Napa County, California
Gutter cleaning, repair and new gutters in Napa, CA
A normal year in Napa brings about 27 inches of rain; on roughly 7 of its days, an inch or more comes down at once. The wettest season is winter (December to February), with about 15.6 inches; the driest is summer (June to August), with 0.3. That is about 16,500 gallons a year off each 1,000 square feet of roof, every drop of it through a gutter and a downspout.
Call (866) 228-6229 free call to a gutter contractor serving NapaNapa: rain and roofs
NOAA station USC00046074, 2 miBars to one scale; the longest is winter (December to February).
Counting days with an inch of rain or more, Napa sits 208th for heavy-rain days of the 939 places in California on this site (7.2 a year). By house age it falls near the middle of the 938 places in California on this site (half built by 1975). By its first fall frost it sits near the middle of the 507 places in California on this site (December 4).
When to clean gutters in Napa
The first fall frost comes around December 4 in a typical year here, and the last spring frost around February 12 (median dates, NOAA normals). Booking the fall cleaning after the first frost, once the trees over the roof are bare, catches the season’s drop in one visit; the spring cleaning comes after the pollen and catkins are down.
When to clean gutters explains how the trees over a roof change the schedule.
Gutter and downspout size for Napa rain
The short, hard downpour is what a gutter is sized for. In Napa the five-minute rain expected about once in ten years falls at 2.70 inches an hour (NOAA Atlas 14 Volume 6). At that rate one 2-by-3-inch downspout drains about 2,670 square feet of roof and one 3-by-4-inch downspout about 5,330, 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 Napa
Half the homes in Napa were built by 1975, 61% before 1980 (ACS 2020–2024). Houses that age have often had their gutters replaced once already; if not, the original runs and the boards behind them deserve a close look. On a house built before 1978, replacing more than 20 square feet of painted fascia or trim falls under the EPA’s lead-safe rule, so ask whether the crew is certified.
58% of households own their home, and 62% of homes are detached houses, 7% townhouses. In a townhouse or HOA community, check who owns the gutters and what colors are allowed before booking.
Hiring in California
Licensing for gutter work differs from state to state; ask a contractor in Napa which license or registration they hold in California, and for proof of liability 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 Napa
With half the homes built by 1975, replacement gutters and the fascia behind them come up more often here than in newer suburbs. The line takes all of it: