{"location":{"city":"Iwanowice","voivodeship":"Wielkopolskie","community":"Gmina Szczytniki","postalCode":"62-865","latitude":51.6531,"longitude":18.3229,"elevation":133},"climateZone":2,"standardOutsideTemp":-18,"annualMeanTemp":9.3,"monthly":[{"month":1,"outsideTemp":-0.95,"heatingDays":31,"degreeDayNum":587,"solarIrradianceKwhM2":24.3,"windSpeedAvg":5.84,"relativeHumidity":83.9,"outsideTempOnHeatingDays":-0.95},{"month":2,"outsideTemp":0.18,"heatingDays":28,"degreeDayNum":503,"solarIrradianceKwhM2":42.7,"windSpeedAvg":5.77,"relativeHumidity":80.9,"outsideTempOnHeatingDays":0.18},{"month":3,"outsideTemp":3.48,"heatingDays":31,"degreeDayNum":450,"solarIrradianceKwhM2":86,"windSpeedAvg":5.75,"relativeHumidity":76.3,"outsideTempOnHeatingDays":3.48},{"month":4,"outsideTemp":9.04,"heatingDays":29,"degreeDayNum":269,"solarIrradianceKwhM2":130.6,"windSpeedAvg":5.28,"relativeHumidity":69.7,"outsideTempOnHeatingDays":8.9},{"month":5,"outsideTemp":14.13,"heatingDays":26,"degreeDayNum":129,"solarIrradianceKwhM2":159.9,"windSpeedAvg":5.16,"relativeHumidity":68.4,"outsideTempOnHeatingDays":13},{"month":6,"outsideTemp":17.69,"heatingDays":16,"degreeDayNum":46,"solarIrradianceKwhM2":163.7,"windSpeedAvg":5.05,"relativeHumidity":67.6,"outsideTempOnHeatingDays":15.21},{"month":7,"outsideTemp":19.72,"heatingDays":10,"degreeDayNum":17,"solarIrradianceKwhM2":162.6,"windSpeedAvg":4.95,"relativeHumidity":68.1,"outsideTempOnHeatingDays":16.27},{"month":8,"outsideTemp":19.51,"heatingDays":9,"degreeDayNum":19,"solarIrradianceKwhM2":140.9,"windSpeedAvg":4.71,"relativeHumidity":67.6,"outsideTempOnHeatingDays":15.99},{"month":9,"outsideTemp":14.7,"heatingDays":25,"degreeDayNum":107,"solarIrradianceKwhM2":92.5,"windSpeedAvg":5.04,"relativeHumidity":73.6,"outsideTempOnHeatingDays":13.69},{"month":10,"outsideTemp":9.52,"heatingDays":30,"degreeDayNum":263,"solarIrradianceKwhM2":56.2,"windSpeedAvg":5.32,"relativeHumidity":79.7,"outsideTempOnHeatingDays":9.47},{"month":11,"outsideTemp":4.59,"heatingDays":30,"degreeDayNum":402,"solarIrradianceKwhM2":27.5,"windSpeedAvg":5.43,"relativeHumidity":85.4,"outsideTempOnHeatingDays":4.59},{"month":12,"outsideTemp":0.58,"heatingDays":31,"degreeDayNum":540,"solarIrradianceKwhM2":18.6,"windSpeedAvg":5.69,"relativeHumidity":85.2,"outsideTempOnHeatingDays":0.58}],"groundTemp1m":9.72,"groundTemp2m":9.72,"solarIrradianceKwhM2Year":1105.4,"windSpeedAvg":5.33,"relativeHumidityAvg":75.5,"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 (5.3 m/s) — większe straty przez infiltrację."]},"_meta":{"source":"OPEN_METEO_ERA5_LAND_1991_2020","sourceLabel":"ERA5-Land Reanalysis (1991–2020)","fetchedAt":"2026-05-19T12:09:14.076Z","attribution":"Weather data by Open-Meteo.com (CC BY 4.0)","legalRef":"PN-B-02403:1982 (climateZone, standardOutsideTemp)","apiVersion":"v1"}}