Get the forecast weather data from met.no.

def get_forecast(self, time_zone):
        """Get the forecast weather data from met.no."""
        if self.data is None:
            return []

        now = datetime.datetime.now(time_zone).replace(hour=12, minute=0,
                                                       second=0, microsecond=0)
        times = [now + datetime.timedelta(days=k) for k in range(1, 6)]
        return [self.get_weather(_time) for _time in times]