An incessant and dangerous heat wave blistering Northern California was peaking Sunday with another round of record-breaking temperatures expected in the Bay Area and Sacramento Valley before gradual cooling begins.

Northern California's heat wave is expected to continue, with a Heat Advisory potentially extending into Monday and cooling predicted for mid-week.

Some cities in Northern California are seeing temperatures in the upper 90s and lower 100s. Temperatures are generally in the mid-80s this time of year.

The month kicked off with triple-digit temperatures in many parts of the state, with millions of Californians under heat advisories through at least Thursday.

An autumn heat wave will bring temperatures as much as 25 degrees above normal to California this week, likely setting records in many locations. After temperatures were near normal over the weekend,