Gutters, roofing, siding and windows in Janesville, MN

• Gutters in Janesville

  Waseca County averages 38.5 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 Janesville

  3 of the 15 hail events on record within 10 miles of Janesville 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 Janesville

  The strongest thunderstorm wind on record within 10 miles of Janesville from 2016 through September 22, 2025 was 96 mph. The National Weather Service counts a thunderstorm wind of 58 mph or more as severe.

• Windows in Janesville

  62% of homes in ZIP code 56048 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.

Our pages cover 1 ZIP code of Janesville: 56048. ZIP code 56048 has 1,635 households; its median home was built in 1973, and 86% of its housing units are single-family detached. The median home value in ZIP code 56048 is $223,900, and 87% of its occupied homes are owner-occupied. The median owner-occupied home in Janesville is valued at $194,400.

• ZIP code 56048

Source: American Community Survey 2023, 5-year, by ZIP Code Tabulation Area (a ZIP code can extend beyond the city); ZIP list and address points from the Census address file.

The NOAA Storm Events Database records 15 hail events, 31 thunderstorm-wind events and 9 tornadoes within 10 miles of Janesville 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 1.75 inches on June 16, 2025, near St. Clair. 3 of those hail events had hail 1.5 inches or larger.

The closest event to the center of Janesville was 58 mph wind on July 27, 2023, less than 1 mile away near Janesville. The most recent hail event within 10 miles of Janesville was on September 21, 2025: 1 in hail near Pemberton. The most recent thunderstorm-wind event within 10 miles of Janesville was on August 5, 2024, near Eagle Lake. The strongest thunderstorm wind recorded within 10 miles of Janesville in that period was 96 mph. The busiest year was 2018, 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).

Waseca County has 7,910 housing units, and 81% of them are single-family detached homes (American Community Survey 2023, 5-year). Another 3% are attached homes such as townhomes. Mobile homes make up 3% of the housing units.

The median home in Waseca County was built in 1970. 69% of homes in Waseca County were built before 1980, and 12% were built in 2000 or later. The most common building period is 1939 or earlier, with 1,829 homes.

79% of occupied homes in Waseca County are owner-occupied. The median owner-occupied home in Waseca County is valued at $213,200. Among occupied homes in Waseca County, 58% heat with utility gas, 12% with electricity, 23% with bottled or tank gas, 1% with fuel oil and 3% with wood.

• Year-built table and more on the Waseca County page

Source: American Community Survey 2023, 5-year (tables B25024, B25034, B25035, B25003, B25077, B25040).

Janesville is in Waseca County, so the county ratings below apply to it. Waseca County scores 70.5 of 100 for hail in FEMA's National Risk Index, which ranks 44th of 87 Minnesota counties. Waseca County scores 73 of 100 for strong wind in FEMA's National Risk Index, which ranks 34th of 87 Minnesota counties. Waseca County scores 57.6 of 100 for winter weather in FEMA's National Risk Index, which ranks 58th of 87 Minnesota counties. Of the perils listed here, the highest score in Waseca County is for tornado, at 78.7 of 100.

Waseca County averages 38.5 inches of precipitation a year (NOAA 1991–2020 normals). The average annual temperature in Waseca County is 45°F.

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

The nearest other cities we serve, by straight-line distance, are Elysian (6.2 miles), St. Clair (7.9 miles), Madison Lake (8.1 miles), Pemberton (8.5 miles), Eagle Lake (9.1 miles), Waterville (9.8 miles), Waseca (11 miles) and Waldorf (13 miles). The other Waseca County communities we serve are New Richland, Waldorf and Waseca.

• Elysian 6.2 mi
• St. Clair 7.9 mi
• Madison Lake 8.1 mi
• Pemberton 8.5 mi
• Eagle Lake 9.1 mi
• Waterville 9.8 mi
• Waseca 11 mi
• Waldorf 13 mi
• Mankato 14 mi
• Morristown 15 mi

Our Farmington office is at 821 3rd St, Farmington, MN 55024, about 45 miles from Janesville. Its hours are Monday–Friday 7:00 AM–7:00 PM. You can reach that office at (651) 998-8500.

• Farmington office: address, hours and map