The 14-day forecasts are compiled from several numerical weather models — ECMWF (European), GFS (American) and ICON (German) — with statistical correction against local observations. Reliability: about 85 % for days 1-3, about 70 % for days 4-7, about 55 % for days 8-14. For days 15-30 we synthesise with climate normals — see
the long-range forecast.