Does not seem accurate. This is telling me it snowed 1.33cm on June 17, 2022 in New York City.
https://api.open-meteo.com/v1/forecast?latitude=40.71&longit...
https://api.open-meteo.com/v1/forecast?latitude=40.71&longit...
Temperature, clouds, etc, seem fine
EDIT: Issue identified and will be fixed in the next days! Thanks!