Several independent developers have made third-party client libraries for the various met.no APIs. We take no responsibility for the functionality of these (in fact we know some of them are broken!). Also, at the time of writing all of these using Locationforecast depend on the deprecated 1.9 version; these must be updated to 2.0 before 2021 to continue working. Please contact the developers directly if you have any issues.
The official MET Norway code repo can be found at https://github.com/metno.
Note that most of these use the deprecated Locationforecast/1.9 which will be removed by the end of 2020, and need to be updated to use Locationforecast/2.0.
—Geir Aalberg, 14 April 2020