San Francisco, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for San Francisco, a city in Marin County, California.
This Afternoon
63°F
Light Rain Likely
Rain likely. Partly sunny, with a high near 63. Southwest wind 8 to 15 mph, with gusts as high as 18 mph. Chance of precipitation is 70%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for San Francisco
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 63°F | Light Rain Likely | 8 to 15 mph SW | 71% |
| Tonight | 55°F | Slight Chance Light Rain then Mostly Cloudy | 7 to 13 mph SE | 20% |
| Wednesday | 62°F | Mostly Sunny | 6 to 20 mph N | 3% |
| Wednesday Night | 58°F | Mostly Cloudy | 21 mph NNW | 0% |
| Thursday | 63°F | Mostly Sunny | 14 to 18 mph NNW | 0% |
| Thursday Night | 58°F | Partly Cloudy | 18 mph NNW | 0% |
| Friday | 64°F | Mostly Sunny | 13 to 16 mph NNW | 0% |
| Friday Night | 58°F | Mostly Clear | 8 to 15 mph NNW | 0% |
| Saturday | 64°F | Mostly Sunny | 5 to 10 mph N | 0% |
| Saturday Night | 59°F | Partly Cloudy | 10 to 14 mph NW | 0% |
| Sunday | 64°F | Partly Sunny | 10 to 14 mph NNW | 0% |
| Sunday Night | 59°F | Mostly Cloudy | 14 mph NW | 0% |
| Monday | 63°F | Mostly Cloudy | 12 to 15 mph NW | 2% |
| Monday Night | 58°F | Mostly Cloudy | 15 mph NW | 2% |
Forecast source: National Weather Service (api.weather.gov) for San Francisco (37.727, -123.032). Updated through the day.
Growing snapshot for San Francisco
Last spring frost
Jan 11
First fall frost
Dec 21
Growing season
349 days
Hardiness zone
9b
More local growing data for San Francisco: nearby ZIP 94956 weather · frost dates · planting calendar · California frost dates
Nearby towns & communities
Alto
Belvedere
Black Point-Green Point
Bolinas
Corte Madera
Dillon Beach
Fairfax
Inverness
Kentfield
Lagunitas-Forest Knolls
Larkspur
Lucas Valley-Marinwood
Marin City
Mill Valley
Muir Beach
Nicasio
Novato
Petaluma Center
Point Reyes Station
Ross
San Anselmo
San Geronimo
San Rafael
Santa Venetia
Sausalito
Sleepy Hollow
Stinson Beach
Strawberry
Tamalpais-Homestead Valley
Tiburon
Climate data from the nearest NOAA station, San Rafael Civic Ctr, Ca (15.4 mi from San Francisco). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.