Weather temperature incorrect in two cities

I think that there is something else that is wrong, not just the use of their service. When I am on their website and supply a city/state and/or location code, it shows the wrong temperature altogether. It seems to be that their weather databases are not working properly, not just how your module accesses their service.

Yes we concluded that also it seams they don't update it anymore

That is exactly what I noticed as well; WeatherLet.com doesn't update their weather data anymore. Is your team planning to update HOT Weather to use a different weather source eventually? It sure is a useful module.