{"location":{"city":"Modła","voivodeship":"Mazowieckie","community":"Ciechanów","postalCode":"06-445","latitude":52.8989,"longitude":20.4404,"elevation":123},"climateZone":3,"standardOutsideTemp":-20,"annualMeanTemp":8.4,"monthly":[{"month":1,"outsideTemp":-2.02,"heatingDays":31,"degreeDayNum":620,"solarIrradianceKwhM2":22,"windSpeedAvg":5.91,"relativeHumidity":86.1,"outsideTempOnHeatingDays":-2.02},{"month":2,"outsideTemp":-1.01,"heatingDays":28,"degreeDayNum":537,"solarIrradianceKwhM2":40,"windSpeedAvg":5.84,"relativeHumidity":83.4,"outsideTempOnHeatingDays":-1.01},{"month":3,"outsideTemp":2.43,"heatingDays":31,"degreeDayNum":482,"solarIrradianceKwhM2":82.8,"windSpeedAvg":5.86,"relativeHumidity":77.2,"outsideTempOnHeatingDays":2.43},{"month":4,"outsideTemp":8.26,"heatingDays":29,"degreeDayNum":292,"solarIrradianceKwhM2":127.2,"windSpeedAvg":5.28,"relativeHumidity":71.3,"outsideTempOnHeatingDays":8.16},{"month":5,"outsideTemp":13.39,"heatingDays":27,"degreeDayNum":148,"solarIrradianceKwhM2":162.2,"windSpeedAvg":5.14,"relativeHumidity":71,"outsideTempOnHeatingDays":12.55},{"month":6,"outsideTemp":16.83,"heatingDays":19,"degreeDayNum":59,"solarIrradianceKwhM2":165.1,"windSpeedAvg":5.05,"relativeHumidity":71.1,"outsideTempOnHeatingDays":14.94},{"month":7,"outsideTemp":18.97,"heatingDays":12,"degreeDayNum":24,"solarIrradianceKwhM2":163.7,"windSpeedAvg":4.89,"relativeHumidity":72,"outsideTempOnHeatingDays":16.1},{"month":8,"outsideTemp":18.65,"heatingDays":13,"degreeDayNum":27,"solarIrradianceKwhM2":138.5,"windSpeedAvg":4.71,"relativeHumidity":71.1,"outsideTempOnHeatingDays":15.98},{"month":9,"outsideTemp":13.92,"heatingDays":26,"degreeDayNum":126,"solarIrradianceKwhM2":88.7,"windSpeedAvg":5.15,"relativeHumidity":76.4,"outsideTempOnHeatingDays":13.28},{"month":10,"outsideTemp":8.57,"heatingDays":31,"degreeDayNum":292,"solarIrradianceKwhM2":52.4,"windSpeedAvg":5.5,"relativeHumidity":81.8,"outsideTempOnHeatingDays":8.56},{"month":11,"outsideTemp":3.67,"heatingDays":30,"degreeDayNum":429,"solarIrradianceKwhM2":23.6,"windSpeedAvg":5.53,"relativeHumidity":87.1,"outsideTempOnHeatingDays":3.67},{"month":12,"outsideTemp":-0.29,"heatingDays":31,"degreeDayNum":567,"solarIrradianceKwhM2":15.4,"windSpeedAvg":5.68,"relativeHumidity":87.1,"outsideTempOnHeatingDays":-0.29}],"groundTemp1m":9.06,"groundTemp2m":9.06,"solarIrradianceKwhM2Year":1081.6,"windSpeedAvg":5.38,"relativeHumidityAvg":78,"suitability":{"score":61,"rating":"fair","color":"yellow","estimatedScop":4.1,"notes":["Wysokie nasłonecznienie — bardzo dobre warunki dla hybrydy pompa ciepła + PV.","Wysoka średnia prędkość wiatru (5.4 m/s) — większe straty przez infiltrację."]},"_meta":{"source":"OPEN_METEO_ERA5_LAND_1991_2020","sourceLabel":"ERA5-Land Reanalysis (1991–2020)","fetchedAt":"2026-05-19T12:17:42.510Z","attribution":"Weather data by Open-Meteo.com (CC BY 4.0)","legalRef":"PN-B-02403:1982 (climateZone, standardOutsideTemp)","apiVersion":"v1"}}