{"metadata":{"title":"Durham, NH Monthly Climate Normals","page_url":"https://plainclimate.com/city/durham-nh","primary_station_id":"USW00054794","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, \"Durham, NH Climate Normals\". https://plainclimate.com/city/durham-nh","row_count":12},"annual_summary":{"city_slug":"durham-nh","ann_tavg":47.1,"ann_tmax":57.1,"ann_tmin":37,"ann_prcp":47.83,"ann_snow":null,"ann_htdd":6919.7,"ann_cldd":410.7,"frost_first":"10/10","frost_last":"05/03","growing_season":160,"warmest_month":7,"coldest_month":1,"wettest_month":10,"driest_month":1,"snowiest_month":null,"comfort_score":64},"data":[{"month":"January","month_number":1,"avg_temp_f":23.6,"avg_high_f":32.4,"avg_low_f":14.8,"precip_in":3.38,"snow_in":null,"heating_degree_days":1283.2,"cooling_degree_days":0,"days_with_precip":10.9,"days_with_snow":null,"days_freezing":29.9,"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":25.9,"avg_high_f":35.5,"avg_low_f":16.4,"precip_in":3.52,"snow_in":null,"heating_degree_days":1093.4,"cooling_degree_days":0,"days_with_precip":11.3,"days_with_snow":null,"days_freezing":26.9,"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":33.8,"avg_high_f":43.2,"avg_low_f":24.5,"precip_in":4.39,"snow_in":null,"heating_degree_days":965.7,"cooling_degree_days":0.1,"days_with_precip":12,"days_with_snow":null,"days_freezing":25.4,"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":44.6,"avg_high_f":55.4,"avg_low_f":33.8,"precip_in":4.2,"snow_in":null,"heating_degree_days":613.2,"cooling_degree_days":1.2,"days_with_precip":12.9,"days_with_snow":null,"days_freezing":13.1,"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,"avg_high_f":65.9,"avg_low_f":44.1,"precip_in":3.8,"snow_in":null,"heating_degree_days":322.2,"cooling_degree_days":12.2,"days_with_precip":13,"days_with_snow":null,"days_freezing":1.2,"days_90f_plus":0.3,"humidity_pct":null,"wind_speed_mph":null,"clear_sky_pct":null,"overcast_pct":null},{"month":"June","month_number":6,"avg_temp_f":64.1,"avg_high_f":74.9,"avg_low_f":53.3,"precip_in":4.28,"snow_in":null,"heating_degree_days":93,"cooling_degree_days":65.9,"days_with_precip":12.5,"days_with_snow":null,"days_freezing":0,"days_90f_plus":1.1,"humidity_pct":null,"wind_speed_mph":null,"clear_sky_pct":null,"overcast_pct":null},{"month":"July","month_number":7,"avg_temp_f":69.7,"avg_high_f":80.5,"avg_low_f":59,"precip_in":3.76,"snow_in":null,"heating_degree_days":13.1,"cooling_degree_days":160.3,"days_with_precip":11.7,"days_with_snow":null,"days_freezing":0,"days_90f_plus":2.3,"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":79.7,"avg_low_f":57.3,"precip_in":3.43,"snow_in":null,"heating_degree_days":23.1,"cooling_degree_days":131.6,"days_with_precip":11.2,"days_with_snow":null,"days_freezing":0,"days_90f_plus":1.8,"humidity_pct":null,"wind_speed_mph":null,"clear_sky_pct":null,"overcast_pct":null},{"month":"September","month_number":9,"avg_temp_f":60.8,"avg_high_f":71.7,"avg_low_f":49.8,"precip_in":3.86,"snow_in":null,"heating_degree_days":165.4,"cooling_degree_days":37.8,"days_with_precip":9,"days_with_snow":null,"days_freezing":0.1,"days_90f_plus":0.6,"humidity_pct":null,"wind_speed_mph":null,"clear_sky_pct":null,"overcast_pct":null},{"month":"October","month_number":10,"avg_temp_f":49.6,"avg_high_f":60.1,"avg_low_f":39,"precip_in":4.79,"snow_in":null,"heating_degree_days":480.5,"cooling_degree_days":1.6,"days_with_precip":11.5,"days_with_snow":null,"days_freezing":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":39.3,"avg_high_f":48.2,"avg_low_f":30.3,"precip_in":3.95,"snow_in":null,"heating_degree_days":772.5,"cooling_degree_days":0,"days_with_precip":10.8,"days_with_snow":null,"days_freezing":19.6,"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":29.7,"avg_high_f":37.8,"avg_low_f":21.6,"precip_in":4.47,"snow_in":null,"heating_degree_days":1094.3,"cooling_degree_days":0,"days_with_precip":12.8,"days_with_snow":null,"days_freezing":27.6,"days_90f_plus":0,"humidity_pct":null,"wind_speed_mph":null,"clear_sky_pct":null,"overcast_pct":null}]}