Swarm of mosquitoes around an evergreen tree at the edge of a field.

When is Mosquito Season?

Mosquitoes remain dormant or die during winter months and can’t function under 50 degrees, so mosquito season varies throughout the country. As the weather warms, you’re probably thinking about vacations, cookouts, and pool days. But all of that fun comes at a price — mosquitoes. Keep reading to find out when mosquito season starts where you live.

Mosquito Season in Different Regions of the US


Mosquito season: February – November


Mosquito season: March – September


Mosquito season: April – September


Mosquito season: May – September

How to Prepare for the Mosquito Season?

Get Rid of Any Standing Water

Mosquitoes seek standing water in which to lay their nearly 300 eggs.

Common places standing water is found include but are not limited to:

  • Buckets
  • Empty Flower Pots
  • Birdbaths
  • Low Spots
  • Clogged Gutters
  • Old Tires

Repair or Install Screens

Install screens on windows and doors to keep mosquitoes from entering your home. If you have any windows or doors that have missing or damaged screens, you should fix them before the weather gets nice enough to have them open. This will not only keep mosquitoes out, but other bugs as well.

Clean & Maintain Your Yard

Tall grass and leaves are the perfect place for mosquitoes to hide from predators and rest. Keeping your lawn free of tall grass (above four inches) and piles of leaves and lawn trimmings will give mosquitoes one less attractive place to hang around. 

Clean Out Your Gutters

Leaves and debris in gutters give mosquitoes an excellent place to take shelter. If left to accumulate, your gutters could clog and create an environment in which mosquitoes can reproduce and overtake. 

Remove Tarps

Tarps provide the perfect protection and humidity for mosquitoes to call home. They can use them to avoid direct sunlight, heavy rain, strong winds, and other creatures that want to eat them. 

When Are Mosquitoes Most Active?

In general, mosquitoes tend to be most active during the warmer months of the year when temperatures are above 50°F (10°C) and humidity levels are high.

Some species of mosquitoes, however, are active year-round in warmer climates, such as those found in tropical regions. On the other hand, some species may become less active during periods of extreme heat or drought. 

As far as time of day, the combination of optimal temperatures, abundant food sources, and available hosts make dawn and dusk the most active times for mosquitoes.

When Is the Best Time to Spray for Mosquitoes?

Spraying for mosquitoes should be done before their populations reach peak levels, as this can help prevent large outbreaks and reduce the overall number of mosquitoes in the area. Their populations usually peak during the hottest and most humid months of the year.

In addition, spraying should be done when mosquitoes are most active, which is typically during the early morning or evening hours.

It’s also important to keep in mind that spraying alone may not be enough to control mosquito populations.

How to Stay Informed About Mosquito Season in Your Area

In many parts of the US, local governments and news channels have “mosquito maps” showing mosquito population density and high-risk areas.

Repel Mosquitoes From Your Home or Business With Sprinkler Magician

The Sprinkler Magician Smart Yard allows you to automate your Mosquito defense, using your existing sprinkler system. Not only can it eliminate biting insects it can also treat your lawn and garden with fertilizers, deer repellents, and even administer organic soil remedies.