Weather, San Francisco, February 18, 2026

In San Francisco, a cool start welcomes the day. Temperatures fall between about 7.5 C and 12 C, with a touch more chill in the morning. The air may feel a bit brisk as the day begins.

Clouds dominate, and showers are possible, with a thunderstorm likely this afternoon that may linger into the evening. A short window of heavier rain could occur, so a light rain jacket can come in handy if you head out.

Sunrise is at 06:56 and the sun will set around 17:52, giving a fairly short daylight period. Winds are generally gentle, adding a measured pace to the day.

If you’re out for errands or a stroll, plan for variable skies and occasional showers. A calm approach and a light umbrella will keep the day comfortable.