{"metadata":{"title":"Ashburnham, MA Monthly Climate Normals","page_url":"https://plainclimate.com/city/ashburnham-ma","primary_station_id":"USC00190190","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, \"Ashburnham, MA Climate Normals\". https://plainclimate.com/city/ashburnham-ma","row_count":12},"annual_summary":{"city_slug":"ashburnham-ma","ann_tavg":46.2,"ann_tmax":55.6,"ann_tmin":36.7,"ann_prcp":49.32,"ann_snow":75.2,"ann_htdd":7229.9,"ann_cldd":393.6,"frost_first":"10/13","frost_last":"05/02","growing_season":164,"warmest_month":7,"coldest_month":1,"wettest_month":10,"driest_month":2,"snowiest_month":2,"comfort_score":54},"data":[{"month":"January","month_number":1,"avg_temp_f":22.1,"avg_high_f":30.6,"avg_low_f":13.6,"precip_in":3.55,"snow_in":16.9,"heating_degree_days":1329.8,"cooling_degree_days":0,"days_with_precip":13.3,"days_with_snow":9.6,"days_freezing":29.8,"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":24,"avg_high_f":33,"avg_low_f":15,"precip_in":3.34,"snow_in":18.9,"heating_degree_days":1147.9,"cooling_degree_days":0,"days_with_precip":10.9,"days_with_snow":8.1,"days_freezing":27.5,"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":32,"avg_high_f":41.3,"avg_low_f":22.7,"precip_in":4.41,"snow_in":16.4,"heating_degree_days":1023.2,"cooling_degree_days":0.3,"days_with_precip":12.7,"days_with_snow":6.5,"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":44.1,"avg_high_f":54.6,"avg_low_f":33.6,"precip_in":4.21,"snow_in":4,"heating_degree_days":628.5,"cooling_degree_days":1.5,"days_with_precip":12,"days_with_snow":1.9,"days_freezing":13.8,"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":55.1,"avg_high_f":66,"avg_low_f":44.3,"precip_in":4.02,"snow_in":0.1,"heating_degree_days":317.1,"cooling_degree_days":11.7,"days_with_precip":12.6,"days_with_snow":0.1,"days_freezing":0.8,"days_90f_plus":0.2,"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":74.6,"avg_low_f":53.7,"precip_in":4.17,"snow_in":0,"heating_degree_days":91.8,"cooling_degree_days":66.2,"days_with_precip":11.9,"days_with_snow":0,"days_freezing":0,"days_90f_plus":0.5,"humidity_pct":null,"wind_speed_mph":null,"clear_sky_pct":null,"overcast_pct":null},{"month":"July","month_number":7,"avg_temp_f":69.6,"avg_high_f":79.6,"avg_low_f":59.6,"precip_in":3.94,"snow_in":0,"heating_degree_days":16.1,"cooling_degree_days":158.6,"days_with_precip":10.8,"days_with_snow":0,"days_freezing":0,"days_90f_plus":1.9,"humidity_pct":null,"wind_speed_mph":null,"clear_sky_pct":null,"overcast_pct":null},{"month":"August","month_number":8,"avg_temp_f":67.7,"avg_high_f":78.1,"avg_low_f":57.4,"precip_in":3.89,"snow_in":0,"heating_degree_days":28.8,"cooling_degree_days":114,"days_with_precip":9.8,"days_with_snow":0,"days_freezing":0,"days_90f_plus":0.4,"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":70.8,"avg_low_f":50.7,"precip_in":4.24,"snow_in":0,"heating_degree_days":168,"cooling_degree_days":40.4,"days_with_precip":8.9,"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":"October","month_number":10,"avg_temp_f":48.3,"avg_high_f":57.4,"avg_low_f":39.2,"precip_in":5.08,"snow_in":0.3,"heating_degree_days":518.6,"cooling_degree_days":1,"days_with_precip":10.8,"days_with_snow":0.3,"days_freezing":5.8,"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":38.2,"avg_high_f":45.9,"avg_low_f":30.5,"precip_in":3.82,"snow_in":3,"heating_degree_days":804.1,"cooling_degree_days":0,"days_with_precip":10.5,"days_with_snow":1.9,"days_freezing":20.2,"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":27.7,"avg_high_f":35.2,"avg_low_f":20.2,"precip_in":4.65,"snow_in":15.6,"heating_degree_days":1156.2,"cooling_degree_days":0,"days_with_precip":12.9,"days_with_snow":6.8,"days_freezing":28.2,"days_90f_plus":0,"humidity_pct":null,"wind_speed_mph":null,"clear_sky_pct":null,"overcast_pct":null}]}