It's SF’s warmest time of year, but the city is stuck in fog
- Posted on September 20, 2026
- By San Francisco Chronicle
- 1 Views
- 1 min read
In brief
San Francisco experiences its seasonal peak temperatures yet remains shrouded in persistent fog, creating an unusual weather paradox. Throughout California, meteorologists predict volatile temperature swings oscillating between above-average and below-normal conditions over the coming weeks. This pattern represents a departure from traditional heat wave scenarios, as the region faces unpredictable daily fluctuations rather than prolonged extreme warmth. Residents and visitors should prepare for rapidly changing weather conditions as the state navigates this transitional atmospheric period.
Summary auto-generated by AI from the original publisher's content. Editorial standards.
It's SF’s warmest time of year, but the city is stuck in fog
Rapidly flipping temperatures from above to below normal — rather than a sustained extreme heat wave — are expected across California the next few weeks.
