diff --git a/homeassistant/components/openhardwaremonitor/sensor.py b/homeassistant/components/openhardwaremonitor/sensor.py
index 4ef71a6c75f..30801a59436 100644
--- a/homeassistant/components/openhardwaremonitor/sensor.py
+++ b/homeassistant/components/openhardwaremonitor/sensor.py
@@ -11,6 +11,7 @@ import voluptuous as vol
 from homeassistant.components.sensor import (
     PLATFORM_SCHEMA as SENSOR_PLATFORM_SCHEMA,
     SensorEntity,
+    SensorStateClass,
 )
 from homeassistant.const import CONF_HOST, CONF_PORT
 from homeassistant.core import HomeAssistant
@@ -60,6 +61,8 @@ def setup_platform(
 class OpenHardwareMonitorDevice(SensorEntity):
     """Device used to display information from OpenHardwareMonitor."""
 
+    _attr_state_class = SensorStateClass.MEASUREMENT
+
     def __init__(self, data, name, path, unit_of_measurement):
         """Initialize an OpenHardwareMonitor sensor."""
         self._name = name