Unpredictable Spring Weather & Mosquito Activity: What’s Happening?

This spring has brought an unusual pattern of on-and-off snow, fluctuating temperatures, and rapid weather changes. Many residents are noticing mosquitoes during warmer days—only for activity to slow again when temperatures drop. Here’s what’s going on and how we are responding.

How Does This Weather Affect Mosquitoes?

Mosquito activity is closely tied to temperature. During warmer days, overwintered mosquitoes become active and begin seeking blood meals. However, when temperatures drop again—such as during late snow events or cold snaps—their activity slows or temporarily stops.

This “start-and-stop” pattern can make mosquito activity feel unpredictable:

• Warm days → Mosquitoes become active
• Cold days/snow → Activity drops off

Even though activity may pause, mosquitoes are still present and will become active again as soon as temperatures rise.

Why Isn’t Fogging Happening Yet?

Fogging requires consistent, suitable weather conditions to be effective. With the current pattern of fluctuating temperatures:

• Cold conditions reduce the effectiveness of fogging
• Frequent weather changes make timing treatments difficult

In addition, our treatment season is regulated, and operations typically begin in April when conditions are more stable.

What We Are Doing Right Now

Even though widespread fogging has not yet begun, our staff is actively working in the field. Current efforts include:

• Larviciding: Treating standing water where mosquito larvae develop
• Inspecting breeding sites: Identifying areas where mosquitoes are emerging
• Monitoring activity levels: Tracking how weather patterns are affecting populations
• Continuing equipment preparation: Ensuring fogging units are ready as soon as conditions allow

These early-season efforts are critical in reducing the next generation of mosquitoes.

How You Can Help

Community involvement is especially important during unpredictable weather patterns.

• Check your property for standing water
  Even small ponds, containers, or low areas can produce mosquitoes
• Let us know about water sources
  If you have ponds, drainage areas, or standing water on your property, please contact us—we may be able to assist
• Report mosquito activity
  Continue using our online reporting form to let us know where mosquitoes are active so we can prioritize our response

Working Together Through a Changing Season

This type of spring weather is not typical, and it presents unique challenges for mosquito control. While mosquitoes may seem to come and go with each temperature swing, our team is actively working behind the scenes to stay ahead of the season.

As conditions stabilize, we will expand our control efforts and begin fogging operations as soon as it is effective and permitted.

Thank you for your continued patience and for helping us monitor mosquito activity in the community.