Google calendar with weather loookout

What if? What if Google Calendar would allow to show us a lookout or weather forecast for the next 15 days?
Sometimes I find myself debating on booking a meeting, attending a sport game, going to a BBQ because I don’t know what the weather might look like. I glance at the calendar and I end up looking up the 15 days forecast from weather sources to make a decision.

Here is what I propose: a layer can be turn on to show weather condition by using colors, numbers, symbols, etc.  Google can partner up with local weather stations to provide local deals, etc. There is great potential I believe.