Live forecasts update automatically; written guidance last reviewed 16 June 2026 by the Canada Scope Weather Desk. Data from Environment and Climate Change Canada and other national met services via Open-Meteo.
San Francisco’s weather is defined by its coastal Mediterranean climate: mild, dry summers and cool, wet winters. The live forecast above shows current conditions, but expect morning fog and temperature swings between the downtown core and the bay.
What makes San Francisco’s weather so variable?
The city sits where cool Pacific waters meet warm inland air, creating persistent fog and microclimates. A neighbourhood near the Golden Gate can be 5°C cooler than one inland. If you’re checking san francisco weather 14 day outlooks, remember that long-range forecasts become less precise because of this coastal gradient. For sf weather hourly changes, the live forecast above is your most reliable source.
What should visitors expect day to day?
Mornings often start foggy, then burn off by midday—only to return by evening. Weather in san francisco tomorrow will likely follow this pattern. Temperatures are typically reported in Celsius in Canada, but if you use sf weather fahrenheit on US sites, expect highs around 60–70°F (15–21°C). For san francisco weather 15 day planning, pack layers: a light jacket, sunglasses, and a windproof shell.
When is the best time to visit San Francisco?
September and October offer the sunniest, warmest weather with less fog. Summer months (June–August) can be surprisingly cool and overcast—the city’s famous “June gloom”. Winter brings rain but fewer crowds.
Does San Francisco get a lot of rain?
Only from November to March. The city receives about 600 mm annually, mostly in short, steady storms. Summers are nearly dry. Check Canada’s weather hub for comparisons with wetter Canadian cities like Vancouver.
Why is the fog so common in San Francisco?
Cold ocean currents from the California Current meet warm inland air, creating condensation. The fog is thickest in the early morning and often clears by noon. sf weather radar can show fog banks approaching the coast.