We are currently in the process of building out a batch targeting feature that will enable you to apply weather targeting rules to multiple campaigns in one go.
In the meantime, if you are on any of the paid plans we can batch target your campaigns for you at our end, for up to 100 campaigns or ad sets.
All you have to do is create one filter to one campaign or ad set and then send us instructions telling us which of the other campaigns or ad sets you would like the targeting copied across for.
We will then set up a batch targeting process to run and notify you when your weather targeting is live across the board. We usually ask for 24 hours to complete this operation.
If you are on the trial, our advice would be to try WeatherAds with a smaller number of campaigns initially to get a feel for the app, and then switch to a paid plan with a possibility of some custom batch targeting.