San Francisco, CA Weather & Growing Conditions
Overnight
55°F
Mostly Cloudy
Mostly cloudy, with a low around 55. Southwest wind around 6 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 55°F | Mostly Cloudy | 6 mph SW | 1% |
| Tuesday | 71°F | Haze then Mostly Sunny | 6 to 12 mph WSW | 1% |
| Tuesday Night | 56°F | Mostly Cloudy | 6 to 10 mph SW | 1% |
| Wednesday | 72°F | Mostly Sunny | 6 to 10 mph WSW | 1% |
| Wednesday Night | 57°F | Mostly Cloudy | 3 to 10 mph WSW | 0% |
| Thursday | 72°F | Mostly Sunny | 3 to 12 mph WSW | 0% |
| Thursday Night | 57°F | Mostly Cloudy | 5 to 12 mph W | 0% |
| Friday | 74°F | Mostly Sunny | 5 to 12 mph W | 0% |
| Friday Night | 57°F | Mostly Cloudy | 5 to 12 mph WSW | 0% |
| Saturday | 74°F | Mostly Sunny | 5 to 12 mph WSW | 0% |
| Saturday Night | 59°F | Partly Cloudy | 7 to 12 mph WSW | 0% |
| Sunday | 71°F | Mostly Sunny | 7 to 14 mph WSW | 0% |
| Sunday Night | 57°F | Partly Cloudy | 9 to 14 mph WSW | 0% |
| Monday | 68°F | Mostly Sunny | 9 to 14 mph WSW | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for San Francisco, CA
Last spring frost
Dec 30
First fall frost
Dec 25
Growing season
365 days
Hardiness zone
10b
Explore more for San Francisco, CA: full frost dates · planting calendar · California frost dates
Climate data from the nearest NOAA station, San Francisco Oceanside, Ca (3.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.