Crickets generally die off in the colder months of fall and winter. In some climates, they may begin to die off as early as late summer or early autumn, but typically their activity will decrease significantly when temperatures drop below 50 degrees Fahrenheit (10°C). In areas with harsher winters, crickets may not survive at all past a certain point. If the temperature drops too low for too long, even hardy species like field crickets can't make it through until spring.