SnowLoadCheck

Henry County, MO Roof Snow Load - 20 psf

What ASCE 7 says about snow load in Henry County

Moderate
20 psf

That's Henry County's design roof snow load per ASCE 7-22, for a typical heated single-family home - the number a permit reviewer starts from. Flat and low-pitch roofs in Henry County are actually governed by ASCE 7's §7.3.4 minimum of 20 psf, not the 14 psf the ground-load formula alone would produce.

Converted to something you can actually eyeball on a roof: about 44 in. of fresh powder, 16 in. once it settles and packs down, or just 4 in. if it's turned to ice. A meaningful design load. Most homes built to modern code handle it, but additions, carports, and flat-roofed sections are worth a second look.

Snow on Henry County's roofs right now?

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Henry County at a glance

Where Henry County's figure sits nationally

Out of 2,758 rated US counties, Henry County sits at #930, the top 34% nationally - #36 of 115 within Missouri. 18.6 psf is Missouri's typical county figure - Henry County beats it by 1.4 psf.

Near 38.3865°N 93.7926°W, FIPS 29083: Henry County counts 22,575 residents and a 20 psf map value, which the code's own factors turn into 20 psf.

How much it actually snows in Henry County

Most winters bring Henry County roughly 11.1 in. of snow - NOAA's normal at CLINTON, MO US, 1.3 mi off. (fresh vs. packed vs. ice explains why.)

Read this before you rely on it

Henry 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 Henry County's county-wide figure. Details: the calculation guide.