Native weather app and iOS 12

iOS and iPadOS

Hello All,
Has anyone here noticed that the native weather app is a little quirky under iOS12? I find that if the weather app has been used earlier in the day and then I use it later to step through the hourrly forecast then the temperature for a given time is omitted by vo. Similarly, the word sunrise or sunset is also omittedd by vo. If I select a different city then it works as expected. Now if I move back to the original city then things also now work as expected.
Not a show stopper but I should maybe stick with Weather Gods instead!