High Temperature and Precipitation. The National Oceanic and Atmospheric Administration publishes temperature and precipitation information for cities around the world in Climates of the World. Data on average high temperature (in degrees Fahrenheit) in July and average precipitation (in inches) in July for 48 cities are on the WeissStats site.

For the estimations and predictions, use an average July temperature of 83◦F. For the correlation test, decide whether average high temperature in July and average precipitation in July are linearly correlated.