When do subterranean termites typically swarm?

Subterranean termites typically swarm during the warmer months, primarily from late winter to early summer. The swarming period often begins when temperatures reach between 70 to 80 degrees Fahrenheit, which typically occurs from February to June, aligning with the spring season. This behavior is crucial for their mating and establishing new colonies.

While the option presents January through June as the swarming period, it's important to note that the peak activity is often observed in the spring months. Swarming usually coincides with increased warmth and humidity, which makes conditions favorable for the new reproductive termites to take flight and find mates. This behavior also becomes more prevalent after rainfall, which helps them to establish new colonies in moist, suitable environments.

The choice reflects the general understanding of subterranean termite activity and aligns with their biological and environmental needs during the swarming season.