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Twin Falls County, Idaho

Gutter cleaning, repair and new gutters in Twin Falls, ID

Twin Falls gets about 9 inches of rain in a normal year, and a day with an inch or more comes once every 3 years or so. The wettest season is winter (December to February), with about 3.1 inches. Off a 1,000-square-foot roof that is about 5,700 gallons a year, most of it in steady rain rather than downpours.

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Twin Falls: rain and roofs

NOAA station USC00109293, 1 mi
9.2 in
Rain in a normal year, Twin Falls
NOAA normal, TWIN FALLS-KMVT
0.4
Days with an inch or more
a year
5,700 gal
Water off 1,000 sq ft of roof in Twin Falls
0.62 gal per sq ft per inch
3.61 in/hr
5-minute downpour, once in 10 years
NOAA Atlas 14 Volume 12
Oct 9
First fall frost
median date
1980
Median year homes were built
ACS 2020–2024
51%
Homes built before 1980
ACS 2020–2024
Winter3.1 in
Spring3.1 in
Summer1.2 in
Fall1.8 in

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

By heavy-rain days, Twin Falls falls near the middle of the 90 places in Idaho on this site (0.4 a year). By house age it falls near the middle of the 90 places in Idaho on this site (half built by 1980). By first frost it falls near the middle of the 90 places in Idaho on this site (October 9).

When to clean gutters in Twin Falls

The first fall frost comes around October 9 in a typical year here, and the last spring frost around April 30 (median dates, NOAA normals). A fall cleaning set for the weeks after that frost, when the branches over the house are bare, gets the year’s leaves in one trip; a spring visit follows once the pollen and catkins have come down.

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

Gutter and downspout size for Twin Falls rain

The short, hard downpour is what a gutter is sized for. In Twin Falls the five-minute rain expected about once in ten years falls at 3.61 inches an hour (NOAA Atlas 14 Volume 12). At that rate one 2-by-3-inch downspout drains about 1,990 square feet of roof and one 3-by-4-inch downspout about 3,990, 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.

Twin Falls is dry by national standards, about 9 inches in a normal year, but much of the rain that does come can arrive in short, hard storms: the five-minute downpour expected once in ten years still runs at 3.61 inches an hour. Where gutters are used here, the job is moving that burst away from the foundation, and keeping a dry season’s dust and debris from blocking the first storm.

The houses in Twin Falls

Half the homes in Twin Falls were built by 1980, 51% 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.

63% of households own their home, and 69% of homes are detached houses, 5% townhouses. If an association maintains the exterior, the gutters may be its job rather than yours; check before calling.

Hiring in Idaho

Licensing for gutter work differs from state to state; ask a contractor in Twin Falls which license or registration they hold in Idaho, and for proof of liability insurance. Hiring a gutter contractor

Gutter work in Twin Falls

With half the homes built by 1980, 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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