{"location":{"city":"Cześniki-Kolonia","voivodeship":"Lubelskie","community":"Sitno","postalCode":"22-424","latitude":50.6973,"longitude":23.4618,"elevation":222},"climateZone":3,"standardOutsideTemp":-20,"annualMeanTemp":8.6,"monthly":[{"month":1,"outsideTemp":-2.41,"heatingDays":31,"degreeDayNum":632,"solarIrradianceKwhM2":26.8,"windSpeedAvg":5.36,"relativeHumidity":83.8,"outsideTempOnHeatingDays":-2.41},{"month":2,"outsideTemp":-1.31,"heatingDays":28,"degreeDayNum":546,"solarIrradianceKwhM2":44.8,"windSpeedAvg":5.31,"relativeHumidity":82.3,"outsideTempOnHeatingDays":-1.31},{"month":3,"outsideTemp":2.51,"heatingDays":31,"degreeDayNum":480,"solarIrradianceKwhM2":87.9,"windSpeedAvg":5.35,"relativeHumidity":76.4,"outsideTempOnHeatingDays":2.51},{"month":4,"outsideTemp":8.74,"heatingDays":29,"degreeDayNum":278,"solarIrradianceKwhM2":130.8,"windSpeedAvg":4.89,"relativeHumidity":71,"outsideTempOnHeatingDays":8.63},{"month":5,"outsideTemp":14.02,"heatingDays":26,"degreeDayNum":130,"solarIrradianceKwhM2":161.4,"windSpeedAvg":4.64,"relativeHumidity":71.9,"outsideTempOnHeatingDays":13.02},{"month":6,"outsideTemp":17.58,"heatingDays":16,"degreeDayNum":45,"solarIrradianceKwhM2":168.2,"windSpeedAvg":4.46,"relativeHumidity":72.5,"outsideTempOnHeatingDays":15.29},{"month":7,"outsideTemp":19.48,"heatingDays":10,"degreeDayNum":17,"solarIrradianceKwhM2":164.2,"windSpeedAvg":4.3,"relativeHumidity":73.1,"outsideTempOnHeatingDays":16.23},{"month":8,"outsideTemp":19.07,"heatingDays":11,"degreeDayNum":22,"solarIrradianceKwhM2":145.3,"windSpeedAvg":4.19,"relativeHumidity":71.7,"outsideTempOnHeatingDays":16.02},{"month":9,"outsideTemp":14.13,"heatingDays":26,"degreeDayNum":122,"solarIrradianceKwhM2":94.1,"windSpeedAvg":4.61,"relativeHumidity":76.4,"outsideTempOnHeatingDays":13.3},{"month":10,"outsideTemp":8.78,"heatingDays":30,"degreeDayNum":285,"solarIrradianceKwhM2":59.6,"windSpeedAvg":4.93,"relativeHumidity":80.2,"outsideTempOnHeatingDays":8.74},{"month":11,"outsideTemp":3.68,"heatingDays":30,"degreeDayNum":429,"solarIrradianceKwhM2":29.9,"windSpeedAvg":5.04,"relativeHumidity":84.6,"outsideTempOnHeatingDays":3.68},{"month":12,"outsideTemp":-0.78,"heatingDays":31,"degreeDayNum":582,"solarIrradianceKwhM2":19.9,"windSpeedAvg":5.27,"relativeHumidity":85,"outsideTempOnHeatingDays":-0.78}],"groundTemp1m":9.09,"groundTemp2m":9.09,"solarIrradianceKwhM2Year":1133.1,"windSpeedAvg":4.86,"relativeHumidityAvg":77.4,"suitability":{"score":63,"rating":"fair","color":"yellow","estimatedScop":4.1,"notes":["Wysokie nasłonecznienie — bardzo dobre warunki dla hybrydy pompa ciepła + PV."]},"_meta":{"source":"OPEN_METEO_ERA5_LAND_1991_2020","sourceLabel":"ERA5-Land Reanalysis (1991–2020)","fetchedAt":"2026-05-19T12:15:56.405Z","attribution":"Weather data by Open-Meteo.com (CC BY 4.0)","legalRef":"PN-B-02403:1982 (climateZone, standardOutsideTemp)","apiVersion":"v1"}}