diff --git a/tests/configs/modules/weather/forecastweather_units.js b/tests/configs/modules/weather/forecastweather_units.js
new file mode 100644
index 00000000..c22335f4
--- /dev/null
+++ b/tests/configs/modules/weather/forecastweather_units.js
@@ -0,0 +1,41 @@
+/* Magic Mirror Test config default weather
+ *
+ * By fewieden https://github.com/fewieden
+ *
+ * MIT Licensed.
+ */
+
+let config = {
+	port: 8080,
+	ipWhitelist: ["127.0.0.1", "::ffff:127.0.0.1", "::1"],
+
+	language: "en",
+	timeFormat: 24,
+	units: "imperial",
+	electronOptions: {
+		webPreferences: {
+			nodeIntegration: true,
+			enableRemoteModule: true
+		}
+	},
+
+	modules: [
+		{
+			module: "weather",
+			position: "bottom_bar",
+			config: {
+				type: "forecast",
+				location: "Munich",
+				apiKey: "fake key",
+				weatherEndpoint: "/forecast/daily",
+				initialLoadDelay: 3000,
+				decimalSymbol: "_"
+			}
+		}
+	]
+};
+
+/*************** DO NOT EDIT THE LINE BELOW ***************/
+if (typeof module !== "undefined") {
+	module.exports = config;
+}
diff --git a/tests/e2e/modules/weather_spec.js b/tests/e2e/modules/weather_spec.js
index cd386f3c..bf7d9af2 100644
--- a/tests/e2e/modules/weather_spec.js
+++ b/tests/e2e/modules/weather_spec.js
@@ -164,7 +164,7 @@ describe("Weather module", function () {
 				return getText(".weather .normal.medium span:nth-child(2)", "6 WSW") && getText(".weather .large.light span.bright", "34,7°") && getText(".weather .normal.medium.feelslike span.dimmed", "Feels like 22,0°");
 			});
 
-			it("should render decimalSymbol = ','", async function () {
+			it("should render custom decimalSymbol = ','", async function () {
 				const weather = generateWeather({
 					main: {
 						temp: (1.49 * 9) / 5 + 32,
@@ -274,5 +274,22 @@ describe("Weather module", function () {
 				expect(rows.length).to.be.equal(5);
 			});
 		});
+
+		describe("Forecast weather units", function () {
+			before(function () {
+				process.env.MM_CONFIG_FILE = "tests/configs/modules/weather/forecastweather_units.js";
+			});
+
+			it("should render custom decimalSymbol = '_'", async function () {
+				const weather = generateWeatherForecast();
+				await setup({ template, data: weather });
+
+				const temperatures = ["24_4°", "21_0°", "22_9°", "23_4°", "20_6°"];
+
+				for (const [index, temp] of temperatures.entries()) {
+					await getText(`.weather table.small tr:nth-child(${index + 1}) td:nth-child(3)`, temp);
+				}
+			});
+		});
 	});
 });