This paper presents research on the metaphorical use of the so-called "weather expressions" in describing positive and negative phenomena. The peculiarities of these expressions have already been noted in other branches of linguistics (for example, in syntax), and authors in that field point to the importance of researching the metaphorical use of these expressions as well. Considering that the weather is an experience shared by all people and that some metaphors are based on common experiences, this research can offer insights into the universality of conceptual metaphors. With this universality in mind, the metaphorical use of expressions in Swedish is compared to that in Croatian, based on corpus research. The results of the research provide insights into the metaphorical use of four weather expressions in each language. In each language, two expressions for bad weather (e.g., in Croatian, hladnoća (“cold”) and oluja (“storm”)) and two for nice weather (sunce (“sun”) and toplina (“warmth”)) were selected. The analysis of 1200 segments (150 per expression) showed that there are some common characteristics in the metaphorical use of these expressions. From these common characteristics, it was evident that the metaphorical uses are motivated by shared conceptual metaphors. Ultimately, based on these conceptual metaphors, it was possible to compare Swedish and Croatian. This revealed, for example, that expressions for good weather are most often used to describe positive phenomena (and vice versa). The research also showed that there are some differences between the two languages, such as the frequency of metaphorical use of certain expressions, but also in the consistency of using expressions for bad weather to describe negative phenomena. In Swedish, for instance, some expressions for bad weather can be used to describe neutral (and even positive) phenomena.