Adding 37 to the number of times a cricket chirps in 15 seconds will gve you the current temperature

Crickets can actually be used to tell the temperature. If you hear crickets chirping outside at night, or in the day, count how many times an individual cricket chirps in 15 seconds. Take that number of how many times a cricket chirps in 15 seconds, add 37, and that will give you the current temperature in Fahrenheit. While it is not an exact science, cricket's increase their chirping the warmer it is outside and decrease their chirps when it is cold.