Best website for weather forecast

Go to weather.com, and enter the location you want the weather for, just like you would at home.

Thanks! I just wanted to make sure there wasn't something better for Europe.

You might want to use something more local. I use metoeswiss for Switzerland. There might be something similar for Austria.

I have found weather channel.com to be just as detailed and accurate elsewhere as here - hourly forecasts (including temps) for 48 hours, 10 day forecasts, 6 hour radar scan, etc.

This is the most accurate 3-day's rain forecast for Austria:
https://www.zamg.ac.at/cms/de/wetter/wetteranimation
It is updated every 6 hours and shows time and date at the bottom, the color is for the intensity.

You must learn a bit about Austria's geography. The map shows the 9 Austrian states (and the surrounding countries).
Where is Vienna? Where is Salzburg?