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Gutter cleaning, repair and new gutters in Boise City, ID

Boise City gets about 12 inches of rain in a normal year, and a day with an inch or more comes almost never. The wettest season is spring (March to May), with about 4.0 inches. Off a 1,000-square-foot roof that is about 7,100 gallons a year, most of it in steady rain rather than downpours.

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Boise City: rain and roofs

NOAA station USW00024131, 2 mi
11.5 in
Rain in a normal year, Boise City
NOAA normal, BOISE AIR TERMINAL
0.0
Days with an inch or more
a year
7,100 gal
Water off 1,000 sq ft of roof in Boise City
0.62 gal per sq ft per inch
3.73 in/hr
5-minute downpour, once in 10 years
NOAA Atlas 14 Volume 12
Oct 21
First fall frost
median date
1985
Median year homes were built
ACS 2020–2024
43%
Homes built before 1980
ACS 2020–2024
Winter4.0 in
Spring4.0 in
Summer1.1 in
Fall2.4 in

Bars to one scale; the longest is spring (March to May).

Counting days with an inch of rain or more, Boise City sits among the fewest heavy-rain days of the 90 places in Idaho on this site (0.0 a year). By house age it falls near the middle of the 90 places in Idaho on this site (half built by 1985). By its first fall frost it sits among the latest for the first fall frost of the 90 places in Idaho on this site (October 21).

When to clean gutters in Boise City

The first fall frost comes around October 21 in a typical year here, and the last spring frost around April 24 (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 Boise City rain

The short, hard downpour is what a gutter is sized for. In Boise City the five-minute rain expected about once in ten years falls at 3.73 inches an hour (NOAA Atlas 14 Volume 12). At that rate one 2-by-3-inch downspout drains about 1,930 square feet of roof and one 3-by-4-inch downspout about 3,860, 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.

Boise City is dry by national standards, about 12 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 3.73 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 Boise City

Half the homes in Boise City were built by 1985, 43% 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 65% 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 Idaho

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

Gutter work in Boise City

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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