{"metadata":{"title":"Norris Madison Pwr House, MT Monthly Climate Normals","page_url":"https://plainclimate.com/city/norris-madison-pwr-house-mt","primary_station_id":"USC00246157","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, \"Norris Madison Pwr House, MT Climate Normals\". https://plainclimate.com/city/norris-madison-pwr-house-mt","row_count":12},"annual_summary":{"city_slug":"norris-madison-pwr-house-mt","ann_tavg":49.2,"ann_tmax":59.9,"ann_tmin":38.5,"ann_prcp":18.36,"ann_snow":51.8,"ann_htdd":6261.5,"ann_cldd":523.1,"frost_first":"10/10","frost_last":"04/30","growing_season":163,"warmest_month":7,"coldest_month":12,"wettest_month":6,"driest_month":1,"snowiest_month":2,"comfort_score":44},"data":[{"month":"January","month_number":1,"avg_temp_f":31.3,"avg_high_f":38.9,"avg_low_f":23.8,"precip_in":0.53,"snow_in":7.1,"heating_degree_days":1043.2,"cooling_degree_days":0,"days_with_precip":4.9,"days_with_snow":3.6,"days_freezing":25.3,"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":33,"avg_high_f":41.5,"avg_low_f":24.5,"precip_in":0.74,"snow_in":12.9,"heating_degree_days":896,"cooling_degree_days":0,"days_with_precip":5.9,"days_with_snow":3.6,"days_freezing":22,"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":39.9,"avg_high_f":49.6,"avg_low_f":30.3,"precip_in":1.17,"snow_in":7.1,"heating_degree_days":776.6,"cooling_degree_days":0,"days_with_precip":6.9,"days_with_snow":2.4,"days_freezing":18.3,"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":46.2,"avg_high_f":56.8,"avg_low_f":35.6,"precip_in":2.26,"snow_in":5.3,"heating_degree_days":564.2,"cooling_degree_days":0.2,"days_with_precip":10.2,"days_with_snow":1.3,"days_freezing":10.6,"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":54.8,"avg_high_f":66.2,"avg_low_f":43.4,"precip_in":3,"snow_in":1.6,"heating_degree_days":324.4,"cooling_degree_days":8.2,"days_with_precip":11.6,"days_with_snow":0.3,"days_freezing":1.8,"days_90f_plus":0.1,"humidity_pct":null,"wind_speed_mph":null,"clear_sky_pct":null,"overcast_pct":null},{"month":"June","month_number":6,"avg_temp_f":62.5,"avg_high_f":75,"avg_low_f":50,"precip_in":3.17,"snow_in":0,"heating_degree_days":127.9,"cooling_degree_days":52.9,"days_with_precip":11.4,"days_with_snow":0,"days_freezing":0,"days_90f_plus":1.2,"humidity_pct":null,"wind_speed_mph":null,"clear_sky_pct":null,"overcast_pct":null},{"month":"July","month_number":7,"avg_temp_f":71.3,"avg_high_f":85.4,"avg_low_f":57.1,"precip_in":1.32,"snow_in":0,"heating_degree_days":18.9,"cooling_degree_days":212.5,"days_with_precip":7,"days_with_snow":0,"days_freezing":0,"days_90f_plus":9.6,"humidity_pct":null,"wind_speed_mph":null,"clear_sky_pct":null,"overcast_pct":null},{"month":"August","month_number":8,"avg_temp_f":70.5,"avg_high_f":84.9,"avg_low_f":56.2,"precip_in":1.41,"snow_in":0,"heating_degree_days":22.7,"cooling_degree_days":194.7,"days_with_precip":6.9,"days_with_snow":0,"days_freezing":0,"days_90f_plus":8.5,"humidity_pct":null,"wind_speed_mph":null,"clear_sky_pct":null,"overcast_pct":null},{"month":"September","month_number":9,"avg_temp_f":61.9,"avg_high_f":75.3,"avg_low_f":48.5,"precip_in":1.44,"snow_in":0,"heating_degree_days":144.8,"cooling_degree_days":51.8,"days_with_precip":5.9,"days_with_snow":0,"days_freezing":0.5,"days_90f_plus":1.2,"humidity_pct":null,"wind_speed_mph":null,"clear_sky_pct":null,"overcast_pct":null},{"month":"October","month_number":10,"avg_temp_f":49.5,"avg_high_f":60.1,"avg_low_f":38.8,"precip_in":1.69,"snow_in":2.7,"heating_degree_days":484.7,"cooling_degree_days":2.7,"days_with_precip":7.7,"days_with_snow":0.8,"days_freezing":6.5,"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":38.4,"avg_high_f":46.6,"avg_low_f":30.2,"precip_in":0.81,"snow_in":5.4,"heating_degree_days":798,"cooling_degree_days":0,"days_with_precip":5.8,"days_with_snow":2.3,"days_freezing":17.1,"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":30.8,"avg_high_f":38.1,"avg_low_f":23.5,"precip_in":0.82,"snow_in":9.7,"heating_degree_days":1060.1,"cooling_degree_days":0,"days_with_precip":6.1,"days_with_snow":3.7,"days_freezing":25.1,"days_90f_plus":0,"humidity_pct":null,"wind_speed_mph":null,"clear_sky_pct":null,"overcast_pct":null}]}