You will have to select the token uri and id like this:
await Homey.flowToken.getFlowTokens().then(function(tokens) {
for (let token in tokens) {
if ( tokens[token].uri == "homey:manager:weather" && tokens[token].id == "state" ) {
var mytoken = tokens[token].value;
console.log(mytoken);
}
}
}).catch(console.error);