Clinton County, MI Roof Snow Load - 21 psf
Clinton County, MI: your roof's ASCE 7 snow number, in plain English
Clinton County's roofs are built to hold 21 psf of snow, the ASCE 7-22 figure a permit reviewer checks first.
In depth, not weight: that's roughly 46.2 inches of fresh, light snow, 16.8 inches of old, settled snow, or as little as 4.2 inches of solid ice - snow that heavy is rare here but ice from a freeze-thaw cycle adds up far faster than the depth suggests. A meaningful design load. Most homes built to modern code handle it, but additions, carports, and flat-roofed sections are worth a second look.
Clinton County in numbers
- Design roof snow load21 psf
- Ground snow load, ASCE 7 map30 psf
- National rank#426 of 2,758
- Michigan rank#53 of 70
- Population80,050
- Annual snowfall, NOAA normal50.2 in.
- FIPS26037
Clinton County by the numbers
Nationally that's #426 out of 2,758 rated counties, the top 15%; within Michigan alone, Clinton County ranks #53 of 70. Michigan counties average 31.7 psf; Clinton County runs 10.7 psf lower than that.
Clinton County, FIPS 26037, is home to 80,050 people near 42.9505°N 84.5917°W. Its 30 psf ground snow load figure is the map value; 21 psf is what a roof is actually designed for.
Clinton County's snowfall, most winters
50.2 in. a year: that's Clinton County's NOAA 1991-2020 snowfall normal, measured at LANSING CAPITAL CITY AP, MI US (11.8 mi away). See the density guide.
Before you rely on Clinton County's number
Treat the Clinton County figure as a starting point, not a final answer: it assumes standard occupancy, a heated structure and a moderately sheltered site, per ASCE 7-22's own defaults. Exposed terrain, an unheated building or a steeper roof all shift the real number.
For a real application, skip the county number and go straight to the ASCE 7 Hazard Tool - enter your coordinates and it returns a site-specific figure a plan reviewer will recognize. See the methodology guide.