I had made a mistake in the weather script which was applying rain adjustment to the scale for users not using weather adjustments. We patched this last night and the issue should no longer persist.
I apologize for the inconvenience this may have caused. If you are still having the issue please let us know.
Update: Here is the code change: https://github.com/OpenSprinkler/OpenSprinkler-Weather/commit/58bc020f3408798c4510385090e2d37836d4d8a5