Pest control in Clearlake, CA

Pest season in Clearlake

NOAA's 1991–2020 climate normals for the CLEARLAKE 4 SE, CA station (about 4 miles away) show an average temperature of 56.9°F, about 29.9 inches of precipitation a year spread over roughly 49 days with measurable rain or snow, 72 nights at or below freezing and 66 days reaching 90°F or more. Monthly averages stay at or above 50°F for 8 months of the year, a long warm season for ants, mosquitoes, wasps and other outdoor insects, with a short winter break. Average temperatures are at or above 50°F from about April through November.

Moisture and pests

With about 29.9 inches of precipitation a year, Clearlake is fairly dry. Pests here are often drawn to the water a home provides, such as irrigation, leaks, drains and pet bowls, which is why kitchens, bathrooms and watered landscaping see most of the activity.

Homes and pest entry points

The median year built for housing in Clearlake is 1976, and about 59% of its 7,709 housing units were built before 1980. Homes from this era often have settled foundations, aging weatherstripping and wood trim that can let pests in, and many have crawl spaces or basements worth checking for moisture. About 63% of housing units are single-family detached homes and 23% are mobile homes, whose skirting and crawl spaces are common entry points for rodents and insects.

Services most relevant in Clearlake

• Rodent Controlabout 72 freezing nights a year push mice indoors
• Ant Controlabout 8 months a year average 50°F or more
• Spider Controlspiders follow the insects they feed on into garages, basements and eaves
• Wasp & Hornet Controlnests grow through the warm months (74°F in the warmest month)
• General Pest Controlone call when you are not sure what the pest is

Owners, landlords and tenants

About 60% of occupied homes in Clearlake are owner-occupied and 41% are rented. Homeowners, landlords and property managers can call to be connected; tenants should usually report pest problems to their landlord or property manager first, since leases and local rules often make treatment their responsibility.

Nearby places

Clearlake is in Lake County. Places within about 30 miles include Healdsburg (26 mi), Cloverdale (23 mi), Williams (30 mi), Lakeport (16 mi) and Calistoga (26 mi).

Sources: Census Bureau Vintage 2025 estimate (July 1, 2025) for population; American Community Survey 2020–2024 5-year (tables B25003, B25024, B25034, B25035); 2024 Gazetteer; NOAA NCEI U.S. Climate Normals 1991–2020 (annual and monthly).