San Diego County, CA Roof Snow Load - 0 psf
San Diego County, CA: your roof's ASCE 7 snow number, in plain English
San Diego County's roofs are built to hold 0 psf of snow, the ASCE 7-22 figure a permit reviewer checks first.
In depth, not weight: that's roughly 0 inches of fresh, light snow, 0 inches of old, settled snow, or as little as 0 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. Snow load is not a factor in roof design here at all; the ground snow load figure maps to zero.
San Diego County, CA: quick facts
- Design roof snow load0 psf
- Ground snow load, ASCE 7 map0 psf
- National rank#2,474 of 2,758
- California rank#7 of 41
- Population3,298,799
- Annual snowfall, NOAA normal0 in.
- FIPS06073
San Diego County by the numbers
Nationally that's #2,474 out of 2,758 rated counties, the top 90%; within California alone, San Diego County ranks #7 of 41. 1.1 psf is California's typical county figure - San Diego County comes in 1.1 psf under it.
San Diego County, FIPS 06073, is home to 3,298,799 people near 33.0236°N 116.7761°W. Its 0 psf ground snow load figure is the map value; 0 psf is what a roof is actually designed for.
San Diego County's snowfall, most winters
0 in. a year: that's San Diego County's NOAA 1991-2020 snowfall normal, measured at RAMONA FIRE DEPT, CA US (7.7 mi away). See the density guide.
Before you rely on San Diego County's number
Treat the San Diego 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.