Sorry about the issue. There seems to have been a server error which caused this problem. We’ve fixed the issue and the weather server is back online now. Try again and see if you can get weather update now (for example, rebooting your controller should immediately trigger a weather query).
By the way, for future reference, if this happens again, I would appreciate if someone can submit a support ticket. Generally we check support tickets every day but forum posts much less frequently. Thanks.