{"metadata":{"title":"Hennepin Wtr Trmt Plt, IL Monthly Climate Normals","page_url":"https://plainclimate.com/city/hennepin-wtr-trmt-plt-il","primary_station_id":"USC00114013","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, \"Hennepin Wtr Trmt Plt, IL Climate Normals\". https://plainclimate.com/city/hennepin-wtr-trmt-plt-il","row_count":12},"annual_summary":{"city_slug":"hennepin-wtr-trmt-plt-il","ann_tavg":51,"ann_tmax":62.1,"ann_tmin":39.8,"ann_prcp":null,"ann_snow":null,"ann_htdd":6052.8,"ann_cldd":978.9,"frost_first":"10/17","frost_last":"04/24","growing_season":176,"warmest_month":7,"coldest_month":1,"wettest_month":1,"driest_month":null,"snowiest_month":null,"comfort_score":null},"data":[{"month":"January","month_number":1,"avg_temp_f":23.8,"avg_high_f":32.8,"avg_low_f":14.9,"precip_in":null,"snow_in":null,"heating_degree_days":1275.4,"cooling_degree_days":0,"days_with_precip":null,"days_with_snow":null,"days_freezing":28.4,"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":27.7,"avg_high_f":37.2,"avg_low_f":18.3,"precip_in":null,"snow_in":null,"heating_degree_days":1042.9,"cooling_degree_days":0,"days_with_precip":null,"days_with_snow":null,"days_freezing":25.6,"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":39.1,"avg_high_f":50.2,"avg_low_f":28,"precip_in":null,"snow_in":null,"heating_degree_days":804.2,"cooling_degree_days":1.2,"days_with_precip":null,"days_with_snow":null,"days_freezing":22.6,"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":50.5,"avg_high_f":62.9,"avg_low_f":38.1,"precip_in":null,"snow_in":null,"heating_degree_days":445.9,"cooling_degree_days":10.9,"days_with_precip":null,"days_with_snow":null,"days_freezing":9.4,"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":62.1,"avg_high_f":74.3,"avg_low_f":49.8,"precip_in":null,"snow_in":null,"heating_degree_days":161,"cooling_degree_days":69.5,"days_with_precip":null,"days_with_snow":null,"days_freezing":1,"days_90f_plus":1.2,"humidity_pct":null,"wind_speed_mph":null,"clear_sky_pct":null,"overcast_pct":null},{"month":"June","month_number":6,"avg_temp_f":71.3,"avg_high_f":83.1,"avg_low_f":59.5,"precip_in":null,"snow_in":null,"heating_degree_days":22.7,"cooling_degree_days":211.6,"days_with_precip":null,"days_with_snow":null,"days_freezing":0,"days_90f_plus":7.1,"humidity_pct":null,"wind_speed_mph":null,"clear_sky_pct":null,"overcast_pct":null},{"month":"July","month_number":7,"avg_temp_f":74.8,"avg_high_f":86.2,"avg_low_f":63.3,"precip_in":null,"snow_in":null,"heating_degree_days":2.7,"cooling_degree_days":304.9,"days_with_precip":null,"days_with_snow":null,"days_freezing":0,"days_90f_plus":8.9,"humidity_pct":null,"wind_speed_mph":null,"clear_sky_pct":null,"overcast_pct":null},{"month":"August","month_number":8,"avg_temp_f":72.9,"avg_high_f":84.7,"avg_low_f":61.1,"precip_in":null,"snow_in":null,"heating_degree_days":10,"cooling_degree_days":254.8,"days_with_precip":null,"days_with_snow":null,"days_freezing":0,"days_90f_plus":7.2,"humidity_pct":null,"wind_speed_mph":null,"clear_sky_pct":null,"overcast_pct":null},{"month":"September","month_number":9,"avg_temp_f":65.7,"avg_high_f":78.8,"avg_low_f":52.5,"precip_in":null,"snow_in":null,"heating_degree_days":90.5,"cooling_degree_days":109.8,"days_with_precip":null,"days_with_snow":null,"days_freezing":0.4,"days_90f_plus":4,"humidity_pct":null,"wind_speed_mph":null,"clear_sky_pct":null,"overcast_pct":null},{"month":"October","month_number":10,"avg_temp_f":53.9,"avg_high_f":66.3,"avg_low_f":41.5,"precip_in":null,"snow_in":null,"heating_degree_days":359.8,"cooling_degree_days":15.6,"days_with_precip":null,"days_with_snow":null,"days_freezing":6.2,"days_90f_plus":0.4,"humidity_pct":null,"wind_speed_mph":null,"clear_sky_pct":null,"overcast_pct":null},{"month":"November","month_number":11,"avg_temp_f":40.9,"avg_high_f":51,"avg_low_f":30.7,"precip_in":null,"snow_in":null,"heating_degree_days":725.1,"cooling_degree_days":0.7,"days_with_precip":null,"days_with_snow":null,"days_freezing":18.9,"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":29.1,"avg_high_f":38,"avg_low_f":20.2,"precip_in":null,"snow_in":null,"heating_degree_days":1112.7,"cooling_degree_days":0,"days_with_precip":null,"days_with_snow":null,"days_freezing":27.4,"days_90f_plus":0,"humidity_pct":null,"wind_speed_mph":null,"clear_sky_pct":null,"overcast_pct":null}]}