diff --git a/homeassistant/components/flo/sensor.py b/homeassistant/components/flo/sensor.py
index 04766c0196a..a5d54386633 100644
--- a/homeassistant/components/flo/sensor.py
+++ b/homeassistant/components/flo/sensor.py
@@ -1,7 +1,11 @@
 """Support for Flo Water Monitor sensors."""
 from __future__ import annotations
 
-from homeassistant.components.sensor import SensorDeviceClass, SensorEntity
+from homeassistant.components.sensor import (
+    SensorDeviceClass,
+    SensorEntity,
+    SensorStateClass,
+)
 from homeassistant.config_entries import ConfigEntry
 from homeassistant.const import (
     PERCENTAGE,
@@ -65,6 +69,7 @@ class FloDailyUsageSensor(FloEntity, SensorEntity):
 
     _attr_icon = WATER_ICON
     _attr_native_unit_of_measurement = VOLUME_GALLONS
+    _attr_state_class: SensorStateClass = SensorStateClass.TOTAL_INCREASING
 
     def __init__(self, device):
         """Initialize the daily water usage sensor."""
@@ -100,6 +105,7 @@ class FloCurrentFlowRateSensor(FloEntity, SensorEntity):
 
     _attr_icon = GAUGE_ICON
     _attr_native_unit_of_measurement = "gpm"
+    _attr_state_class: SensorStateClass = SensorStateClass.MEASUREMENT
 
     def __init__(self, device):
         """Initialize the flow rate sensor."""
@@ -119,6 +125,7 @@ class FloTemperatureSensor(FloEntity, SensorEntity):
 
     _attr_device_class = SensorDeviceClass.TEMPERATURE
     _attr_native_unit_of_measurement = TEMP_FAHRENHEIT
+    _attr_state_class: SensorStateClass = SensorStateClass.MEASUREMENT
 
     def __init__(self, name, device):
         """Initialize the temperature sensor."""
@@ -138,6 +145,7 @@ class FloHumiditySensor(FloEntity, SensorEntity):
 
     _attr_device_class = SensorDeviceClass.HUMIDITY
     _attr_native_unit_of_measurement = PERCENTAGE
+    _attr_state_class: SensorStateClass = SensorStateClass.MEASUREMENT
 
     def __init__(self, device):
         """Initialize the humidity sensor."""
@@ -157,6 +165,7 @@ class FloPressureSensor(FloEntity, SensorEntity):
 
     _attr_device_class = SensorDeviceClass.PRESSURE
     _attr_native_unit_of_measurement = PRESSURE_PSI
+    _attr_state_class: SensorStateClass = SensorStateClass.MEASUREMENT
 
     def __init__(self, device):
         """Initialize the pressure sensor."""
@@ -176,6 +185,7 @@ class FloBatterySensor(FloEntity, SensorEntity):
 
     _attr_device_class = SensorDeviceClass.BATTERY
     _attr_native_unit_of_measurement = PERCENTAGE
+    _attr_state_class: SensorStateClass = SensorStateClass.MEASUREMENT
 
     def __init__(self, device):
         """Initialize the battery sensor."""
diff --git a/tests/components/flo/test_sensor.py b/tests/components/flo/test_sensor.py
index ec044286b0d..0a7cf16ecf5 100644
--- a/tests/components/flo/test_sensor.py
+++ b/tests/components/flo/test_sensor.py
@@ -1,5 +1,6 @@
 """Test Flo by Moen sensor entities."""
 from homeassistant.components.flo.const import DOMAIN as FLO_DOMAIN
+from homeassistant.components.sensor import ATTR_STATE_CLASS, SensorStateClass
 from homeassistant.const import ATTR_ENTITY_ID, CONF_PASSWORD, CONF_USERNAME
 from homeassistant.setup import async_setup_component
 
@@ -18,15 +19,49 @@ async def test_sensors(hass, config_entry, aioclient_mock_fixture):
 
     # we should have 5 entities for the valve
     assert hass.states.get("sensor.current_system_mode").state == "home"
+
     assert hass.states.get("sensor.today_s_water_usage").state == "3.7"
+    assert (
+        hass.states.get("sensor.today_s_water_usage").attributes[ATTR_STATE_CLASS]
+        == SensorStateClass.TOTAL_INCREASING
+    )
+
     assert hass.states.get("sensor.water_flow_rate").state == "0"
+    assert (
+        hass.states.get("sensor.water_flow_rate").attributes[ATTR_STATE_CLASS]
+        == SensorStateClass.MEASUREMENT
+    )
+
     assert hass.states.get("sensor.water_pressure").state == "54.2"
+    assert (
+        hass.states.get("sensor.water_pressure").attributes[ATTR_STATE_CLASS]
+        == SensorStateClass.MEASUREMENT
+    )
+
     assert hass.states.get("sensor.water_temperature").state == "21"
+    assert (
+        hass.states.get("sensor.water_temperature").attributes[ATTR_STATE_CLASS]
+        == SensorStateClass.MEASUREMENT
+    )
 
     # and 3 entities for the detector
     assert hass.states.get("sensor.temperature").state == "16"
+    assert (
+        hass.states.get("sensor.temperature").attributes[ATTR_STATE_CLASS]
+        == SensorStateClass.MEASUREMENT
+    )
+
     assert hass.states.get("sensor.humidity").state == "43"
+    assert (
+        hass.states.get("sensor.humidity").attributes[ATTR_STATE_CLASS]
+        == SensorStateClass.MEASUREMENT
+    )
+
     assert hass.states.get("sensor.battery").state == "100"
+    assert (
+        hass.states.get("sensor.battery").attributes[ATTR_STATE_CLASS]
+        == SensorStateClass.MEASUREMENT
+    )
 
 
 async def test_manual_update_entity(