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King County, Washington

Gutter cleaning, repair and new gutters in Sammamish, WA

Rain in Sammamish adds up to about 63 inches in a normal year, with about 13 days that bring an inch or more. The wettest season is winter (December to February), with about 22.9 inches; the driest is summer (June to August), with 5.6. That is about 39,200 gallons a year off each 1,000 square feet of roof, every drop of it through a gutter and a downspout.

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Sammamish: rain and roofs

NOAA station USC00457773, 10 mi
63.3 in
Rain in a normal year, Sammamish
NOAA normal, SNOQUALMIE FALLS
13.4
Days with an inch or more
a year
39,200 gal
Water off 1,000 sq ft of roof in Sammamish
0.62 gal per sq ft per inch
Nov 7
First fall frost
median date
1994
Median year homes were built
ACS 2020–2024
14%
Homes built before 1980
ACS 2020–2024
Winter22.9 in
Spring16.1 in
Summer5.6 in
Fall18.7 in

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

Counting days with an inch of rain or more, Sammamish sits 45th for heavy-rain days of the 344 places in Washington on this site (13.4 a year). Its housing ranks among the newest by median year built of the 344 places in Washington on this site (half built by 1994). By its first fall frost it sits near the middle of the 344 places in Washington on this site (November 7).

When to clean gutters in Sammamish

The first fall frost comes around November 7 in a typical year here, and the last spring frost around March 30 (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.

Weather and gutters in Sammamish

NOAA Atlas 14 does not cover Washington and Oregon, so there is no current federal estimate of the short downpour for Sammamish; NOAA plans published Atlas 15 estimates for the lower 48 states no earlier than September 2027. Here gutters are sized from the roof and the local building department’s design rate.

The houses in Sammamish

Half the homes in Sammamish were built by 1994, 14% 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.

83% of households own their home, and 82% of homes are detached houses, 4% townhouses. In a townhouse or HOA community, check who owns the gutters and what colors are allowed before booking.

Hiring in Washington

Ask any contractor working in Sammamish what Washington requires of them for gutter work, and to show proof of insurance. Hiring a gutter contractor

Gutter work in Sammamish

In a neighborhood with half its homes built by 1994, the usual calls are cleaning, guards and small repairs. The line takes all of it:

Nearby

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