San Diego weather in October: San Diego, California: normal highs, lows, rain and records for October
San Diego in October has a normal high of 75°F and a normal low of 62°F, a daily mean of 68°F, falling from 76°F on the 1st to 73°F by the 31st. Measurable precipitation falls on 2 days in a normal October, 0.50 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 24°C and low of 16°C, 13 mm of precipitation in October.
- NOAA stationSan Diego Lindbergh Field
- Station IDUSW00023188
- Location32.73°N 117.18°W
- Elevation15 ft (5 m)
- From the center6 miles
- Population1,404,452
- Jan 66° 50°
- Feb 66° 52°
- Mar 67° 55°
- Apr 69° 57°
- May 70° 60°
- Jun 72° 63°
- Jul 75° 66°
- Aug 77° 68°
- Sep 77° 66°
- Oct 75° 62°
- Nov 71° 55°
- Dec 66° 50°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is San Diego in October?
The normal high is 75°F and the normal low 62°F, for a daily mean of 68.1°F. October is 3.6°F cooler than September and 5.4°F warmer than November. October is the 4th warmest month of the year in San Diego and the 7th wettest. Across the month the normal high falls 3°F, from 76°F on October 1 to 73°F on October 31. From one year to the next October's mean temperature typically moves about 2.2°F either way (NOAA's standard deviation), so roughly two Octobers in three average between 66°F and 70°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 10%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| October 1 | 76°F | 64°F | 5% | 2% |
| October 8 | 75°F | 63°F | 6% | 2% |
| October 15 | 75°F | 62°F | 7% | 3% |
| October 22 | 74°F | 60°F | 8% | 4% |
| October 31 | 73°F | 59°F | 10% | 5% |
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 | 76°F | 64°F | 5% | 2% | 11 h 50 min |
| October 2 | 76°F | 64°F | 5% | 2% | 11 h 50 min |
| October 3 | 76°F | 64°F | 5% | 2% | 11 h 50 min |
| October 4 | 76°F | 64°F | 6% | 2% | 11 h 50 min |
| October 5 | 75°F | 64°F | 6% | 2% | 11 h 50 min |
| October 6 | 75°F | 63°F | 6% | 2% | 11 h 40 min |
| October 7 | 75°F | 63°F | 6% | 2% | 11 h 40 min |
| October 8 | 75°F | 63°F | 6% | 2% | 11 h 40 min |
| October 9 | 75°F | 63°F | 6% | 3% | 11 h 40 min |
| October 10 | 75°F | 63°F | 7% | 3% | 11 h 40 min |
| October 11 | 75°F | 63°F | 7% | 3% | 11 h 30 min |
| October 12 | 75°F | 62°F | 7% | 3% | 11 h 30 min |
| October 13 | 75°F | 62°F | 7% | 3% | 11 h 30 min |
| October 14 | 75°F | 62°F | 7% | 3% | 11 h 30 min |
| October 15 | 75°F | 62°F | 7% | 3% | 11 h 30 min |
| October 16 | 75°F | 62°F | 8% | 3% | 11 h 20 min |
| October 17 | 75°F | 61°F | 8% | 4% | 11 h 20 min |
| October 18 | 75°F | 61°F | 8% | 4% | 11 h 20 min |
| October 19 | 74°F | 61°F | 8% | 4% | 11 h 20 min |
| October 20 | 74°F | 61°F | 8% | 4% | 11 h 20 min |
| October 21 | 74°F | 61°F | 8% | 4% | 11 h 10 min |
| October 22 | 74°F | 60°F | 8% | 4% | 11 h 10 min |
| October 23 | 74°F | 60°F | 9% | 4% | 11 h 10 min |
| October 24 | 74°F | 60°F | 9% | 4% | 11 h 10 min |
| October 25 | 74°F | 60°F | 9% | 4% | 11 h 10 min |
| October 26 | 74°F | 60°F | 9% | 4% | 11 h |
| October 27 | 74°F | 59°F | 9% | 4% | 11 h |
| October 28 | 74°F | 59°F | 9% | 5% | 11 h |
| October 29 | 74°F | 59°F | 9% | 5% | 11 h |
| October 30 | 74°F | 59°F | 10% | 5% | 11 h |
| October 31 | 73°F | 59°F | 10% | 5% | 11 h |
- Normal high
- 75°FOctober average
- Normal low
- 62°FOctober average
- Precipitation
- 0.50 inmonth total
- Days with precipitation
- 20.01 inch or more
- Days at 90°F or more
- 1
- Daylight
- 11 h 50 min to 11 hOctober 1 to October 31
- Days at 70°F or more
- 23
- Days at 80°F or more
- 6
- Sunshine
- 81%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00023188; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in San Diego in October?
On a given October day the chance of 0.01 inch or more is 7% on average, highest around October 31 (10%). In all, 0.50 in falls on 2 days of a normal October.
In a normal October in San Diego, 1 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00023188.
How humid and windy is San Diego in October?
At 3 p.m. the normal temperature is 70°F with 53% relative humidity and a dew point of 52°F; at 6 a.m. it is 59°F with 69% humidity. The wind averages 4.9 mph, most often from the west-northwest in the afternoon.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 59°F | 49°F | 69% | 2.8 mph | 47% |
| 9 a.m. | 66°F | 49°F | 55% | 4.3 mph | 45% |
| noon | 71°F | 50°F | 49% | 9.1 mph | 54% |
| 3 p.m. | 70°F | 52°F | 53% | 9.6 mph | 51% |
| 6 p.m. | 66°F | 54°F | 65% | 5.4 mph | 51% |
| 9 p.m. | 64°F | 54°F | 69% | 3.0 mph | 56% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00023188. Hourly normals exist only for NOAA's first-order stations; a dash where NOAA publishes no value for that hour (the sky at some hours).
What are the records for October in San Diego?
The warmest October temperature on San Diego's official record (since 1874) is 107°F, on October 14, 1961; the coldest is 43°F, on October 30, 1971. The wettest October brought 4.98 in (2004).
The October mean against the 1991-2020 normal of 68.1°F: 2021 66.8°F (−1.3), 2022 68.2°F (+0.1), 2023 67.4°F (−0.7), 2024 66.7°F (−1.4), 2025 66.2°F (−1.9). 1 of 5 ran warmer than normal.
| October | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 66.8°F | −1.3°F | 1.01 in |
| 2022 | 68.2°F | +0.1°F | 0.09 in |
| 2023 | 67.4°F | −0.7°F | 0.01 in |
| 2024 | 66.7°F | −1.4°F | 0.00 in |
| 2025 | 66.2°F | −1.9°F | 0.41 in |
Source: records: ACIS, NWS threaded record SANthr; recent months: ACIS, station USW00023188. Records and recent months use complete months only.
How does October in San Diego 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 Diego's is 75°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.
Other months and places
- San Diego in September77°F by day, 66°F at night
- San Diego in November71°F by day, 55°F at night
- San Diego 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