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Northern California’s Interior Hits Hottest Temperatures of the Year as Triple-Digit Heat Persists

A powerful high-pressure ridge has driven interior temperatures above 105°F under a heat advisory.

Overview

  • Redding is forecast to reach around 110°F from Friday through Sunday and Sacramento could climb to about 105°F, marking the hottest weather of the summer so far.
  • The National Weather Service has extended a heat advisory in the northern Sacramento Valley through 11 p.m. Monday and issued a separate advisory for the San Joaquin Valley until Tuesday evening.
  • A persistent marine layer and strengthening sea breezes have kept immediate coastal Bay Area highs in the 60s and 70s while inland shoreline communities warm into the 80s and low 90s.
  • Smoke drifting south from the Green Fire in Shasta County has degraded air quality to unhealthy levels for sensitive groups across parts of the Sacramento Valley.
  • Overnight lows are expected to remain in the 70s in much of the interior, offering little relief before temperatures gradually return to near-normal by midweek.