{"metadata":{"title":"Sigourney, IA Monthly Climate Normals","page_url":"https://plainclimate.com/city/sigourney-ia","primary_station_id":"USC00137678","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, \"Sigourney, IA Climate Normals\". https://plainclimate.com/city/sigourney-ia","row_count":12},"annual_summary":{"city_slug":"sigourney-ia","ann_tavg":48.9,"ann_tmax":59.6,"ann_tmin":38.2,"ann_prcp":37.41,"ann_snow":null,"ann_htdd":6640.5,"ann_cldd":806.3,"frost_first":"10/15","frost_last":"04/24","growing_season":174,"warmest_month":7,"coldest_month":1,"wettest_month":6,"driest_month":1,"snowiest_month":null,"comfort_score":64},"data":[{"month":"January","month_number":1,"avg_temp_f":20.7,"avg_high_f":29.8,"avg_low_f":11.5,"precip_in":1.18,"snow_in":null,"heating_degree_days":1374.7,"cooling_degree_days":0,"days_with_precip":5.7,"days_with_snow":null,"days_freezing":30.1,"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":24.8,"avg_high_f":34.6,"avg_low_f":15.1,"precip_in":1.47,"snow_in":null,"heating_degree_days":1124.2,"cooling_degree_days":0,"days_with_precip":6.4,"days_with_snow":null,"days_freezing":25.8,"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":37,"avg_high_f":47.6,"avg_low_f":26.3,"precip_in":2.34,"snow_in":null,"heating_degree_days":870.6,"cooling_degree_days":1,"days_with_precip":7.3,"days_with_snow":null,"days_freezing":22.8,"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":48.9,"avg_high_f":60.7,"avg_low_f":37.2,"precip_in":3.7,"snow_in":null,"heating_degree_days":486.2,"cooling_degree_days":4.7,"days_with_precip":9.4,"days_with_snow":null,"days_freezing":8.1,"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":60,"avg_high_f":71,"avg_low_f":49.1,"precip_in":4.95,"snow_in":null,"heating_degree_days":198.8,"cooling_degree_days":45.3,"days_with_precip":11.8,"days_with_snow":null,"days_freezing":0.4,"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":69.8,"avg_high_f":80.6,"avg_low_f":59.1,"precip_in":5.11,"snow_in":null,"heating_degree_days":27.1,"cooling_degree_days":172.5,"days_with_precip":11.6,"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":"July","month_number":7,"avg_temp_f":73.6,"avg_high_f":84.6,"avg_low_f":62.7,"precip_in":3.93,"snow_in":null,"heating_degree_days":3.4,"cooling_degree_days":271.5,"days_with_precip":8.2,"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":"August","month_number":8,"avg_temp_f":71.6,"avg_high_f":82.8,"avg_low_f":60.4,"precip_in":4.76,"snow_in":null,"heating_degree_days":10.8,"cooling_degree_days":215.4,"days_with_precip":8.8,"days_with_snow":null,"days_freezing":0,"days_90f_plus":4.4,"humidity_pct":null,"wind_speed_mph":null,"clear_sky_pct":null,"overcast_pct":null},{"month":"September","month_number":9,"avg_temp_f":64.1,"avg_high_f":76.4,"avg_low_f":51.7,"precip_in":3.47,"snow_in":null,"heating_degree_days":113.9,"cooling_degree_days":85.4,"days_with_precip":7.4,"days_with_snow":null,"days_freezing":0.1,"days_90f_plus":1.7,"humidity_pct":null,"wind_speed_mph":null,"clear_sky_pct":null,"overcast_pct":null},{"month":"October","month_number":10,"avg_temp_f":51.6,"avg_high_f":63.4,"avg_low_f":39.8,"precip_in":2.78,"snow_in":null,"heating_degree_days":425.8,"cooling_degree_days":10.4,"days_with_precip":7.6,"days_with_snow":null,"days_freezing":6.4,"days_90f_plus":0.1,"humidity_pct":null,"wind_speed_mph":null,"clear_sky_pct":null,"overcast_pct":null},{"month":"November","month_number":11,"avg_temp_f":38,"avg_high_f":48.2,"avg_low_f":27.7,"precip_in":2.18,"snow_in":null,"heating_degree_days":811.6,"cooling_degree_days":0.1,"days_with_precip":6.5,"days_with_snow":null,"days_freezing":19.7,"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":26.5,"avg_high_f":35.3,"avg_low_f":17.7,"precip_in":1.54,"snow_in":null,"heating_degree_days":1193.5,"cooling_degree_days":0,"days_with_precip":5.9,"days_with_snow":null,"days_freezing":28.6,"days_90f_plus":0,"humidity_pct":null,"wind_speed_mph":null,"clear_sky_pct":null,"overcast_pct":null}]}