Caswell · NC
What is the iecc 2021 climate zone for Caswell · NC?
For Caswell, state is NC; iecc 2021 climate zone is 3; moisture regime is A; building america climate zone is Mixed‐Humid; changed from pre-2021 iecc is 4→3, recorded from its source on 2026-08-19; source re-checked 2026-09-30.
NC Caswell Mixed‐Humid 4→3 A
— osti.gov, retrieved 2026-08-19
- County
- Caswell verified
- State
- NC our reading
- IECC 2021 climate zone
- 3 verified
- Moisture regime
- A verified
- Building America climate zone
- Mixed‐Humid verified
- Changed from pre-2021 IECC
- 4→3 verified
Values marked our reading are our classification of what the source says — the source does not print them in those words. The quote below is the evidence for each one; judge it yourself.
Source
- osti.govhttps://www.osti.gov/servlets/purl/1893981