Santa Clara County, California
Gutter cleaning, repair and new gutters in Gilroy, CA
Gilroy gets about 20 inches of rain in a normal year, and on about 5 days a year an inch or more falls in a single day. The wettest season is winter (December to February), with about 12.5 inches; the driest is summer (June to August), with 0.2. Every 1,000 square feet of roof sheds about 12,300 gallons a year, and all of it goes through the gutters.
Call (866) 228-6229 free call to a gutter contractor serving GilroyGilroy: rain and roofs
NOAA station USC00043417, 1 miBars to one scale; the longest is winter (December to February).
For days with an inch of rain or more, Gilroy ranks near the middle of the 939 places in California on this site (4.8 a year). By house age it falls among the newest by median year built of the 938 places in California on this site (half built by 1990). By its first fall frost it sits near the middle of the 507 places in California on this site (November 27).
When to clean gutters in Gilroy
The first fall frost comes around November 27 in a typical year here, and the last spring frost around February 24 (median dates, NOAA normals). Plan the fall visit for after the frost, when the trees over the roof have finished dropping, and the spring visit for after the pollen and catkins.
When to clean gutters explains how the trees over a roof change the schedule.
Gutter and downspout size for Gilroy rain
What overwhelms a gutter is a burst, not a season. In Gilroy the five-minute rain expected about once in ten years falls at 3.07 inches an hour (NOAA Atlas 14 Volume 6). At that rate one 2-by-3-inch downspout drains about 2,350 square feet of roof and one 3-by-4-inch downspout about 4,690, by the rule in the Copper Development Association’s design handbook. Try your own roof in the gutter and downspout calculator, which starts from this figure.
The houses in Gilroy
Half the homes in Gilroy were built by 1990, 36% before 1980 (ACS 2020–2024). In a neighborhood that age, many houses are on their second set of gutters or due for one, and the fascia board behind them is worth checking at the same visit.
63% of households own their home, and 71% of homes are detached houses, 6% townhouses. In a townhouse or HOA community, check who owns the gutters and what colors are allowed before booking.
Hiring in California
Ask any contractor working in Gilroy what California requires of them for gutter work, and to show proof of insurance. Hiring a gutter contractor
In California’s fire hazard severity zones, the 2025 Wildland-Urban Interface Code (in force January 1, 2026) requires gutters and downspouts of noncombustible material, and gutters fitted with an approved means to keep leaves and debris from collecting (section 504.4). (2025 California Wildland-Urban Interface Code, Chapter 5 (UpCodes))
Gutter work in Gilroy
In a neighborhood with half its homes built by 1990, the usual calls are cleaning, guards and small repairs. The line takes all of it: