San Francisco (SF) weather
Loading live data…Partly cloudy,much the same tomorrow
NWS, the American and the European model agree on a high near 70° in San Francisco today. Tomorrow looks fog around 69°, with a 2% chance of rain.
CheckWeather.io on iPhoneFree. No ads, no account.San Francisco weather alerts and warnings
active National Weather Service watches, warnings and advisoriesChecking the National Weather Service for active alerts covering San Francisco…
San Francisco weather in numbers
from 30 years of measured normalsSan Francisco swings 28°F across the year, from 73°F highs in October to 45°F lows in February, and January is usually the wettest month in a year that brings about 33 in of precipitation.
The weather map: all three models at once
NWS, American, European side by side around San Francisco and nearby towns.Live rain radar →San Francisco in 3D: the weather on the streets, hour by hour
Rain, sun and real shadows drawn on a 3D map of San Francisco, 48 hours ahead. Drag the timeline, pick what you are doing or where you are going, and read the verdict for that hour.Full screen ↗What are you doing?
Where are you going?
San Francisco hourly forecast: next 14 hours
consensus of the three modelsRain in the next 24 hours, model by model
each model's own hourly precipitation, side by sideLoading the three models…
San Francisco 10-day forecast, out to 14 days
where the models agree, and where they splitSan Francisco, California (CA). Often shortened to SF, SFO, Bay Area. Below we compare what NWS, American, European forecast for San Francisco right now and flag exactly where they disagree, then break down San Francisco's weather month by month and which forecast model has been most accurate here.
We grade every model against the weather that actually happened, so you can see which forecast model is most accurate in United States before you trust any single number.
San Francisco weather by month
what to expect in San Francisco through the yearHere is San Francisco's typical weather in each month: the average daytime high and overnight low in °F, how each month feels, and the wettest month marked. Use it to plan any trip to San Francisco by season.
What San Francisco's weather is like through the year
San Francisco runs from warm summers, with October highs near 73°F, to cool winters, when February lows sit around 45°F (a swing of about 28°F across the year). January is usually the wettest month, and San Francisco sees roughly 33 inches of precipitation annually.
Best time to visit San Francisco
The most comfortable time to visit San Francisco is usually May, June, July and August, when daytime highs sit in the pleasant 60-78°F range and the heaviest January rain is behind you.
Which forecast is most accurate in San Francisco?
CheckWeather Score, graded against the weather that actually happened
The CheckWeather Score blends temperature, wind and rain accuracy, each measured against ERA5 (the recorded weather) over the last 30 days across 1999 cities. Lower error means a higher score. See which forecast model is most accurate in United States, how we measure forecast accuracy, or which model each weather app uses.
Bottom line: over the last 30 days the European model has been the most accurate forecast for San Francisco, scoring 90/100 on our CheckWeather Score, ahead of the American at 77. See the full US accuracy scoreboard for exactly how every model is tested.
What do you think of the forecasts?
your vote countsThe accuracy above is the measured record. This is your opinion: which forecast service do you trust most in United States? Give each 1 to 5 stars.
One vote per service. Anonymous: we store no personal data, only a one-way hash of your connection for a day to stop double votes.
Where the models disagree
temperature and rain, judged separatelyThe models often agree on temperature and still split on rain, and rain is usually what decides whether a plan survives. A wide rain range means the shower is genuinely uncertain, not that the forecast is wrong.