San Francisco County Weather Forecast
San Francisco County weather: 59°F, overcast. Hourly forecast, 14-day outlook, UV, air quality and the best time to visit.
Risk assessment for San Francisco County
Derived from the current forecast window - not an official warning.
Peak gusts of 27 mph and 0 thunderstorm days in the next 16 days.
Wettest single day forecast at 0,0 in, 0,0 in across the window. Flash flooding risk rises sharply above 50 mm in a day.
16-day forecast for San Francisco County
Daily highs and lows, precipitation and UV.
| Day | Conditions | High / Low | Precip | Wind | UV |
|---|---|---|---|---|---|
| Thu, Aug 20 | 🌥️ Fog | 67° / 54° | 1% | 15 mph | 7 |
| Fri, Aug 21 | 🌥️ Fog | 66° / 57° | 2% | 18 mph | 8 |
| Sat, Aug 22 | ⛅ Partly cloudy | 72° / 57° | 2% | 15 mph | 8 |
| Sun, Aug 23 | ☁️ Overcast | 74° / 59° | 0% | 10 mph | 7 |
| Mon, Aug 24 | ☁️ Overcast | 71° / 59° | 1% | 11 mph | 8 |
| Tue, Aug 25 | ☁️ Overcast | 69° / 58° | 1% | 11 mph | 7 |
| Wed, Aug 26 | ⛅ Partly cloudy | 71° / 58° | 0% | 10 mph | 7 |
| Thu, Aug 27 | ☁️ Overcast | 71° / 59° | 0% | 12 mph | 7 |
| Fri, Aug 28 | ☁️ Overcast | 68° / 58° | 0% | 12 mph | 7 |
| Sat, Aug 29 | ☁️ Overcast | 69° / 58° | 1% | 11 mph | 7 |
| Sun, Aug 30 | ☁️ Overcast | 70° / 58° | 0% | 13 mph | 7 |
| Mon, Aug 31 | ☁️ Overcast | 67° / 58° | 0% | 16 mph | 7 |
| Tue, Sep 1 | ⛅ Partly cloudy | 69° / 59° | 0% | 20 mph | 7 |
| Wed, Sep 2 | ☁️ Overcast | 70° / 58° | 0% | 11 mph | 7 |
| Thu, Sep 3 | ☀️ Clear sky | 83° / 59° | 0% | 7 mph | 7 |
| Fri, Sep 4 | ☁️ Overcast | 88° / 68° | 0% | 7 mph | 6 |
What this means for San Francisco County
Today is about average for August. The forecast high of 67°F is in line with the 69°F typical for this month.
Rain is very unlikely today - plans do not need a backup.
No weather-related travel disruption is expected today. Roads and airports should run normally.
Northern Hemisphere, so peak summer falls in June to August.
The gap between the warmest and coldest month averages 43°F - an unusually even climate through the year.
See the San Francisco County forecast by time range
San Francisco County weather - more answers
Explore San Francisco County
Every topic we hold for this place, and the same topic for the places around it.
Weather for related places
Frequently asked questions
Where is San Francisco County?
San Francisco County is a county in California. Its coordinates are 37.7749, -122.4194. It lies in North America.
What is the weather like in San Francisco County right now?
It is currently 59°F (15°C) with overcast. Humidity is 91% and wind is 15 mph.
When is the best time to visit San Francisco County?
May, June, July, August, September and October offer the most comfortable conditions in San Francisco County, which has a Mediterranean climate. January, February and December are usually the hardest months for outdoor plans.
What time zone is San Francisco County in?
San Francisco County observes America/Los_Angeles (UTC-07:00). The local time is 2:53 AM.
How many people live in San Francisco County?
San Francisco County has a population of approximately 810.000.
What is the nearest airport to San Francisco County?
The closest airports are San Francisco International Airport (SFO), 11 mi away.
What are the top things to do in San Francisco County?
Popular options include Alcatraz Island, Golden Gate Bridge, Point Lobos State Natural Reserve, Pinnacles National Park, Julia Pfeiffer Burns State Park and Emerald Bay State Park.
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| Place data | USPOTUS Atlas dataset (us-counties) - coordinates, hierarchy and facts. |
|---|---|
| Forecast and observations | Open-Meteo (ECMWF and national models). |
| Air quality and pollen | Copernicus CAMS via Open-Meteo. US AQI scale. |
| Climate averages | ERA5 reanalysis via the Open-Meteo archive, aggregated over 3 years. |
| Official alerts | US National Weather Service. |
| Method | Scores, comparisons and advice on this page are computed from the inputs above. Distances are straight-line. Nothing is estimated where data is missing - the block is simply not shown. |
Last updated August 21, 2026 at 2:53 AM local time. Live blocks refresh every 15 minutes; climate averages monthly.

