Knowing the temperature has never been easier. This compact 3.5 in. GroundWork Window Thermometer mounts easily on the inside or outside of your window, letting you check the temperature at a glance - indoors or outdoors - whenever you need. Its user-friendly design makes the thermometer ideal for busy mornings when you're deciding what to wear, or for keeping an eye on indoor climate to ensure comfort at all times. Whether you're planning your day, tending to houseplants or simply curious about the weather, this thermometer provides reliable readings you can trust. To install the 3.5 in. window thermometer: moisten the suction cup to ensure it sticks properly to the glass. Gently press the thermometer onto a clean, dry window surface, applying light pressure until the suction cup is firmly attached. For the most accurate readings, it is recommended to choose a location that is not exposed to direct sunlight or other heat sources, as this can affect temperature accuracy. Periodically clean both the suction cup and the glass to maintain a secure hold and clear visibility of the thermometer's display.