{"location":{"city":"Marcinkowo","voivodeship":"Warmińsko-Mazurskie","community":"Purda","postalCode":"11-030","latitude":53.6986,"longitude":20.6701,"elevation":138},"climateZone":4,"standardOutsideTemp":-22,"annualMeanTemp":8,"monthly":[{"month":1,"outsideTemp":-2.41,"heatingDays":31,"degreeDayNum":632,"solarIrradianceKwhM2":20.2,"windSpeedAvg":5.79,"relativeHumidity":87.6,"outsideTempOnHeatingDays":-2.41},{"month":2,"outsideTemp":-1.53,"heatingDays":28,"degreeDayNum":551,"solarIrradianceKwhM2":37.8,"windSpeedAvg":5.72,"relativeHumidity":85.2,"outsideTempOnHeatingDays":-1.53},{"month":3,"outsideTemp":1.84,"heatingDays":31,"degreeDayNum":501,"solarIrradianceKwhM2":79.7,"windSpeedAvg":5.63,"relativeHumidity":79.3,"outsideTempOnHeatingDays":1.84},{"month":4,"outsideTemp":7.72,"heatingDays":29,"degreeDayNum":308,"solarIrradianceKwhM2":123.9,"windSpeedAvg":5.11,"relativeHumidity":72.9,"outsideTempOnHeatingDays":7.6},{"month":5,"outsideTemp":13.01,"heatingDays":27,"degreeDayNum":160,"solarIrradianceKwhM2":159.6,"windSpeedAvg":5.03,"relativeHumidity":71.3,"outsideTempOnHeatingDays":12.19},{"month":6,"outsideTemp":16.44,"heatingDays":20,"degreeDayNum":66,"solarIrradianceKwhM2":160.4,"windSpeedAvg":4.98,"relativeHumidity":72,"outsideTempOnHeatingDays":14.81},{"month":7,"outsideTemp":18.55,"heatingDays":14,"degreeDayNum":28,"solarIrradianceKwhM2":159.3,"windSpeedAvg":4.76,"relativeHumidity":74.2,"outsideTempOnHeatingDays":16.05},{"month":8,"outsideTemp":18.2,"heatingDays":15,"degreeDayNum":33,"solarIrradianceKwhM2":134.2,"windSpeedAvg":4.64,"relativeHumidity":74.1,"outsideTempOnHeatingDays":15.84},{"month":9,"outsideTemp":13.6,"heatingDays":27,"degreeDayNum":135,"solarIrradianceKwhM2":86,"windSpeedAvg":5.05,"relativeHumidity":78.7,"outsideTempOnHeatingDays":13.12},{"month":10,"outsideTemp":8.27,"heatingDays":31,"degreeDayNum":301,"solarIrradianceKwhM2":49.7,"windSpeedAvg":5.47,"relativeHumidity":83.4,"outsideTempOnHeatingDays":8.27},{"month":11,"outsideTemp":3.39,"heatingDays":30,"degreeDayNum":438,"solarIrradianceKwhM2":22,"windSpeedAvg":5.54,"relativeHumidity":88.4,"outsideTempOnHeatingDays":3.39},{"month":12,"outsideTemp":-0.55,"heatingDays":31,"degreeDayNum":574,"solarIrradianceKwhM2":13.7,"windSpeedAvg":5.65,"relativeHumidity":88.5,"outsideTempOnHeatingDays":-0.55}],"groundTemp1m":8.52,"groundTemp2m":8.52,"solarIrradianceKwhM2Year":1046.5,"windSpeedAvg":5.28,"relativeHumidityAvg":79.6,"suitability":{"score":55,"rating":"fair","color":"yellow","estimatedScop":4,"notes":["Wysoka średnia prędkość wiatru (5.3 m/s) — większe straty przez infiltrację."]},"_meta":{"source":"OPEN_METEO_ERA5_LAND_1991_2020","sourceLabel":"ERA5-Land Reanalysis (1991–2020)","fetchedAt":"2026-05-19T12:09:12.336Z","attribution":"Weather data by Open-Meteo.com (CC BY 4.0)","legalRef":"PN-B-02403:1982 (climateZone, standardOutsideTemp)","apiVersion":"v1"}}