Local Climate & Conditions in Altadena
Altadena sits directly against the San Gabriel Mountains at around 1,300 feet, which means hot summer afternoons in the mid-to-upper 90s, cool nights, and significant exposure to Santa Ana winds funneling out of the canyons. Wind loading is a real structural consideration here, not a formality, and fire-resistant non-combustible materials are a sensible default given the wildland interface.