Gratiot County, MI Roof Snow Load - 24.5 psf

What ASCE 7 says about snow load in Gratiot County

Converted to something you can actually eyeball on a roof: about 53.9 in. of fresh powder, 19.6 in. once it settles and packs down, or just 4.9 in. if it's turned to ice. Modern-code homes carry a load like this without issue; an older addition, a carport, or any flat-roofed section is where it is worth checking first.

Gratiot County at a glance

• Design roof snow load24.5 psf
• Ground snow load, ASCE 7 map35 psf
• National rank#328 of 2,758
• Michigan rank#48 of 70
• Population41,372
• Annual snowfall, NOAA normal38.3 in.
• FIPS26057

Where Gratiot County's figure sits nationally

Out of 2,758 rated US counties, Gratiot County sits at #328, the top 12% nationally - #48 of 70 within Michigan. 31.7 psf is Michigan's typical county figure - Gratiot County comes in 7.2 psf under it.

Near 43.2923°N 84.6047°W, FIPS 26057: Gratiot County counts 41,372 residents and a 35 psf map value, which the code's own factors turn into 24.5 psf.

How much it actually snows in Gratiot County

Most winters bring Gratiot County roughly 38.3 in. of snow - NOAA's normal at OWOSSO WWTP, MI US, 28.7 mi off. 28.7 mi is a real gap between Gratiot County and its nearest reporting station, so local snowfall can diverge from this figure, especially near elevation changes. (fresh vs. packed vs. ice explains why.)

Read this before you rely on it

Gratiot County's number above is ASCE 7-22's default case, not a custom calculation: ordinary residential occupancy, heated, sited on ground that's neither fully sheltered nor fully exposed. Any one of those changing - pitch, exposure, heating, occupancy - moves the real figure.

Nothing here substitutes for an address-level number. Get one free, in about a minute, from the ASCE 7 Hazard Tool using your own coordinates rather than Gratiot County's county-wide figure. (How this figure is calculated.)