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Washington County, Oregon

Gutter cleaning, repair and new gutters in Cornelius, OR

Cornelius gets about 47 inches of rain in a normal year, and on about 8 days a year an inch or more falls in a single day. The wettest season is winter (December to February), with about 21.7 inches; the driest is summer (June to August), with 2.2. That is about 29,000 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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Cornelius: rain and roofs

NOAA station USC00352997, 3 mi
46.7 in
Rain in a normal year, Cornelius
NOAA normal, FOREST GROVE
8.3
Days with an inch or more
a year
29,000 gal
Water off 1,000 sq ft of roof in Cornelius
0.62 gal per sq ft per inch
Oct 26
First fall frost
median date
1990
Median year homes were built
ACS 2020–2024
35%
Homes built before 1980
ACS 2020–2024
Winter21.7 in
Spring10.6 in
Summer2.2 in
Fall12.3 in

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

Counting days with an inch of rain or more, Cornelius sits near the middle of the 193 places in Oregon on this site (8.3 a year). By house age it falls near the middle of the 193 places in Oregon on this site (half built by 1990). By first frost it falls 47th earliest for the first fall frost of the 188 places in Oregon on this site (October 26).

When to clean gutters in Cornelius

The first fall frost comes around October 26 in a typical year here, and the last spring frost around April 16 (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 Cornelius

NOAA Atlas 14 does not cover Washington and Oregon, so there is no current federal estimate of the short downpour for Cornelius; 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 Cornelius

Half the homes in Cornelius were built by 1990, 35% 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.

72% of households own their home, and 69% of homes are detached houses, 6% townhouses. If an association maintains the exterior, the gutters may be its job rather than yours; check before calling.

Hiring in Oregon

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

Gutter work in Cornelius

In a neighborhood with half its homes built by 1990, the usual calls are cleaning, guards and small repairs. The line takes all of it:

Nearby

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