What does the weather forecast of 27- 19 mean?

27 is 27℃, which means the highest temperature, usually around noon. 19 is 19℃, which is the lowest temperature, usually around three or four in the morning ~ If you are afraid of not understanding the weather forecast or those weather symbols in this text, you can check the weather by phone. Call 1258O and the other party will tell you that it won't be misunderstood ~ you can ask directly if you don't understand ~