getURL () {
		const formatter = new Intl.NumberFormat("en-US", {
			minimumFractionDigits: 6,
			maximumFractionDigits: 6
		});
		const lon = formatter.format(this.config.lon);
		const lat = formatter.format(this.config.lat);
		return `https://opendata-download-metfcst.smhi.se/api/category/pmp3g/version/2/geotype/point/lon/${lon}/lat/${lat}/data.json`;
	}
Get the forecast url for the configured coordinates
@returns {string} the url for the specified coordinates