What to Wear in San Francisco in Fall: Month-by-Month Outfit Guide
San Francisco in fall sits in the 55 to 75°F range. This is the layer-by-layer outfit guide for San Francisco's fall weather — what to wear, what to pack for a visit, and the local context that shapes the recommendations.
WHAT TO EXPECT
55 to 75°F is the typical range for San Francisco in fall (September, October, November). September through November. SF's warmest season — often called Indian Summer. 65-75°F, clearer skies, less fog. The best months. The temperature range is the headline; what you actually feel depends on humidity, wind, and what indoor spaces you'll cycle through.
THE FOUNDATION LAYER
Lightweight, breathable single layer. Linen, cotton voile, or technical synthetic.
THE MID LAYER
Skip it. San Francisco fall doesn't need a mid layer.
THE OUTERWEAR
None. The "outer layer" in San Francisco summer is air conditioning. Carry a light wrap or button-down for over-AC restaurants.
ACCESSORIES
Sun hat, UV-rated sunglasses, sandals or breathable sneakers, and a light scarf for over-AC interiors.
WHAT TO PACK FOR A TRIP TO SAN FRANCISCO IN FALL
Three layer permutations covering the 55 to 75°F range, plus accessories. If your trip spans the season's edge (early March or late November), pack toward the cooler end of the range — overestimating warmth is easier to recover from than underestimating.
LOCAL CONTEXT
Layer aggressively. Always pack a sweater and a windbreaker, even in July. Microclimates are extreme — Mission can be 15°F warmer than Outer Sunset on the same day.