Count a Cricket's Chirps
Counting the number of times a cricket chirps can be a surprisingly accurate means to determine the temperature, because a cricket's metabolism changes as the temperature changes.
Count the number of times a cricket chirps in 14 seconds and add 40 to that number. The resulting number should come close to the temperature in Fahrenheit.
20 Surprising Ways to Predict the WeatherFrom coffee cups to crickets, discover these unusual weather predictors