San Francisco County Weather Forecast
San Francisco County weather: 64°F, clear sky. Hourly forecast, 14-day outlook, UV, air quality and the best time to visit.
14-day forecast for San Francisco County
Daily highs and lows, precipitation and UV.
| Day | Conditions | High / Low | Precip | Wind | UV |
|---|---|---|---|---|---|
| Sat, Aug 22 | ☁️ Overcast | 72° / 57° | 0% | 16 mph | 7 |
| Sun, Aug 23 | 🌥️ Fog | 76° / 54° | 2% | 13 mph | 7 |
| Mon, Aug 24 | 🌥️ Fog | 69° / 56° | 3% | 13 mph | 7 |
| Tue, Aug 25 | ☁️ Overcast | 70° / 60° | 0% | 9 mph | 7 |
| Wed, Aug 26 | ☁️ Overcast | 72° / 59° | 1% | 10 mph | 8 |
| Thu, Aug 27 | 🌤️ Mainly clear | 71° / 59° | 2% | 9 mph | 7 |
| Fri, Aug 28 | ☁️ Overcast | 73° / 59° | 1% | 9 mph | 7 |
| Sat, Aug 29 | ☁️ Overcast | 69° / 59° | 1% | 10 mph | 7 |
| Sun, Aug 30 | 🌤️ Mainly clear | 70° / 58° | 1% | 10 mph | 7 |
| Mon, Aug 31 | ☀️ Clear sky | 69° / 58° | 0% | 12 mph | 7 |
| Tue, Sep 1 | ☁️ Overcast | 68° / 59° | 1% | 13 mph | 7 |
| Wed, Sep 2 | ⛅ Partly cloudy | 68° / 59° | 3% | 15 mph | 7 |
| Thu, Sep 3 | ☁️ Overcast | 66° / 60° | 3% | 17 mph | 7 |
| Fri, Sep 4 | ☁️ Overcast | 74° / 59° | 6% | 8 mph | 6 |
The two-week trend
Steady. The second week averages within a degree of the first, so no big change is signalled.
The window averages 71°F against a August normal of 69°F - right on average.
The next 7 days look unusually dry - roughly 0% of a normal August week (0,0 in against 0,0 in).
What this means for San Francisco County
Today is slightly warmer than average for August. The forecast high of 72°F is 2.7°F above 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.
What to pack, what to skip
- Sunglasses, a brimmed hat and SPF 30+
- If your dates are flexible, avoid January, February and December - historically the least comfortable months here.
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 64°F (18°C) with clear sky. Humidity is 71% and wind is 16 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 3:37 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 23, 2026 at 3:37 AM local time. Live blocks refresh every 15 minutes; climate averages monthly.
