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Gutter cleaning, repair and new gutters in Harbison Canyon, CA

A normal year in Harbison Canyon brings about 16 inches of rain; on roughly 4 of its days, an inch or more comes down at once. The wettest season is winter (December to February), with about 8.9 inches; the driest is summer (June to August), with 0.3. Every 1,000 square feet of roof sheds about 10,000 gallons a year, and all of it goes through the gutters.

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Harbison Canyon: rain and roofs

NOAA station USC00040136, 4 mi
16.1 in
Rain in a normal year, Harbison Canyon
NOAA normal, ALPINE
3.9
Days with an inch or more
a year
10,000 gal
Water off 1,000 sq ft of roof in Harbison Canyon
0.62 gal per sq ft per inch
2.99 in/hr
5-minute downpour, once in 10 years
NOAA Atlas 14 Volume 6
1985
Median year homes were built
ACS 2020–2024
41%
Homes built before 1980
ACS 2020–2024
Winter8.9 in
Spring4.5 in
Summer0.3 in
Fall2.3 in

Bars to one scale; the longest is winter (December to February).

For days with an inch of rain or more, Harbison Canyon ranks near the middle of the 939 places in California on this site (3.9 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 1985).

When to clean gutters in Harbison Canyon

Frost is rare in Harbison Canyon, and in many years there is none (NOAA normals). With no hard freeze to strip the trees, the fall cleaning follows the leaf drop itself; book it once the trees over the roof are bare, and plan a second visit in spring.

When to clean gutters explains how the trees over a roof change the schedule.

Gutter and downspout size for Harbison Canyon rain

What overwhelms a gutter is a burst, not a season. In Harbison Canyon the five-minute rain expected about once in ten years falls at 2.99 inches an hour (NOAA Atlas 14 Volume 6). At that rate one 2-by-3-inch downspout drains about 2,410 square feet of roof and one 3-by-4-inch downspout about 4,820, 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 Harbison Canyon

Half the homes in Harbison Canyon were built by 1985, 41% 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. 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.

86% of households own their home, and 76% of homes are detached houses, 2% townhouses. Where an HOA governs the exterior, its rules on gutter color and style apply before any order is placed.

Hiring in California

Ask any contractor working in Harbison Canyon 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 Harbison Canyon

With half the homes built by 1985, replacement gutters and the fascia behind them come up more often here than in newer suburbs. The line takes all of it:

Nearby

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