In the Spring, Summer, and Fall, it is unlikely that you’ll find too many mosquitoes humming around midday in the warmer regions of the southeast. You may even feel that mosquito and gnat control isn't necessary! Mosquitoes are most active when the temperatures climb into the 80s, but direct heat can become unbearable for them. During the day, they prefer to lie low away from the sun’s dehydrating rays.
Mosquitoes like to find sheltered places, ideally ones that are humid or have water sources nearby. Tall grasses, thick brush, shallow holes in the ground, hollow logs and trees, and rock shelters are all viable outdoor mosquito campsites. When the mosquitoes are living near human structures, they may choose to take cover in barns, culverts, and even your closet! Almost any dark and protected place will work for them.
There are some species of mosquitoes that are active from dawn until about noon, but most will wait to make an appearance until dusk.