{"location":{"city":"Potuły","voivodeship":"Wielkopolskie","community":"Wągrowiec","postalCode":"62-112","latitude":52.7871,"longitude":17.0161,"elevation":74},"climateZone":2,"standardOutsideTemp":-18,"annualMeanTemp":9.2,"monthly":[{"month":1,"outsideTemp":-0.51,"heatingDays":31,"degreeDayNum":573,"solarIrradianceKwhM2":21.5,"windSpeedAvg":5.59,"relativeHumidity":84.8,"outsideTempOnHeatingDays":-0.51},{"month":2,"outsideTemp":0.41,"heatingDays":28,"degreeDayNum":497,"solarIrradianceKwhM2":39.8,"windSpeedAvg":5.57,"relativeHumidity":81.7,"outsideTempOnHeatingDays":0.41},{"month":3,"outsideTemp":3.46,"heatingDays":31,"degreeDayNum":450,"solarIrradianceKwhM2":82,"windSpeedAvg":5.49,"relativeHumidity":77.3,"outsideTempOnHeatingDays":3.46},{"month":4,"outsideTemp":8.8,"heatingDays":29,"degreeDayNum":276,"solarIrradianceKwhM2":129.4,"windSpeedAvg":5.13,"relativeHumidity":70.9,"outsideTempOnHeatingDays":8.6},{"month":5,"outsideTemp":13.76,"heatingDays":26,"degreeDayNum":139,"solarIrradianceKwhM2":160.3,"windSpeedAvg":4.94,"relativeHumidity":69.1,"outsideTempOnHeatingDays":12.8},{"month":6,"outsideTemp":17.22,"heatingDays":18,"degreeDayNum":52,"solarIrradianceKwhM2":162.8,"windSpeedAvg":4.94,"relativeHumidity":68.4,"outsideTempOnHeatingDays":15.08},{"month":7,"outsideTemp":19.27,"heatingDays":11,"degreeDayNum":21,"solarIrradianceKwhM2":160.7,"windSpeedAvg":4.78,"relativeHumidity":69.8,"outsideTempOnHeatingDays":16.19},{"month":8,"outsideTemp":19.03,"heatingDays":12,"degreeDayNum":23,"solarIrradianceKwhM2":137.5,"windSpeedAvg":4.59,"relativeHumidity":70.1,"outsideTempOnHeatingDays":16.09},{"month":9,"outsideTemp":14.48,"heatingDays":26,"degreeDayNum":112,"solarIrradianceKwhM2":89.8,"windSpeedAvg":4.9,"relativeHumidity":75.6,"outsideTempOnHeatingDays":13.69},{"month":10,"outsideTemp":9.41,"heatingDays":31,"degreeDayNum":266,"solarIrradianceKwhM2":52.7,"windSpeedAvg":5.14,"relativeHumidity":81.3,"outsideTempOnHeatingDays":9.4},{"month":11,"outsideTemp":4.46,"heatingDays":30,"degreeDayNum":406,"solarIrradianceKwhM2":24.1,"windSpeedAvg":5.17,"relativeHumidity":87.1,"outsideTempOnHeatingDays":4.46},{"month":12,"outsideTemp":0.91,"heatingDays":31,"degreeDayNum":529,"solarIrradianceKwhM2":15.9,"windSpeedAvg":5.42,"relativeHumidity":86.6,"outsideTempOnHeatingDays":0.91}],"groundTemp1m":9.45,"groundTemp2m":9.45,"solarIrradianceKwhM2Year":1076.4,"windSpeedAvg":5.14,"relativeHumidityAvg":76.9,"suitability":{"score":73,"rating":"good","color":"lime","estimatedScop":4.1,"notes":["Wysokie nasłonecznienie — bardzo dobre warunki dla hybrydy pompa ciepła + PV.","Wysoka średnia prędkość wiatru (5.1 m/s) — większe straty przez infiltrację."]},"_meta":{"source":"OPEN_METEO_ERA5_LAND_1991_2020","sourceLabel":"ERA5-Land Reanalysis (1991–2020)","fetchedAt":"2026-05-19T12:34:18.648Z","attribution":"Weather data by Open-Meteo.com (CC BY 4.0)","legalRef":"PN-B-02403:1982 (climateZone, standardOutsideTemp)","apiVersion":"v1"}}