diff --git a/homeassistant/components/binary_sensor/bloomsky.py b/homeassistant/components/binary_sensor/bloomsky.py
new file mode 100644
index 00000000000..3f18af03013
--- /dev/null
+++ b/homeassistant/components/binary_sensor/bloomsky.py
@@ -0,0 +1,69 @@
+"""
+Support the binary sensors of a BloomSky weather station.
+
+For more details about this component, please refer to the documentation at
+https://home-assistant.io/components/binary_sensor.bloomsky/
+"""
+import logging
+
+from homeassistant.components.binary_sensor import BinarySensorDevice
+from homeassistant.loader import get_component
+
+DEPENDENCIES = ["bloomsky"]
+
+# These are the available sensors mapped to binary_sensor class
+SENSOR_TYPES = {
+    "Rain": "moisture",
+    "Night": None,
+}
+
+
+def setup_platform(hass, config, add_devices, discovery_info=None):
+    """Set up the available BloomSky weather binary sensors."""
+    logger = logging.getLogger(__name__)
+    bloomsky = get_component('bloomsky')
+    sensors = config.get('monitored_conditions', SENSOR_TYPES)
+
+    for device in bloomsky.BLOOMSKY.devices.values():
+        for variable in sensors:
+            if variable in SENSOR_TYPES:
+                add_devices([BloomSkySensor(bloomsky.BLOOMSKY,
+                                            device,
+                                            variable)])
+            else:
+                logger.error("Cannot find definition for device: %s", variable)
+
+
+class BloomSkySensor(BinarySensorDevice):
+    """ Represents a single binary sensor in a BloomSky device. """
+
+    def __init__(self, bs, device, sensor_name):
+        """Initialize a bloomsky binary sensor."""
+        self._bloomsky = bs
+        self._device_id = device["DeviceID"]
+        self._sensor_name = sensor_name
+        self._name = "{} {}".format(device["DeviceName"], sensor_name)
+        self._unique_id = "bloomsky_binary_sensor {}".format(self._name)
+        self.update()
+
+    @property
+    def name(self):
+        """The name of the BloomSky device and this sensor."""
+        return self._name
+
+    @property
+    def unique_id(self):
+        """Unique ID for this sensor."""
+        return self._unique_id
+
+    @property
+    def is_on(self):
+        """If binary sensor is on."""
+        return self._state
+
+    def update(self):
+        """Request an update from the BloomSky API."""
+        self._bloomsky.refresh_devices()
+
+        self._state = \
+            self._bloomsky.devices[self._device_id]["Data"][self._sensor_name]
diff --git a/homeassistant/components/sensor/bloomsky.py b/homeassistant/components/sensor/bloomsky.py
index 902b42d6e3f..89aeeb9bb3f 100644
--- a/homeassistant/components/sensor/bloomsky.py
+++ b/homeassistant/components/sensor/bloomsky.py
@@ -1,6 +1,4 @@
 """
-homeassistant.components.sensor.bloomsky
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 Support the sensor of a BloomSky weather station.
 
 For more details about this component, please refer to the documentation at
@@ -8,6 +6,7 @@ https://home-assistant.io/components/sensor.bloomsky/
 """
 import logging
 
+from homeassistant.const import TEMP_FAHRENHEIT
 from homeassistant.helpers.entity import Entity
 from homeassistant.loader import get_component
 
@@ -16,14 +15,12 @@ DEPENDENCIES = ["bloomsky"]
 # These are the available sensors
 SENSOR_TYPES = ["Temperature",
                 "Humidity",
-                "Rain",
                 "Pressure",
                 "Luminance",
-                "Night",
                 "UVIndex"]
 
 # Sensor units - these do not currently align with the API documentation
-SENSOR_UNITS = {"Temperature": "°F",
+SENSOR_UNITS = {"Temperature": TEMP_FAHRENHEIT,
                 "Humidity": "%",
                 "Pressure": "inHg",
                 "Luminance": "cd/m²"}
@@ -34,14 +31,13 @@ FORMAT_NUMBERS = ["Temperature", "Pressure"]
 
 # pylint: disable=unused-argument
 def setup_platform(hass, config, add_devices, discovery_info=None):
-    """ Set up the available BloomSky weather sensors. """
-
+    """Set up the available BloomSky weather sensors."""
     logger = logging.getLogger(__name__)
     bloomsky = get_component('bloomsky')
+    sensors = config.get('monitored_conditions', SENSOR_TYPES)
 
-    for device_key in bloomsky.BLOOMSKY.devices:
-        device = bloomsky.BLOOMSKY.devices[device_key]
-        for variable in config["monitored_conditions"]:
+    for device in bloomsky.BLOOMSKY.devices.values():
+        for variable in sensors:
             if variable in SENSOR_TYPES:
                 add_devices([BloomSkySensor(bloomsky.BLOOMSKY,
                                             device,
@@ -51,56 +47,45 @@ def setup_platform(hass, config, add_devices, discovery_info=None):
 
 
 class BloomSkySensor(Entity):
-    """ Represents a single sensor in a BloomSky device. """
+    """Represents a single sensor in a BloomSky device."""
 
     def __init__(self, bs, device, sensor_name):
+        """Initialize a bloomsky sensor."""
         self._bloomsky = bs
         self._device_id = device["DeviceID"]
-        self._client_name = device["DeviceName"]
         self._sensor_name = sensor_name
-        self._state = self.process_state(device)
-        self._sensor_update = ""
+        self._name = "{} {}".format(device["DeviceName"], sensor_name)
+        self._unique_id = "bloomsky_sensor {}".format(self._name)
+        self.update()
 
     @property
     def name(self):
-        """ The name of the BloomSky device and this sensor. """
-        return "{} {}".format(self._client_name, self._sensor_name)
+        """The name of the BloomSky device and this sensor."""
+        return self._name
+
+    @property
+    def unique_id(self):
+        """Unique ID for this sensor."""
+        return self._unique_id
 
     @property
     def state(self):
-        """ The current state (i.e. value) of this sensor. """
+        """The current state (i.e. value) of this sensor."""
         return self._state
 
     @property
     def unit_of_measurement(self):
-        """ This sensor's units. """
+        """Return the sensor units."""
         return SENSOR_UNITS.get(self._sensor_name, None)
 
     def update(self):
-        """ Request an update from the BloomSky API. """
+        """Request an update from the BloomSky API."""
         self._bloomsky.refresh_devices()
-        # TS is a Unix epoch timestamp for the last time the BloomSky servers
-        # heard from this device. If that value hasn't changed, the value has
-        # not been updated.
-        last_ts = self._bloomsky.devices[self._device_id]["Data"]["TS"]
-        if last_ts != self._sensor_update:
-            self.process_state(self._bloomsky.devices[self._device_id])
-            self._sensor_update = last_ts
 
-    def process_state(self, device):
-        """ Handle the response from the BloomSky API for this sensor. """
-        data = device["Data"][self._sensor_name]
-        if self._sensor_name == "Rain":
-            if data:
-                self._state = "Raining"
-            else:
-                self._state = "Not raining"
-        elif self._sensor_name == "Night":
-            if data:
-                self._state = "Nighttime"
-            else:
-                self._state = "Daytime"
-        elif self._sensor_name in FORMAT_NUMBERS:
-            self._state = "{0:.2f}".format(data)
+        state = \
+            self._bloomsky.devices[self._device_id]["Data"][self._sensor_name]
+
+        if self._sensor_name in FORMAT_NUMBERS:
+            self._state = "{0:.2f}".format(state)
         else:
-            self._state = data
+            self._state = state