Anemometerー An anemometer is a device used for measuring wind speed and direction. It is also a common weather station instrument.
Barometerー an instrument measuring atmospheric pressure, used especially in forecasting the weather and determining altitude.
Thermometerー an instrument for measuring and indicating temperature, typically one consisting of a narrow, hermetically sealed glass tube marked with graduations and having at one end a bulb containing mercury or alcohol that expands and contracts in the tube with heating and cooling.
Windvaneー A weather vane, weathervane, wind vane, or weathercock is an instrument used for showing the direction of the wind. It is typically used as an architectural ornament to the highest point of a building.
Rain Gaugeー A rain gauge is an instrument used by meteorologists and hydrologists to gather and measure the amount of liquid precipitation over an area in a predefined period of time. It is used for determining the depth of precipitation that occurs over a unit area and thus measuring rainfall amount.
hope it helps, luv u :)