We now know what to measure in order to make weather observations but what should we do with those measurements?  In this final part we activities that involve watching the weather.  These projects can be as short as a day or as long as a lifetime and can provide valuable information to meteorologists worldwide.

In this part we talk about three more weather observations that we can make, wind speed, direction and the duration of sunlight.  Making these measurements are a little more involved and good for someone looking for a project as commercial instrumentation is likely to be out of the price range of most people.  These measurements round out the observations that we have previously discussed and help with making a complete record of the daily weather.

We left off our discussion of the weather talking about recording rainfall and the temperature.  We continue our discussion talking about barometric pressure and relative humidity.  These two parameters can tell us much about the direction the weather is heading, whether we will have fair skies or rainy nights. 

If you watch the morning or evening news, unless there is a major tragedy occurring you probably are most interested in the weather forecast.  In our modern world the weather can have much larger effects than whether you have your picnic in the park or you take the umbrella with you when you go out.  Strong storms can cause travel delays and even devastate cities.  Too much or too little rain or cold can damage crops.  Even excessive heat can cause illness and death.  What can we learn about the weather?