Hello @jmh2002
It's been nearly 6 years since the developers noted this request, but i can't find any URL link on the website (as a premium member) even though there have been consistent requests for this feature.

It is a bit disappointing that Windy continue to either say "yeah, great idea" and then nothing, or ignore the requests completely.
I am therefore using competitor sites to see if they are as accurate (https://weather-in-calendar.com/ and https://www.meteomatics.com/en/weather-calendar/)
If they prove useful I imagine I'd cancel my Windy.com premium subscription as I would probably start using the Calendar based forecasts so I can see it against my plans for the day (i.e. Windy, raining... change plan from bike ride to bike in the gym, etc etc).