{"location":{"city":"Juliszewo","voivodeship":"Mazowieckie","community":"Gmina Glinojeck","postalCode":"06-450","latitude":52.8399,"longitude":20.3357,"elevation":113},"climateZone":3,"standardOutsideTemp":-20,"annualMeanTemp":8.6,"monthly":[{"month":1,"outsideTemp":-1.92,"heatingDays":31,"degreeDayNum":617,"solarIrradianceKwhM2":22.4,"windSpeedAvg":5.85,"relativeHumidity":85.8,"outsideTempOnHeatingDays":-1.92},{"month":2,"outsideTemp":-0.87,"heatingDays":28,"degreeDayNum":533,"solarIrradianceKwhM2":40.3,"windSpeedAvg":5.8,"relativeHumidity":83.1,"outsideTempOnHeatingDays":-0.87},{"month":3,"outsideTemp":2.55,"heatingDays":31,"degreeDayNum":479,"solarIrradianceKwhM2":83.6,"windSpeedAvg":5.84,"relativeHumidity":77.1,"outsideTempOnHeatingDays":2.55},{"month":4,"outsideTemp":8.38,"heatingDays":29,"degreeDayNum":289,"solarIrradianceKwhM2":128,"windSpeedAvg":5.27,"relativeHumidity":71.2,"outsideTempOnHeatingDays":8.28},{"month":5,"outsideTemp":13.5,"heatingDays":27,"degreeDayNum":146,"solarIrradianceKwhM2":162.3,"windSpeedAvg":5.12,"relativeHumidity":70.9,"outsideTempOnHeatingDays":12.62},{"month":6,"outsideTemp":16.94,"heatingDays":19,"degreeDayNum":56,"solarIrradianceKwhM2":165.6,"windSpeedAvg":5.02,"relativeHumidity":71,"outsideTempOnHeatingDays":15},{"month":7,"outsideTemp":19.06,"heatingDays":12,"degreeDayNum":22,"solarIrradianceKwhM2":163.7,"windSpeedAvg":4.87,"relativeHumidity":72,"outsideTempOnHeatingDays":16.16},{"month":8,"outsideTemp":18.75,"heatingDays":12,"degreeDayNum":25,"solarIrradianceKwhM2":139.4,"windSpeedAvg":4.68,"relativeHumidity":71.1,"outsideTempOnHeatingDays":16},{"month":9,"outsideTemp":14.01,"heatingDays":26,"degreeDayNum":124,"solarIrradianceKwhM2":89.4,"windSpeedAvg":5.12,"relativeHumidity":76.3,"outsideTempOnHeatingDays":13.36},{"month":10,"outsideTemp":8.67,"heatingDays":30,"degreeDayNum":289,"solarIrradianceKwhM2":53.1,"windSpeedAvg":5.44,"relativeHumidity":81.6,"outsideTempOnHeatingDays":8.65},{"month":11,"outsideTemp":3.76,"heatingDays":30,"degreeDayNum":427,"solarIrradianceKwhM2":24.3,"windSpeedAvg":5.48,"relativeHumidity":86.9,"outsideTempOnHeatingDays":3.76},{"month":12,"outsideTemp":-0.22,"heatingDays":31,"degreeDayNum":564,"solarIrradianceKwhM2":15.9,"windSpeedAvg":5.63,"relativeHumidity":86.9,"outsideTempOnHeatingDays":-0.22}],"groundTemp1m":9.08,"groundTemp2m":9.08,"solarIrradianceKwhM2Year":1088,"windSpeedAvg":5.34,"relativeHumidityAvg":77.8,"suitability":{"score":63,"rating":"fair","color":"yellow","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":"2026-05-19T12:17:42.516Z","attribution":"Weather data by Open-Meteo.com (CC BY 4.0)","legalRef":"PN-B-02403:1982 (climateZone, standardOutsideTemp)","apiVersion":"v1"}}