from the 2003 Farmer's Almanac:

>Yeah, But Can A CRICKET Convert to Celsius?

You've probably heard this one, but it's worth repeating: How can you determine the local air temperature listening to a cricket? Count the number of cricket chirps in 14 seconds and then add 40. The number will give you the air temperature in degrees Fahrenheit. On the other hand, we know that at 60 degrees Fahrenheit, a cricket will chirp 72 times per minute. So, for every four chirps less than 72, subtract a degree from 60°F, and for every four additional chirps, add a degree to 60°F. Got it?


--from The Handy Weather Answer Book, by Walter A. Lyons, PH.D.<