Snow Load in Maine

16 counties — Average 71.5 PSF (Extreme)

5
8
3
Heavy (31.3%) Extreme (50.0%) Case Study (18.8%)
Heavy — 5 counties with 41–60 PSF. Engineered roof systems required for significant snow accumulation.
Extreme — 8 counties with 61+ PSF. Heavy-duty structural engineering required for extreme snowfall areas.
Case Study — 3 counties where snow loads vary too much to assign one number. A licensed engineer must determine the load for your specific site.

Based on ASCE 7-22, the national standard for structural snow loads used by engineers and building codes across the US.

Maine Snow Load Map

Counties colored by snow load classification.

Highest Snow Load Counties

Androscoggin80 PSF
Aroostook90 PSF
Cumberland50 PSF
Franklin90 PSF
Hancock70 PSF
Kennebec80 PSF
Knox50 PSF
Lincoln60 PSF
Penobscot80 PSF
Sagadahoc60 PSF
Waldo70 PSF
Washington90 PSF
+1 more
Maine

Check Your ZIP Code

All 16 Counties — By Snow Load

CountyClassificationSnow Load
Androscoggin Extreme 80 PSF
Aroostook Extreme 90 PSF
Cumberland Heavy 50 PSF
Franklin Extreme 90 PSF
Hancock Extreme 70 PSF
Kennebec Extreme 80 PSF
Knox Heavy 50 PSF
Lincoln Heavy 60 PSF
Oxford Case Study Site Study
Penobscot Extreme 80 PSF
Piscataquis Case Study Site Study
Sagadahoc Heavy 60 PSF
Somerset Case Study Site Study
Waldo Extreme 70 PSF
Washington Extreme 90 PSF
York Heavy 60 PSF

Source: ASCE 7-22 ground snow load data

Frequently Asked Questions

What is the snow load in Maine?

Maine has an average ground snow load of 71.5 PSF, classified as extreme. Out of 16 counties: 5 heavy, 8 extreme, 3 case study.

Which Maine counties have the highest snow load?

Maine has 8 counties with extreme snow load (61+ PSF). Maine has 5 counties with heavy snow load (41-60 PSF). 3 counties require a site-specific case study. See the county table above for a complete breakdown.

How do I check snow load for my Maine address?

Enter your ZIP code in the search box above to see your area's ASCE 7-22 ground snow load, classification, and roof snow load calculator.

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