diff --git a/src/graph.js b/src/graph.js
index 84697d4c..d251edcd 100644
--- a/src/graph.js
+++ b/src/graph.js
@@ -5,7 +5,7 @@ import {
 } from './const';
 
 export default class Graph {
-  constructor(width, height, margin, hours = 24, points = 1, aggregateFuncName = 'avg', groupBy = 'interval', smoothing = true, logarithmic = false) {
+  constructor(width, height, margin, hours = 24, points = 1, aggregateFuncName = 'avg', groupBy = 'interval', smoothing = true, logarithmic = false, fillThreshold) {
     const aggregateFuncMap = {
       avg: this._average,
       median: this._median,
@@ -33,6 +33,7 @@ export default class Graph {
     this._logarithmic = logarithmic;
     this._groupBy = groupBy;
     this._endTime = 0;
+    this.fillThreshold = fillThreshold;
   }
 
   get max() { return this._max; }
@@ -184,8 +185,15 @@ export default class Graph {
     });
   }
 
-  getFill(path) {
-    const height = this.height + this.margin[Y] * 4;
+  getFill(path, entityFillThreshold) {
+    let height = this.height + this.margin[Y] * 4;
+    const customThreshold = [this.fillThreshold, entityFillThreshold]
+      .filter(t => typeof t === 'number' && !Number.isNaN(t))
+      .pop();
+    if (customThreshold !== undefined) {
+      const [threshold] = this._calcY([[0, 0, customThreshold]]);
+      [, height] = threshold;
+    }
     let fill = path;
     fill += ` L ${this.width - this.margin[X] * 2}, ${height}`;
     fill += ` L ${this.coords[0][X]}, ${height} z`;
diff --git a/src/main.js b/src/main.js
index f5316210..21638df9 100644
--- a/src/main.js
+++ b/src/main.js
@@ -122,6 +122,7 @@ class MiniGraphCard extends LitElement {
             !entity.entity.startsWith('binary_sensor.'), // turn off for binary sensor by default
           ),
           this.config.logarithmic,
+          this.config.fill_threshold,
         ),
       );
     }
@@ -774,7 +775,8 @@ class MiniGraphCard extends LitElement {
           const line = this.Graph[i].getPath();
           if (config.entities[i].show_line !== false) this.line[i] = line;
           if (config.show.fill
-            && config.entities[i].show_fill !== false) this.fill[i] = this.Graph[i].getFill(line);
+            && config.entities[i].show_fill !== false) this.fill[i] = this.Graph[i]
+            .getFill(line, config.entities[i].fill_threshold);
           if (config.show.points && (config.entities[i].show_points !== false)) {
             this.points[i] = this.Graph[i].getPoints();
           }