How to Graph Weather Data

Set up a weather station outside with a thermometer to measure temperature. Use a barometer to determine barometric pressure and a rain gauge to measure rain or snowfall. Use a windsock to measure wind, and a Mason's Hygrometer to measure humidity.

Observe and record the data of the weather station at regular intervals. Use graph paper to track the weather. Label the measurement you are taking down the left-hand side of the paper, such as temperature or barometric pressure. Write the date and time across the top of the paper. Record your measurements under the date.

Create the graph after you have a few points. Draw the x and y axis. Use the x axis--the horizontal one--to mark the dates. Make each line on the y axis represent an increasing measurement interval. Refer to the data collection sheet to find the temperature on a particular date. Mark the temperature for each date with a dot. Use the straightedge to draw a line connecting the dots across the graph. Make a new chart for barometric pressure, humidity and rain or snowfall.