Montgomery County, IN Roof Snow Load - 20 psf
What ASCE 7 says about snow load in Montgomery County
That's Montgomery County's design roof snow load per ASCE 7-22, for a typical heated single-family home - the number a permit reviewer starts from. ASCE 7's low-slope-roof minimum (§7.3.4) raises the governing figure to 20 psf - higher than the 14 psf the ground-load formula alone would give, and the code says use the larger one.
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.
Montgomery County at a glance
- Design roof snow load20 psf
- Ground snow load, ASCE 7 map20 psf
- National rank#788 of 2,758
- Indiana rank#30 of 89
- Population38,633
- Annual snowfall, NOAA normal21.7 in.
- FIPS18107
Where Montgomery County's figure sits nationally
Out of 2,758 rated US counties, Montgomery County sits at #788, the top 29% nationally - #30 of 89 within Indiana. Indiana counties average 19.3 psf; Montgomery County runs 0.7 psf higher than that.
Near 40.0403°N 86.8927°W, FIPS 18107: Montgomery County counts 38,633 residents and a 20 psf map value, which the code's own factors turn into 20 psf.
How much it actually snows in Montgomery County
Most winters bring Montgomery County roughly 21.7 in. of snow - NOAA's normal at CRAWFORDSVILLE 6 SE, IN US, 5.5 mi off. (fresh vs. packed vs. ice explains why.)
Read this before you rely on it
Montgomery 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 Montgomery County's county-wide figure. See the methodology guide.