Gutters, roofing, siding and windows in ZIP code 54421, Colby, WI

• Gutters in ZIP code 54421

  Clark County averages 35.9 inches of precipitation a year (NOAA 1991–2020 normals). One inch of rain on 1,000 square feet of roof is about 623 gallons of water for the gutters to carry.

• Roofing in ZIP code 54421

  None of the 11 hail events on record within 10 miles of the center of ZIP code 54421 from 2016 through March 31, 2026 had hail 1.5 inches or larger. The National Weather Service counts hail of 1 inch or larger as severe.

• Siding in ZIP code 54421

  The strongest thunderstorm wind on record within 10 miles of the center of ZIP code 54421 from 2016 through September 22, 2025 was 75 mph. The National Weather Service counts a thunderstorm wind of 58 mph or more as severe.

• Windows in ZIP code 54421

  63% of homes in ZIP code 54421 were built before 1980. A home built before 1980 was built before the energy codes in force today were written.

Source: NOAA Storm Events Database (hail events through March 31, 2026; thunderstorm-wind and tornado events through September 22, 2025); American Community Survey 2023, 5-year; NOAA 1991–2020 climate normals.

ZIP code 54421 is filed here under Colby, in Clark County, Wisconsin; its center is about 61 miles east of our Eau Claire office. ZIP code 54421 also extends into Marathon County. Our address file holds 1,408 address points in ZIP code 54421. Of the cities and towns on our pages, ZIP code 54421 covers only Colby.

Source: Census ZIP Code Tabulation Area, county and place boundaries (a ZIP code can also take in land outside any city or town).

ZIP code 54421 has 1,291 housing units, and 75% of them are single-family detached homes (American Community Survey 2023, 5-year). Another 2% are attached homes such as townhomes. Mobile homes make up 3% of the housing units.

The median home in ZIP code 54421 was built in 1973. 63% of homes in ZIP code 54421 were built before 1980, and 14% were built in 2000 or later. The most common building period is 1939 or earlier, with 359 homes.

71% of occupied homes in ZIP code 54421 are owner-occupied. The median owner-occupied home in ZIP code 54421 is valued at $178,800. Among occupied homes in ZIP code 54421, 48% heat with utility gas, 16% with electricity, 22% with bottled or tank gas, 4% with fuel oil and 8% with wood.

Source: American Community Survey 2023, 5-year (tables B25024, B25034, B25035, B25003, B25077, B25040), for ZIP Code Tabulation Area 54421.

The nearest other ZIP codes we serve, measured center to center, are 54488 in Unity (4.3 miles southwest), 54422 in Curtiss (9.6 miles northwest), 54460 in Owen (12 miles west), 54446 in Loyal (13 miles southwest), 54498 in Withee (18 miles northwest) and 54437 in Greenwood (19 miles southwest). The table sets ZIP code 54421 beside the 8 ZIP codes nearest to it, using the same Census figures for each.

Source: American Community Survey 2023, 5-year, by ZIP Code Tabulation Area; distances are straight lines between ZIP code centers.

The NOAA Storm Events Database records 11 hail events, 16 thunderstorm-wind events and 8 tornadoes within 10 miles of the center of ZIP code 54421 from 2016 through March 31, 2026 for hail and through September 22, 2025 for thunderstorm wind and tornadoes. The largest hail on record there in that period was 1 inch on May 18, 2024, near Dorchester.

The closest event to the center of ZIP code 54421 was 70 mph wind on December 15, 2021, less than 1 mile away near Colby. The most recent hail event within 10 miles of the center of ZIP code 54421 was on May 18, 2024: 1 in hail near Dorchester. The most recent thunderstorm-wind event within 10 miles of the center of ZIP code 54421 was on August 26, 2024, near Spencer. The strongest thunderstorm wind recorded within 10 miles of the center of ZIP code 54421 in that period was 75 mph. The busiest year was 2024, with 8 events in all.

Source: NOAA Storm Events Database (hail events through March 31, 2026; thunderstorm-wind and tornado events through September 22, 2025).

Source: NOAA Storm Events Database (hail events through March 31, 2026; thunderstorm-wind and tornado events through September 22, 2025).

Source: NOAA Storm Events Database (hail events through March 31, 2026; thunderstorm-wind and tornado events through September 22, 2025).

This page is filed under Colby, which is in Clark County; the ratings below are that county's. Clark County scores 85.4 of 100 for hail in FEMA's National Risk Index, which ranks 36th of 72 Wisconsin counties. Clark County scores 73.6 of 100 for strong wind in FEMA's National Risk Index, which ranks 23rd of 72 Wisconsin counties. Clark County scores 57.3 of 100 for winter weather in FEMA's National Risk Index, which ranks 29th of 72 Wisconsin counties. Of the perils listed here, the highest score in Clark County is for cold wave, at 92.5 of 100.

Clark County averages 35.9 inches of precipitation a year (NOAA 1991–2020 normals). The average annual temperature in Clark County is 43.4°F.

Source: FEMA National Risk Index, 2026 release; rank among the state's counties computed from the scores; NOAA 1991–2020 climate normals.

Our Eau Claire office is at 1231 Menomonie St, Eau Claire, WI 54703, about 61 miles from the center of ZIP code 54421. Its hours are Monday–Friday 7:00 AM–7:00 PM. You can reach that office at (715) 716-7137.

• Eau Claire office: address, hours and map