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Washtenaw County, Michigan

Gutter cleaning, repair and new gutters in Chelsea, MI

Rain in Chelsea adds up to about 35 inches in a normal year, with about 6 days that bring an inch or more. The wettest season is summer (June to August), with about 10.7 inches; the driest is winter (December to February), with 6.5. That is about 21,500 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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Chelsea: rain and roofs

NOAA station USC00201502, 1 mi
34.7 in
Rain in a normal year, Chelsea
NOAA normal, CHELSEA
6.4
Days with an inch or more
a year
21,500 gal
Water off 1,000 sq ft of roof in Chelsea
0.62 gal per sq ft per inch
6.38 in/hr
5-minute downpour, once in 10 years
NOAA Atlas 14 Volume 8
Oct 12
First fall frost
median date
1970
Median year homes were built
ACS 2020–2024
58%
Homes built before 1980
ACS 2020–2024
Winter6.5 in
Spring9.1 in
Summer10.7 in
Fall8.5 in

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

Counting days with an inch of rain or more, Chelsea sits near the middle of the 405 places in Michigan on this site (6.4 a year). By house age it falls near the middle of the 406 places in Michigan on this site (half built by 1970). By first frost it falls near the middle of the 406 places in Michigan on this site (October 12).

When to clean gutters in Chelsea

The first fall frost comes around October 12 in a typical year here, and the last spring frost around April 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.

Gutter and downspout size for Chelsea rain

The short, hard downpour is what a gutter is sized for. In Chelsea the five-minute rain expected about once in ten years falls at 6.38 inches an hour (NOAA Atlas 14 Volume 8). At that rate one 2-by-3-inch downspout drains about 1,130 square feet of roof and one 3-by-4-inch downspout about 2,260, 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.

Chelsea averages about 33 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 Chelsea

Half the homes in Chelsea were built by 1970, 58% 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 61% of homes are detached houses, 15% townhouses. If an association maintains the exterior, the gutters may be its job rather than yours; check before calling.

Hiring in Michigan

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

Gutter work in Chelsea

With half the homes built by 1970, 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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