Weather tomorrow in San Francisco
Weather tomorrow in San Francisco: Clear sky, high 21°, low 12°, 2% rain.
San Francisco sits at 37.8° north latitude, in the temperate zone, 18 m above sea level, in the America/Los_Angeles time zone. Over the week ahead highs range from 17° to 29° and lows from 12° to 15°, averaging 17°.
Forecast rainfall totals 3 mm, and 0 of the seven days carry a chance above 50%. Today the sun rises at 07:20 and sets at 18:29: 11:09 of daylight.
| Conditions | Feels like | rain | Wind | |
|---|---|---|---|---|
| Now | Clear sky | 17.6° | 0% | 10 km/h |
| 11:00 | Clear sky | 20.8° | 0% | 10 km/h |
| 12:00 | Clear sky | 24.8° | 0% | 10 km/h |
| 13:00 | Clear sky | 27.6° | 0% | 9 km/h |
| 14:00 | Clear sky | 28.8° | 0% | 11 km/h |
| 15:00 | Clear sky | 29.3° | 0% | 11 km/h |
| 16:00 | Clear sky | 28.3° | 0% | 12 km/h |
| 17:00 | Clear sky | 25.2° | 0% | 13 km/h |
| 18:00 | Clear sky | 23.2° | 0% | 11 km/h |
| 19:00 | Clear sky | 20.1° | 0% | 2 km/h |
| 20:00 | Clear sky | 18.5° | 0% | 4 km/h |
| 21:00 | Clear sky | 17.3° | 0% | 5 km/h |
| 22:00 | Clear sky | 16.4° | 0% | 4 km/h |
| 23:00 | Clear sky | 15.6° | 0% | 8 km/h |
| 00:00 | Clear sky | 15° | 1% | 10 km/h |
| 01:00 | Clear sky | 14.4° | 1% | 7 km/h |
| 02:00 | Clear sky | 13.7° | 1% | 5 km/h |
| 03:00 | Clear sky | 13° | 1% | 7 km/h |
| 04:00 | Clear sky | 12.7° | 2% | 10 km/h |
| 05:00 | Clear sky | 12.6° | 2% | 9 km/h |
| 06:00 | Clear sky | 12.3° | 1% | 8 km/h |
| 07:00 | Clear sky | 11.8° | 1% | 3 km/h |
| 08:00 | Clear sky | 11.9° | 1% | 5 km/h |
| 09:00 | Clear sky | 16° | 1% | 8 km/h |
Weather data by Open-Meteo (ECMWF, GFS, ICON models and national weather services). Updated every 15 minutes.
Weather in San Francisco month by month
The table gathers the 2016-2025 climate normals for San Francisco: average highs and lows, total rainfall and number of rainy days for each month of the year.
San Francisco has an annual mean temperature of 14°. The warmest month is September, when highs sit around 20.9°; the coldest is January, with average lows of 7.9°. The 13° gap between those two ends of the calendar is the measure of how much the year swings here.
Rainfall totals about 610 mm a year, spread over roughly 58 rainy days. The wettest month is December, averaging 132.8 mm across 10 days; the driest is July, with 0.3 mm.
| Month | Average high | Average low | Rainfall | Rainy days |
|---|---|---|---|---|
| January | 13.7° | 7.9° | 126.4 mm | 11 |
| February | 14.6° | 7.9° | 96.4 mm | 8 |
| March | 14.6° | 9° | 103.1 mm | 11 |
| April | 15.9° | 10.1° | 32.2 mm | 5 |
| May | 17.2° | 11.3° | 17.4 mm | 2 |
| June | 18.9° | 12.7° | 1.3 mm | 0 |
| July | 18.7° | 13.3° | 0.3 mm | 0 |
| August | 19.7° | 14.2° | 0.6 mm | 0 |
| September | 20.9° | 14.4° | 3.8 mm | 1 |
| October | 20.4° | 12.9° | 31.7 mm | 3 |
| November | 16.5° | 10.1° | 64.3 mm | 7 |
| December | 13.5° | 8° | 132.8 mm | 10 |
When to visit San Francisco
For travellers who plan around the weather, June–October tend to be the most comfortable stretch: average highs between 18.7° and 20.9° and rainfall below the yearly average.
What to expect each month
- In January, highs sit near 13.7° and lows near 7.9°, with about 126.4 mm of rain over 11 days.
- In February, highs sit near 14.6° and lows near 7.9°, with about 96.4 mm of rain over 8 days.
- In March, highs sit near 14.6° and lows near 9°, with about 103.1 mm of rain over 11 days.
- In April, highs sit near 15.9° and lows near 10.1°, with about 32.2 mm of rain over 5 days.
- In May, highs sit near 17.2° and lows near 11.3°, with about 17.4 mm of rain over 2 days.
- In June, highs sit near 18.9° and lows near 12.7°, with about 1.3 mm of rain over 0 days.
- In July, highs sit near 18.7° and lows near 13.3°, with about 0.3 mm of rain over 0 days.
- In August, highs sit near 19.7° and lows near 14.2°, with about 0.6 mm of rain over 0 days.
- In September, highs sit near 20.9° and lows near 14.4°, with about 3.8 mm of rain over 1 days.
- In October, highs sit near 20.4° and lows near 12.9°, with about 31.7 mm of rain over 3 days.
- In November, highs sit near 16.5° and lows near 10.1°, with about 64.3 mm of rain over 7 days.
- In December, highs sit near 13.5° and lows near 8°, with about 132.8 mm of rain over 10 days.
Recorded extremes
Across 2016-2025, the thermometer reached 38.5° at the top of the series and fell to 0.4° at the bottom. These are observed values, not averages: they show what the city has actually faced.
Normals computed from the ERA5 reanalysis (Copernicus/ECMWF), 2016-2025 series.
FAQ
What is the temperature in San Francisco right now?
It is 18°C in San Francisco right now, with clear sky. It feels like 17°C.
Will it rain in San Francisco today?
The peak chance of rain today is 0%, with about 0 mm expected.
What will the weather be tomorrow in San Francisco?
Tomorrow the high is 21° and the low 12°, with clear sky.
Where does the data come from and how often is it updated?
Data comes from the ECMWF, GFS and ICON models and national weather services via Open-Meteo, updated every 15 minutes.
What is the warmest month in San Francisco?
The warmest month is September, with average highs of 20.9° and lows of 14.4°.
Does it rain a lot in San Francisco?
The city gets about 610 mm a year over 58 rainy days. The wettest month is December, with 132.8 mm.
When is the best time to visit San Francisco?
On weather grounds, June–October combine the most agreeable temperatures with below-average rainfall.