Will I be refunded the purchase price when Apple removes the Darksky app?

No, not automatically. If you need a refund, you must directly request one.

Though discontinuing an App, whose features are being integrated into another App that is free, may not warrant a refund.

click here ➡️ Request a refund for apps or content that you bought from Apple - Apple Support

Not here. Follow the steps in the support document linked below to request a refund.

Link ➡️ Request a refund for apps or content that you bought from Apple - Apple Support

refund ! apple weather is horribly inaccurate to be comical, and it’s Ui doesn’t really work on a phone.