{"location":{"city":"Nowe Gulczewo","voivodeship":"Mazowieckie","community":"Gmina Słupno","postalCode":"09-472","latitude":52.5396,"longitude":19.7774,"elevation":105},"climateZone":3,"standardOutsideTemp":-20,"annualMeanTemp":8.9,"monthly":[{"month":1,"outsideTemp":-1.53,"heatingDays":31,"degreeDayNum":605,"solarIrradianceKwhM2":22.6,"windSpeedAvg":5.67,"relativeHumidity":84.8,"outsideTempOnHeatingDays":-1.53},{"month":2,"outsideTemp":-0.42,"heatingDays":28,"degreeDayNum":520,"solarIrradianceKwhM2":40.1,"windSpeedAvg":5.64,"relativeHumidity":82.2,"outsideTempOnHeatingDays":-0.42},{"month":3,"outsideTemp":2.94,"heatingDays":31,"degreeDayNum":466,"solarIrradianceKwhM2":83.8,"windSpeedAvg":5.66,"relativeHumidity":76.8,"outsideTempOnHeatingDays":2.94},{"month":4,"outsideTemp":8.71,"heatingDays":29,"degreeDayNum":279,"solarIrradianceKwhM2":128.5,"windSpeedAvg":5.15,"relativeHumidity":71.1,"outsideTempOnHeatingDays":8.54},{"month":5,"outsideTemp":13.83,"heatingDays":26,"degreeDayNum":136,"solarIrradianceKwhM2":161.7,"windSpeedAvg":4.98,"relativeHumidity":70.6,"outsideTempOnHeatingDays":12.87},{"month":6,"outsideTemp":17.31,"heatingDays":17,"degreeDayNum":50,"solarIrradianceKwhM2":165.4,"windSpeedAvg":4.9,"relativeHumidity":70.4,"outsideTempOnHeatingDays":15.14},{"month":7,"outsideTemp":19.4,"heatingDays":10,"degreeDayNum":19,"solarIrradianceKwhM2":162.9,"windSpeedAvg":4.76,"relativeHumidity":71.2,"outsideTempOnHeatingDays":16.25},{"month":8,"outsideTemp":19.09,"heatingDays":11,"degreeDayNum":21,"solarIrradianceKwhM2":139.8,"windSpeedAvg":4.57,"relativeHumidity":70.4,"outsideTempOnHeatingDays":16.07},{"month":9,"outsideTemp":14.31,"heatingDays":26,"degreeDayNum":116,"solarIrradianceKwhM2":89.8,"windSpeedAvg":4.98,"relativeHumidity":75.8,"outsideTempOnHeatingDays":13.58},{"month":10,"outsideTemp":9.03,"heatingDays":30,"degreeDayNum":278,"solarIrradianceKwhM2":53.9,"windSpeedAvg":5.26,"relativeHumidity":81.1,"outsideTempOnHeatingDays":9.01},{"month":11,"outsideTemp":4.09,"heatingDays":30,"degreeDayNum":417,"solarIrradianceKwhM2":25,"windSpeedAvg":5.3,"relativeHumidity":86.4,"outsideTempOnHeatingDays":4.09},{"month":12,"outsideTemp":0.13,"heatingDays":31,"degreeDayNum":554,"solarIrradianceKwhM2":16.4,"windSpeedAvg":5.49,"relativeHumidity":86.2,"outsideTempOnHeatingDays":0.13}],"groundTemp1m":9.29,"groundTemp2m":9.29,"solarIrradianceKwhM2Year":1089.9,"windSpeedAvg":5.19,"relativeHumidityAvg":77.3,"suitability":{"score":68,"rating":"good","color":"lime","estimatedScop":4.1,"notes":["Wysokie nasłonecznienie — bardzo dobre warunki dla hybrydy pompa ciepła + PV.","Wysoka średnia prędkość wiatru (5.2 m/s) — większe straty przez infiltrację."]},"_meta":{"source":"OPEN_METEO_ERA5_LAND_1991_2020","sourceLabel":"ERA5-Land Reanalysis (1991–2020)","fetchedAt":"2026-05-19T12:08:29.643Z","attribution":"Weather data by Open-Meteo.com (CC BY 4.0)","legalRef":"PN-B-02403:1982 (climateZone, standardOutsideTemp)","apiVersion":"v1"}}