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Rock Island County, Illinois

Gutter cleaning, repair and new gutters in Rock Island, IL

A normal year in Rock Island brings about 38 inches of rain; on roughly 10 of its days, an inch or more comes down at once. The wettest season is summer (June to August), with about 13.2 inches; the driest is winter (December to February), with 5.5. Off a 1,000-square-foot roof, that comes to about 23,700 gallons a year for the gutters to carry.

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Rock Island: rain and roofs

NOAA station USW00014923, 3 mi
38.3 in
Rain in a normal year, Rock Island
NOAA normal, MOLINE QUAD CITY INTL AP
9.6
Days with an inch or more
a year
23,700 gal
Water off 1,000 sq ft of roof in Rock Island
0.62 gal per sq ft per inch
7.87 in/hr
5-minute downpour, once in 10 years
NOAA Atlas 14 Volume 2
Oct 18
First fall frost
median date
1952
Median year homes were built
ACS 2020–2024
86%
Homes built before 1980
ACS 2020–2024
Winter5.5 in
Spring11.1 in
Summer13.2 in
Fall8.4 in

Bars to one scale; the longest is summer (June to August).

By heavy-rain days, Rock Island falls near the middle of the 695 places in Illinois on this site (9.6 a year). By house age it falls 51st oldest by median year built of the 695 places in Illinois on this site (half built by 1952). By first frost it falls 158th earliest for the first fall frost of the 695 places in Illinois on this site (October 18).

When to clean gutters in Rock Island

The first fall frost comes around October 18 in a typical year here, and the last spring frost around April 24 (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 Rock Island rain

Gutters are sized for the worst few minutes of a storm, not for the year. In Rock Island the five-minute rain expected about once in ten years falls at 7.87 inches an hour (NOAA Atlas 14 Volume 2). At that rate one 2-by-3-inch downspout drains about 910 square feet of roof and one 3-by-4-inch downspout about 1,830, 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.

Rock Island averages about 36 inches of snow a year (NOAA normals). Snow on a roof brings ice dams: heat escaping from the house melts the snow, and the water refreezes at the cold eave, in the gutter and over it. University of Minnesota Extension puts the cause in the attic, not in the gutter, so a gutter that fills with ice is a symptom; hangers spaced to carry ice and a sound fascia are what the gutter itself needs.

The houses in Rock Island

Half the homes in Rock Island were built by 1952, 86% before 1980 (ACS 2020–2024). At that age a gutter has seen decades of leaves and storms, and the fascia it hangs from has too. 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 66% of homes are detached houses, 4% townhouses. If an association maintains the exterior, the gutters may be its job rather than yours; check before calling.

Hiring in Illinois

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

Gutter work in Rock Island

With half the homes built by 1952, 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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