Pest seasons · Texas
The Texas pest calendar, month by month
Texas pest pressure doesn't take much of an off-season. Dallas and Austin run long, hot summers, brief mild winters, and storm-fed springs — fire ants and roaches nearly year-round, an early termite swarm, and a mosquito season stretching from March into November.
What’s active in TX, when
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January
The mildest month still isn't quiet: rodents work attics and garages; fire ant mounds reappear with every warm spell.
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February
Termite season starts early in Texas — first subterranean swarms can fly this month. Inspect before spring proper.
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March
Mosquitoes open with the first warm rains; fire ant colonies surge with spring soil temperatures.
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April
Peak termite swarm window and prime fire ant month. Carpenter ants swarm on humid evenings — ID before treatment.
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May
Storm season fills every container — mosquito populations spike about a week after each big rain. Ticks and fleas climb.
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June
Full summer: mosquito waves, big roaches at foundations, scorpions in garages as it dries out.
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July
Triple-digit heat pushes pests to irrigated yards and cool slabs — roaches, scorpions, and spiders track the moisture line.
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August
Drought concentrates everything: mosquitoes breed in the few wet spots left; indoor roach and scorpion sightings peak.
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September
Fall storms restart the mosquito cycle; fire ants get a second peak as soil temperatures ease.
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October
Still mosquito weather most years. Rodents move toward structures as nights finally cool.
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November
Mosquito season winds down — late some years — while roof rats and mice move on attics and garages.
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December
Rodents rule the short Texas winter; German cockroaches steady indoors; fire ants merely paused.
Calendars describe typical years — weather moves the edges. An early warm spring opens termite and mosquito season sooner; a mild fall stretches it. When in doubt, what you’re seeing at your own home outranks any calendar.
Our local teams in Texas
Seasonal pressure is local — our Texas technicians work these exact patterns on their routes every day:
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Pest control in Austin, TX
Central Texas heat — triple-digit summers, mild winters, drought-and-downpour swings at the edge of the Hill Country
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Pest control in Dallas, TX
Hot — triple-digit summers, mild winters, spring storm systems; drought-and-deluge cycles
Texas pest season questions, answered straight
How long is mosquito season in Texas?
Roughly March through November around Dallas and Austin — among the longest in the country. Populations spike about a week after every major storm, so the season arrives in waves. Standing-water discipline plus service from early spring wins.
When do termites swarm in Texas?
Earlier than most of the country: February through May, typically on warm, humid days after rain. Slab-on-grade homes hide activity well, so swarmer sightings and annual inspections carry extra weight here.
Are fire ants a year-round problem in Texas?
Effectively yes — colonies are active whenever soil temperatures allow, with mound-building peaking in spring and fall. Spot-treating mounds mostly relocates colonies; coordinated yard treatment is what reduces pressure.
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