{"location":{"city":"Kłonna","voivodeship":"Mazowieckie","community":"Gmina Odrzywół","postalCode":"26-425","latitude":51.4963,"longitude":20.5392,"elevation":163},"climateZone":3,"standardOutsideTemp":-20,"annualMeanTemp":8.9,"monthly":[{"month":1,"outsideTemp":-1.64,"heatingDays":31,"degreeDayNum":608,"solarIrradianceKwhM2":25.5,"windSpeedAvg":5.82,"relativeHumidity":83.7,"outsideTempOnHeatingDays":-1.64},{"month":2,"outsideTemp":-0.56,"heatingDays":28,"degreeDayNum":524,"solarIrradianceKwhM2":43.9,"windSpeedAvg":5.71,"relativeHumidity":82,"outsideTempOnHeatingDays":-0.56},{"month":3,"outsideTemp":2.98,"heatingDays":31,"degreeDayNum":465,"solarIrradianceKwhM2":87.8,"windSpeedAvg":5.74,"relativeHumidity":76.4,"outsideTempOnHeatingDays":2.98},{"month":4,"outsideTemp":8.79,"heatingDays":29,"degreeDayNum":276,"solarIrradianceKwhM2":128.2,"windSpeedAvg":5.17,"relativeHumidity":70.7,"outsideTempOnHeatingDays":8.66},{"month":5,"outsideTemp":13.99,"heatingDays":26,"degreeDayNum":132,"solarIrradianceKwhM2":160,"windSpeedAvg":4.96,"relativeHumidity":70.4,"outsideTempOnHeatingDays":12.95},{"month":6,"outsideTemp":17.5,"heatingDays":16,"degreeDayNum":48,"solarIrradianceKwhM2":164.9,"windSpeedAvg":4.86,"relativeHumidity":70.1,"outsideTempOnHeatingDays":15.14},{"month":7,"outsideTemp":19.51,"heatingDays":10,"degreeDayNum":18,"solarIrradianceKwhM2":162.3,"windSpeedAvg":4.7,"relativeHumidity":70.6,"outsideTempOnHeatingDays":16.14},{"month":8,"outsideTemp":19.2,"heatingDays":10,"degreeDayNum":22,"solarIrradianceKwhM2":140.8,"windSpeedAvg":4.49,"relativeHumidity":69.9,"outsideTempOnHeatingDays":15.94},{"month":9,"outsideTemp":14.32,"heatingDays":25,"degreeDayNum":117,"solarIrradianceKwhM2":91.9,"windSpeedAvg":4.96,"relativeHumidity":75.5,"outsideTempOnHeatingDays":13.42},{"month":10,"outsideTemp":9.09,"heatingDays":30,"degreeDayNum":276,"solarIrradianceKwhM2":56.4,"windSpeedAvg":5.27,"relativeHumidity":80.6,"outsideTempOnHeatingDays":9.05},{"month":11,"outsideTemp":4.13,"heatingDays":30,"degreeDayNum":416,"solarIrradianceKwhM2":27.9,"windSpeedAvg":5.33,"relativeHumidity":85.4,"outsideTempOnHeatingDays":4.13},{"month":12,"outsideTemp":0.04,"heatingDays":31,"degreeDayNum":556,"solarIrradianceKwhM2":18.8,"windSpeedAvg":5.68,"relativeHumidity":85,"outsideTempOnHeatingDays":0.04}],"groundTemp1m":9.38,"groundTemp2m":9.38,"solarIrradianceKwhM2Year":1108.4,"windSpeedAvg":5.23,"relativeHumidityAvg":76.7,"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":"2026-05-19T12:20:29.478Z","attribution":"Weather data by Open-Meteo.com (CC BY 4.0)","legalRef":"PN-B-02403:1982 (climateZone, standardOutsideTemp)","apiVersion":"v1"}}