St. Charles County, Missouri
Gutter cleaning, repair and new gutters in O'Fallon, MO
A normal year in O'Fallon brings about 44 inches of rain; on roughly 12 of its days, an inch or more comes down at once. The wettest season is spring (March to May), with about 13.5 inches; the driest is winter (December to February), with 8.1. Every 1,000 square feet of roof sheds about 27,500 gallons a year, and all of it goes through the gutters.
Call (866) 228-6229 free call to a gutter contractor serving O'FallonO'Fallon: rain and roofs
NOAA station USC00238805, 6 miBars to one scale; the longest is spring (March to May).
For days with an inch of rain or more, O'Fallon ranks near the middle of the 361 places in Missouri on this site (12.2 a year). By house age it falls among the newest by median year built of the 361 places in Missouri on this site (half built by 2000). By its first fall frost it sits near the middle of the 361 places in Missouri on this site (October 26).
When to clean gutters in O'Fallon
The first fall frost comes around October 26 in a typical year here, and the last spring frost around April 10 (median dates, NOAA normals). Plan the fall visit for after the frost, when the trees over the roof have finished dropping, and the spring visit for after the pollen and catkins.
When to clean gutters explains how the trees over a roof change the schedule.
Gutter and downspout size for O'Fallon rain
What overwhelms a gutter is a burst, not a season. In O'Fallon the five-minute rain expected about once in ten years falls at 7.48 inches an hour (NOAA Atlas 14 Volume 8). At that rate one 2-by-3-inch downspout drains about 960 square feet of roof and one 3-by-4-inch downspout about 1,930, 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.
The houses in O'Fallon
Half the homes in O'Fallon were built by 2000, 10% before 1980 (ACS 2020–2024). In a neighborhood that young, many houses still have the gutters the builder put up, and the usual call is a cleaning, a leak or guards rather than a full replacement.
80% of households own their home, and 74% of homes are detached houses, 9% townhouses. In a townhouse or HOA community, check who owns the gutters and what colors are allowed before booking.
Hiring in Missouri
Ask any contractor working in O'Fallon what Missouri requires of them for gutter work, and to show proof of insurance. Hiring a gutter contractor
Gutter work in O'Fallon
In a neighborhood with half its homes built by 2000, the usual calls are cleaning, guards and small repairs. The line takes all of it: