Temperatures in October
It's hot in October in San Francisco with an average temperature of 30°C. Temperatures this month range from a low of 30°C to a high of 31°C. At night, you can expect temperatures between 20°C and 21°C.
Max and Min Temperatures per Day
This chart shows the daily maximum and minimum temperatures in degrees Celsius for San Francisco in October. The red line indicates the max temperatures, and the blue line shows the minimums.
Start of October
The month of October starts in San Francisco with hot temperatures, averaging around 31°C during the day and nights close to 21°C. Plenty of days with a chance of precipitation.
Mid-October
By mid-October, the average daytime temperature stays the same at 31°C, with nights close to 21°C. The chance of precipitation is high during this period.
End of October
By the end of October, the average daytime temperature in San Francisco will be around 31°C, with nights close to 21°C. There’s regular precipitation, but with a bit of luck, you’ll also get some dry and sunny days.
Precipitation in October
In October, there is an average of 269 mm of precipitation, spread over 17 days. The wind speed is around 3 Bft, mostly coming from the Southeast.
Across the whole month, the average precipitation chance is 55% per day. Though that seems frequent, the weather’s variable. There are also a few days with lower precipitation chances.
Precipitation Chance
This chart shows the daily precipitation chance (in percentages) in October for San Francisco. 0% means it never rained on that day in the past 10 years, and 100% means it rained every day. All values in between represent the average chance of precipitation on that day.
San Francisco in October |
London | ||
|---|---|---|---|
 Average Temperature |
30°C | 15°C | |
 High Temp |
31°C | 17°C | |
| Low Temp |
30°C | 13°C | |
 Total Precipitation |
269 mm | 115 mm | |
| Rainy Days |
17 days | 14 days | |
September
UV index
The UV index is a maximum of 8 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
Is October a good time to visit San Francisco?
After some sun? Then October isn’t the best time to be in San Francisco. The temperature is pleasant, but there’s too much chance of rain this month.
The hurricane season in San Francisco runs from June to November.
Temperature records for San Francisco in October
With 33°C, San Francisco hit the highest temperature in the last 10 years in October 2016. The lowest daytime temperature in this month was 21°C in 2023. The extreme night temperatures ranged from a low of 11°C to a high of 24°C.
Check out the climate of San Francisco for all months and discover the best travel time
Daily Temperature in October in San Francisco
This chart shows the average daily temperatures, both day and night, for each day in October in San Francisco, measured in degrees Celsius. The red line represents the maximum temperatures, while the blue line shows the minimums. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, gives an overview of the average daily temperatures during this month.
Daily Precipitation in October in San Francisco
The chart below shows the average daily precipitation in October for San Francisco, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are shown at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that rain is more likely. But it’s still an average, so each day can be different. Based on historical weather data for October, you can expect around 17 days of rain in San Francisco.
Daily UV Index in October in San Francisco
This chart shows the average daily UV index in October in San Francisco, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Temperature in October in San Francisco Over the Years
This chart shows the average temperature in October in San Francisco, measured in degrees Celsius, over the past years.
Total Precipitation in October in San Francisco Over the Years
This chart shows the average precipitation in October in San Francisco, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail.
Daily climate in October for San Francisco
Click on a specific day in October for detailed info on the typical weather on that day in San Francisco. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in October in San Francisco
Have you been to San Francisco in October?
Share your weather experience in October in San Francisco.
Average Weather in San Francisco by Month
Click on a month below to see detailed weather info for San Francisco. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
Or check out the climate of San Francisco for all months at once
