After some time i finally prepared beta version of Umbrella Alert application for android. For now it is very simple implementation, probably in future there will be additional features.
Umbrella Alarm informs you if you need to take umbrella. It checks your location and next thanks to openweathermap i check forecast for current day. If there is chance of raining you will get notification on screen with rain sound. Full source code is available on github.
Next few days i will spend on testing it in action.