{"metadata":{"title":"Keokuk Lock Dam, IA Monthly Climate Normals","page_url":"https://plainclimate.com/city/keokuk-lock-dam-ia","primary_station_id":"USC00134381","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, \"Keokuk Lock Dam, IA Climate Normals\". https://plainclimate.com/city/keokuk-lock-dam-ia","row_count":12},"annual_summary":{"city_slug":"keokuk-lock-dam-ia","ann_tavg":52.1,"ann_tmax":61.6,"ann_tmin":42.6,"ann_prcp":39.75,"ann_snow":null,"ann_htdd":5774.7,"ann_cldd":1103.1,"frost_first":"10/27","frost_last":"04/10","growing_season":200,"warmest_month":7,"coldest_month":1,"wettest_month":5,"driest_month":1,"snowiest_month":null,"comfort_score":68},"data":[{"month":"January","month_number":1,"avg_temp_f":24.9,"avg_high_f":33,"avg_low_f":16.7,"precip_in":1.61,"snow_in":null,"heating_degree_days":1244.4,"cooling_degree_days":0,"days_with_precip":8,"days_with_snow":null,"days_freezing":28.3,"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":29.1,"avg_high_f":38,"avg_low_f":20.3,"precip_in":1.82,"snow_in":null,"heating_degree_days":1003.7,"cooling_degree_days":0,"days_with_precip":7.9,"days_with_snow":null,"days_freezing":24.2,"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":40.1,"avg_high_f":49.7,"avg_low_f":30.6,"precip_in":2.54,"snow_in":null,"heating_degree_days":772,"cooling_degree_days":1.6,"days_with_precip":9.1,"days_with_snow":null,"days_freezing":17.7,"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":51.9,"avg_high_f":62.4,"avg_low_f":41.4,"precip_in":4.21,"snow_in":null,"heating_degree_days":402.1,"cooling_degree_days":9.1,"days_with_precip":11,"days_with_snow":null,"days_freezing":4,"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":62.7,"avg_high_f":72.8,"avg_low_f":52.6,"precip_in":5.26,"snow_in":null,"heating_degree_days":144.4,"cooling_degree_days":73.1,"days_with_precip":12.6,"days_with_snow":null,"days_freezing":0,"days_90f_plus":0.7,"humidity_pct":null,"wind_speed_mph":null,"clear_sky_pct":null,"overcast_pct":null},{"month":"June","month_number":6,"avg_temp_f":72.3,"avg_high_f":82,"avg_low_f":62.5,"precip_in":5.21,"snow_in":null,"heating_degree_days":15.1,"cooling_degree_days":232.5,"days_with_precip":10.4,"days_with_snow":null,"days_freezing":0,"days_90f_plus":5.2,"humidity_pct":null,"wind_speed_mph":null,"clear_sky_pct":null,"overcast_pct":null},{"month":"July","month_number":7,"avg_temp_f":76.1,"avg_high_f":85.6,"avg_low_f":66.6,"precip_in":4.08,"snow_in":null,"heating_degree_days":1.2,"cooling_degree_days":345.2,"days_with_precip":9.4,"days_with_snow":null,"days_freezing":0,"days_90f_plus":9.5,"humidity_pct":null,"wind_speed_mph":null,"clear_sky_pct":null,"overcast_pct":null},{"month":"August","month_number":8,"avg_temp_f":74.4,"avg_high_f":84,"avg_low_f":64.8,"precip_in":3.77,"snow_in":null,"heating_degree_days":3.3,"cooling_degree_days":294.6,"days_with_precip":7.6,"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":66.8,"avg_high_f":77.4,"avg_low_f":56.3,"precip_in":3.42,"snow_in":null,"heating_degree_days":72.7,"cooling_degree_days":128.1,"days_with_precip":7.1,"days_with_snow":null,"days_freezing":0.1,"days_90f_plus":3,"humidity_pct":null,"wind_speed_mph":null,"clear_sky_pct":null,"overcast_pct":null},{"month":"October","month_number":10,"avg_temp_f":54.7,"avg_high_f":65,"avg_low_f":44.4,"precip_in":3.32,"snow_in":null,"heating_degree_days":338,"cooling_degree_days":18.7,"days_with_precip":8.6,"days_with_snow":null,"days_freezing":2.3,"days_90f_plus":0.2,"humidity_pct":null,"wind_speed_mph":null,"clear_sky_pct":null,"overcast_pct":null},{"month":"November","month_number":11,"avg_temp_f":41.6,"avg_high_f":50.5,"avg_low_f":32.6,"precip_in":2.56,"snow_in":null,"heating_degree_days":703.9,"cooling_degree_days":0.4,"days_with_precip":7.9,"days_with_snow":null,"days_freezing":14.6,"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":30.3,"avg_high_f":38.2,"avg_low_f":22.5,"precip_in":1.95,"snow_in":null,"heating_degree_days":1074,"cooling_degree_days":0,"days_with_precip":7.7,"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}]}