The variety of Upper Austria´s geography has led to different climatic regions.

The most arid areas are to be found in eastern Mühlviertel Region and in the Eferding Basin, with an annual rainfall often less than 800 mm. The Alpine region has the characteristic features of the Alpine climate with an annual precipitation of 1,000 mm. The Dachstein massif belongs to the transitional continental climatic zone (wet, annual precipitation of up to 3,000 mm, depending on location, exposure and altitude).

Upper Austria´s warmest area is the Linz Basin, featuring an annual mean temperature of 9° C. The major part of the Alpine foothills and the Alps have an annual mean temperature of 8° C. At higher altitudes, 2,000 meters above sea level, the mean temperature is 1° C only.