How to measure the weather Weather Term Means........ Usually given...... Measured using Temperature Exactly how hot or cold it is How heavy the air is How fast the wind is blowing Where the wind is blowing from In Celsius or Fahrenheit In millibars In MPH (like a car) Thermometer As a compass point (N,NW, SW and so on) In millimeters Weather Vane Air Pressure Wind Speed Wind Direction Precipitation Water falling from sky in form of rain, hail, snow Barometer Anemometer Rain Gauge Draw a line from the weather instrument to the description of what it does.