Yep, basically came here to say the same thing. Windy has made a bad decision and should consider reversing it or they will lose a ton of users.
Value add and charge subscription by all means but removing something as basic and prevalent as 10 day forecast and rainfall totals to try and leverage people into subscriptions and you're going to take a significant blow to your reputation and lose users.
Massive shame but another site will see this as an opportunity and will dig deep to compete.
All the best. Look forward to seeing others recommendations for alternatives.