public function getTemperature($withUnit = false)
    {
        if (!$this->lastResponse || !isset($this->lastResponse['item']['condition']['temp'])) {
            return '';
        }
        $return = $this->lastResponse['item']['condition']['temp'];
        if ($withUnit) {
            $return .= ' '.$this->lastResponse['units']['temperature'];
        }

        return $return;
    }