Weather report 17 October 2026, 12:00

San Francisco's sunny Saturday stays dry, with temperatures climbing to 27°C this afternoon before easing to around 20°C by evening. No rain windows are forecast for the rest of the day. From about 15:00 the wind turns westerly and gusts reach 30 km/h.

The night will be clear to lightly cloudy and cool to 13°C. That is a marked drop from the afternoon; the westerly wind eases at first but picks up again through the morning.

Sunday morning starts at around 12°C and reaches about 20°C by midday, with no rain forecast up to then. The westerly wind, however, strengthens noticeably and brings gusts of around 39 km/h by 12:00. In the afternoon gusts may reach 42 km/h.

Monday turns cooler at 17°C and stays dry. Tuesday remains similar at 18°C before Wednesday brings a marked change with around 5 mm of rain; Thursday stays changeable and cool. Friday should be dry again at 19°C.

The model history shows no measurable rain in San Francisco over the past 40 days. After a model maximum of 30.1°C on Friday, Saturday is forecast to reach 27°C, below the 30°C mark, so no heatwave develops. Wednesday's rain would be the first notable precipitation in that period.

The wind is initially light from the north; this afternoon it turns westerly and gusts reach 30 km/h. On Sunday the westerly strengthens through the morning, with gusts around 39 km/h by midday and up to 42 km/h in the afternoon. Expect noticeable crosswinds on bridges and exposed stretches.