Weather factorsVersión en línea Activity to study the weather factors. por Raquel Serrano Barrueta 1 Factor 1 2 Factor 2 3 Factor 3 4 Factor 4 Wind It's moving air. We use an anemometer to measure wind speed. Water that falls to the ground from the atmosphere. To measure this, we use a rain gauge. Precipitation We use a thermometer to measure this. It can be measured in Celsius / Centigrade or Fahrenheit degrees. A measure of how hot or cold the air is. Temperature We use a hygrometer to measure this. It describes how much water vapour is present in the air. Humidity