San Francisco weather in October: San Francisco, California: normal highs, lows, rain and records for October
San Francisco in October has a normal high of 70°F and a normal low of 54°F, a daily mean of 62°F, falling from 71°F on the 1st to 68°F by the 31st. Measurable precipitation falls on 4 days in a normal October, 0.94 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 21°C and low of 12°C, 24 mm of precipitation in October.
- NOAA stationSan Francisco Downtown
- Station IDUSW00023272
- Location37.77°N 122.43°W
- Elevation150 ft (46 m)
- Population827,526
- Jan 58° 47°
- Feb 60° 48°
- Mar 62° 49°
- Apr 63° 50°
- May 64° 51°
- Jun 67° 53°
- Jul 66° 54°
- Aug 68° 56°
- Sep 70° 56°
- Oct 70° 54°
- Nov 64° 51°
- Dec 58° 47°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is San Francisco in October?
The normal high is 70°F and the normal low 54°F, for a daily mean of 62.1°F. October is 0.8°F cooler than September and 4.9°F warmer than November. October is the 2nd warmest month of the year in San Francisco and the 7th wettest. Across the month the normal high falls 3°F, from 71°F on October 1 to 68°F on October 31. From one year to the next October's mean temperature typically moves about 1.7°F either way (NOAA's standard deviation), so roughly two Octobers in three average between 60°F and 64°F.
Bars above: each day's normal high to low. Columns below: the chance of 0.01 inch or more of precipitation that day, on a scale of 0 to 100% (highest 19%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| October 1 | 71°F | 55°F | 7% | 3% |
| October 8 | 71°F | 55°F | 9% | 4% |
| October 15 | 70°F | 55°F | 11% | 6% |
| October 22 | 69°F | 54°F | 14% | 8% |
| October 31 | 68°F | 53°F | 19% | 11% |
Every day of October: normal high, low and chance of precipitation (warmest afternoon October 1, coldest night October 31)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| October 1 | 71°F | 55°F | 7% | 3% | 11 h 50 min |
| October 2 | 71°F | 55°F | 7% | 3% | 11 h 50 min |
| October 3 | 71°F | 55°F | 7% | 3% | 11 h 50 min |
| October 4 | 71°F | 55°F | 8% | 4% | 11 h 40 min |
| October 5 | 71°F | 55°F | 8% | 4% | 11 h 40 min |
| October 6 | 71°F | 55°F | 8% | 4% | 11 h 40 min |
| October 7 | 71°F | 55°F | 8% | 4% | 11 h 40 min |
| October 8 | 71°F | 55°F | 9% | 4% | 11 h 30 min |
| October 9 | 71°F | 55°F | 9% | 5% | 11 h 30 min |
| October 10 | 71°F | 55°F | 9% | 5% | 11 h 30 min |
| October 11 | 71°F | 55°F | 10% | 5% | 11 h 30 min |
| October 12 | 70°F | 55°F | 10% | 5% | 11 h 20 min |
| October 13 | 70°F | 55°F | 10% | 5% | 11 h 20 min |
| October 14 | 70°F | 55°F | 11% | 6% | 11 h 20 min |
| October 15 | 70°F | 55°F | 11% | 6% | 11 h 20 min |
| October 16 | 70°F | 55°F | 11% | 6% | 11 h 10 min |
| October 17 | 70°F | 55°F | 12% | 6% | 11 h 10 min |
| October 18 | 70°F | 54°F | 12% | 7% | 11 h 10 min |
| October 19 | 70°F | 54°F | 13% | 7% | 11 h 10 min |
| October 20 | 70°F | 54°F | 13% | 7% | 11 h 10 min |
| October 21 | 70°F | 54°F | 14% | 8% | 11 h |
| October 22 | 69°F | 54°F | 14% | 8% | 11 h |
| October 23 | 69°F | 54°F | 15% | 8% | 11 h |
| October 24 | 69°F | 54°F | 15% | 8% | 11 h |
| October 25 | 69°F | 54°F | 16% | 9% | 10 h 50 min |
| October 26 | 69°F | 54°F | 16% | 9% | 10 h 50 min |
| October 27 | 69°F | 53°F | 17% | 9% | 10 h 50 min |
| October 28 | 68°F | 53°F | 17% | 10% | 10 h 50 min |
| October 29 | 68°F | 53°F | 18% | 10% | 10 h 50 min |
| October 30 | 68°F | 53°F | 18% | 10% | 10 h 40 min |
| October 31 | 68°F | 53°F | 19% | 11% | 10 h 40 min |
- Normal high
- 70°FOctober average
- Normal low
- 54°FOctober average
- Precipitation
- 0.94 inmonth total
- Days with precipitation
- 40.01 inch or more
- Days at 90°F or more
- 1
- Daylight
- 11 h 50 min to 10 h 40 minOctober 1 to October 31
- Days at 70°F or more
- 14
- Days at 80°F or more
- 5
- Sunshine
- 83%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00023272; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in San Francisco in October?
On a given October day the chance of 0.01 inch or more is 12% on average, highest around October 31 (19%). In all, 0.94 in falls on 4 days of a normal October.
In a normal October in San Francisco, 1 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00023272.
What are the records for October in San Francisco?
The warmest October temperature on this station's record (since 1874) is 102°F, on October 5, 1987; the coldest is 43°F, on October 31, 1935. The wettest October brought 7.28 in (1889).
The October mean against the 1991-2020 normal of 62.1°F: 2021 61.1°F (−1.0), 2022 59.8°F (−2.3), 2024 64.9°F (+2.8), 2025 62.5°F (+0.4). 2 of 4 ran warmer than normal.
| October | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 61.1°F | −1.0°F | 7.04 in |
| 2022 | 59.8°F | −2.3°F | 0.00 in |
| 2024 | 64.9°F | +2.8°F | 0.11 in |
| 2025 | 62.5°F | +0.4°F | 1.01 in |
Source: records: ACIS, station USW00023272; recent months: ACIS, station USW00023272. Records and recent months use complete months only.
How does October in San Francisco compare across California?
Across the 219 places PlainClimate covers in California, October normal highs run from 58°F in Tahoma to 93°F in Brawley; San Francisco's is 70°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.
Other months and places
- San Francisco in September70°F by day, 56°F at night
- San Francisco in November64°F by day, 51°F at night
- San Francisco through the yearEvery month, frost dates, records and recent years
- California in OctoberThe statewide normal and the warmest and coolest places
- Brawley: California's warmest Octobernormal high 93°F