Historical daily weather for any coordinate (ERA5 reanalysis, 1940→~5 days ago). Pass lat + lon + start + end (YYYY-MM-DD, range ≤366 days). Returns per-day max/min/mean temperature (°C), precipitation total (mm) + hours, and max wind (km/h). Source: Open-Meteo archive / ECMWF ERA5 (keyless).