of the Upper Silesian metropolitan area. Climate Bielsko-Biała has an oceanic climate (Köppen :Cfb) with cold, damp winters and warm, wet summers. However, using the 0 °C isotherm, the climate is a Dfb-type called of humid continental climate, which explains its considerable thermal amplitude for Central Europe. The extremes may still be moderated by the western patterns and winds of this direction, which still maintains hybrid characteristics in the city's climate. Foëhn winds help maintain a milder winter in Bielsko-Biała and average about 4 °C lower than the surrounding mountains each year. The sunniest days are between late summer and early fall, with a few months reaching 9 sunny days. In the 1960s 55 cm of snow cover was recorded. Economy and industry Bielsko-Biała is one of the most business friendly medium size cities in Poland. In the 2014 ranking of the 'Most Attractive Cities for Business' published yearly by Forbes the city was ranked 3rd in the category of cities with 150,000–300,000 inhabitants. About 2% of people are unemployed (compared to 5.8% for Poland). Bielsko-Biała is known for its textile, machine-building, and especially automotive industry. FCA Poland, a subsidiary of Stellantis, has a car factory based in the city. Four areas in the city belong to the Katowice Special Economic Zone. The city region is a home for several manufacturers of high-performance gliders and aircraft including Margański & Mysłowski, a local producer and designer of business long range small aircraft. The labor market in the city shows deficits in the workforce in such professions as: construction workers, operators of construction machines, electricians, electromechanics, dressmakers, couriers. Transport Road transport Bielsko-Biała is located within a short distance to Czech and Slovakian borders on the crossroads of two Expressways (S1 and S52) connecting Poland with Southern Europe: Expressway S1 connects the city with Slovakia via the border town Zwardoń. Expressway S52 connects the city with the Czech Republic via the border town Cieszyn. Bielsko-Biała is connected with the rest of Poland by the dual carriageway DK1 road running to Tychy where it intersects the Expressway S1 and further to Katowice where it intersects the Motorway A4. It is planned to extend S1 north along the existing dual carriageway DK1 from Bielsko-Biała to Tychy and Katowice, thus building an expressway connection of the city with the national motorway network of Poland. National Road DK52 connects Bielsko-Biała with Kraków in the east. The most