Elements of the Weather

The weather is made up of different elements, which are measured either by special instruments or are observed by a meteorologist. These measurements are then recorded and used in the making of climate graphs and weather forecasts.

The table below shows the weather element details.

ElementDescriptionHow it is measuredUnits of measurement
PrecipitationMoisture from the sky e.g. rain, snow etc.By a Rain GaugeMillimetres (mm.)
TemperatureHow hot or cold it isBy Thermometers, found inside a Stevenson ScreenDegrees celsius ( c)
Wind SpeedHow fast the wind is blowingBy an AnemometerKnots, or by the Beaufort Scale
Wind DirectionWhere the wind is blowing fromBy a Wind VanePoints of the compass (north, north-west etc), or bearing in degrees
ElementDescriptionHow it is measuredUnits of measurement
HumidityThe amount of water vapour in the airBy a Hygrometer (wet and Dry Bulb Thermometers)Relative Humidity (% of water vapour that can be held by the air at the actual temperature)
Air PressureThe "weight" of the air pushing on the surface of the EarthBy a BarometerHectopascals (although most people know it as millibars)
Cloud CoverThe amount of cloud in the skyIt is observed by a meteorologistOktas - eighths of the sky
VisibilityHow far you can seeIt is observed by a meteorologistKilometres
SunshineThe hours of sunshineBy a Sunshine RecorderHours and minutes
ElementDescriptionHow it is measuredUnits of measurement