f":65.3,"avg_low_f":45.4,"precip_in":4.13,"snow_in":0,"heating_degree_days":315.4,"cooling_degree_days":16.2,"days_with_precip":14.1,"days_with_snow":0.1,"days_freezing":1.2,"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":64,"avg_high_f":73.4,"avg_low_f":54.5,"precip_in":4.96,"snow_in":0,"heating_degree_days":97.7,"cooling_degree_days":66.1,"days_with_precip":13,"days_with_snow":0,"days_freezing":0,"days_90f_plus":0.1,"humidity_pct":null,"wind_speed_mph":null,"clear_sky_pct":null,"overcast_pct":null},{"month":"July","month_number":7,"avg_temp_f":69,"avg_high_f":78.4,"avg_low_f":59.5,"precip_in":4.77,"snow_in":0,"heating_degree_days":20.3,"cooling_degree_days":142.6,"days_with_precip":11.8,"days_with_snow":0,"days_freezing":0,"days_90f_plus":1,"humidity_pct":null,"wind_speed_mph":null,"clear_sky_pct":null,"overcast_pct":null},{"month":"August","month_number":8,"avg_temp_f":67.3,"avg_high_f":76.4,"avg_low_f":58.1,"precip_in":4.67,"snow_in":0,"heating_degree_days":37.9,"cooling_degree_days":107.5,"days_with_precip":11.4,"days_with_snow":0,"days_freezing":0,"days_90f_plus":0.3,"humidity_pct":null,"wind_speed_mph":null,"clear_sky_pct":null,"overcast_pct":null},{"month":"September","month_number":9,"avg_temp_f":60,"avg_high_f":69,"avg_low_f":50.9,"precip_in":4.9,"snow_in":0,"heating_degree_days":184.7,"cooling_degree_days":33.1,"days_with_precip":10.4,"days_with_snow":0,"days_freezing":0.2,"days_90f_plus":0,"humidity_pct":null,"wind_speed_mph":null,"clear_sky_pct":null,"overcast_pct":null},{"month":"October","month_number":10,"avg_temp_f":48.1,"avg_high_f":56.5,"avg_low_f":39.7,"precip_in":5.14,"snow_in":1.4,"heating_degree_days":525.5,"cooling_degree_days":1.6,"days_with_precip":12.2,"days_with_snow":0.3,"days_freezing":6.6,"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":37.5,"avg_high_f":44.9,"avg_low_f":30.2,"precip_in":4.07,"snow_in":4.4,"heating_degree_days":823.5,"cooling_degree_days":0,"days_with_precip":11.4,"days_with_snow":2.8,"days_freezing":19.3,"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":27.9,"avg_high_f":34.6,"avg_low_f":21.1,"precip_in":4.86,"snow_in":15,"heating_degree_days":1151.6,"cooling_degree_days":0,"days_with_precip":13.8,"days_with_snow":7.7,"days_freezing":27.8,"days_90f_plus":0,"humidity_pct":null,"wind_speed_mph":null,"clear_sky_pct":null,"overcast_pct":null}]}