As of the 16th of February the updated WeatherMo App is available for download in the AppStore.
The previous version of the App had a bug in the Daily forecast due to a change in the OpenWeatherMap forecast data.
The issue if fixed now and together with some minor fixes due to iOS 7.0.4 the App is available again.
Enjoy WeatherMo again and please give me feedback as soon as you run into issues.
Regards,
Ron Hendriks