Cory Monteith, who died aged 31 in a Vancouver hotel, was dating 'Glee' co-star Lea Michele.
In April, a representative for the Canadian actor said he was at a rehabilitation facility for an unspecified substance addiction.
Michele told People magazine at the time that she loved and supported her boyfriend and was proud he was seeking help.
More top news
In a tweet on Saturday, the US president didn't give a reason for his absence but said he wished"everyone well and have a great evening".
Weather conditions remain wet and windy through the weekend.
Mr Banks has given Ukip leader Paul Nuttall an "ultimatum", saying if he is not made chairman he will stop supporting the party.