Santa Ana weather in October: Santa Ana, California: normal highs, lows, rain and records for October
Santa Ana in October has a normal high of 77°F and a normal low of 59°F, a daily mean of 68°F, falling from 78°F on the 1st to 75°F by the 31st. Measurable precipitation falls on 3 days in a normal October, 0.54 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 25°C and low of 15°C, 14 mm of precipitation in October.
- NOAA stationSanta Ana John Wayne Airport
- Station IDUSW00093184
- Location33.68°N 117.87°W
- Elevation54 ft (17 m)
- From the center4 miles
- Population316,184
- Jan 67° 49°
- Feb 67° 50°
- Mar 68° 52°
- Apr 70° 55°
- May 71° 59°
- Jun 74° 63°
- Jul 79° 66°
- Aug 80° 67°
- Sep 80° 65°
- Oct 77° 59°
- Nov 72° 53°
- Dec 67° 48°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Santa Ana in October?
The normal high is 77°F and the normal low 59°F, for a daily mean of 67.8°F. October is 4.7°F cooler than September and 5.2°F warmer than November. October is the 5th warmest month of the year in Santa Ana and the 6th wettest. Across the month the normal high falls 3°F, from 78°F on October 1 to 75°F on October 31. From one year to the next October's mean temperature typically moves about 2.4°F either way (NOAA's standard deviation), so roughly two Octobers in three average between 65°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 13%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| October 1 | 78°F | 62°F | 6% | 2% |
| October 8 | 77°F | 61°F | 8% | 3% |
| October 15 | 77°F | 59°F | 10% | 4% |
| October 22 | 76°F | 58°F | 12% | 4% |
| October 31 | 75°F | 56°F | 13% | 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 | 78°F | 62°F | 6% | 2% | 11 h 50 min |
| October 2 | 78°F | 62°F | 6% | 2% | 11 h 50 min |
| October 3 | 78°F | 62°F | 7% | 2% | 11 h 50 min |
| October 4 | 78°F | 62°F | 7% | 2% | 11 h 50 min |
| October 5 | 78°F | 61°F | 7% | 3% | 11 h 40 min |
| October 6 | 77°F | 61°F | 8% | 3% | 11 h 40 min |
| October 7 | 77°F | 61°F | 8% | 3% | 11 h 40 min |
| October 8 | 77°F | 61°F | 8% | 3% | 11 h 40 min |
| October 9 | 77°F | 61°F | 8% | 3% | 11 h 40 min |
| October 10 | 77°F | 60°F | 9% | 3% | 11 h 30 min |
| October 11 | 77°F | 60°F | 9% | 3% | 11 h 30 min |
| October 12 | 77°F | 60°F | 9% | 3% | 11 h 30 min |
| October 13 | 77°F | 60°F | 10% | 4% | 11 h 30 min |
| October 14 | 77°F | 60°F | 10% | 4% | 11 h 30 min |
| October 15 | 77°F | 59°F | 10% | 4% | 11 h 20 min |
| October 16 | 77°F | 59°F | 11% | 4% | 11 h 20 min |
| October 17 | 76°F | 59°F | 11% | 4% | 11 h 20 min |
| October 18 | 76°F | 59°F | 11% | 4% | 11 h 20 min |
| October 19 | 76°F | 59°F | 11% | 4% | 11 h 20 min |
| October 20 | 76°F | 58°F | 12% | 4% | 11 h 10 min |
| October 21 | 76°F | 58°F | 12% | 4% | 11 h 10 min |
| October 22 | 76°F | 58°F | 12% | 4% | 11 h 10 min |
| October 23 | 76°F | 58°F | 12% | 4% | 11 h 10 min |
| October 24 | 76°F | 58°F | 12% | 4% | 11 h 10 min |
| October 25 | 76°F | 57°F | 12% | 4% | 11 h |
| October 26 | 76°F | 57°F | 13% | 5% | 11 h |
| October 27 | 76°F | 57°F | 13% | 5% | 11 h |
| October 28 | 75°F | 57°F | 13% | 5% | 11 h |
| October 29 | 75°F | 57°F | 13% | 5% | 11 h |
| October 30 | 75°F | 57°F | 13% | 5% | 10 h 50 min |
| October 31 | 75°F | 56°F | 13% | 5% | 10 h 50 min |
- Normal high
- 77°FOctober average
- Normal low
- 59°FOctober average
- Precipitation
- 0.54 inmonth total
- Days with precipitation
- 30.01 inch or more
- Days at 90°F or more
- 3
- Daylight
- 11 h 50 min to 10 h 50 minOctober 1 to October 31
- Days at 70°F or more
- 27
- Days at 80°F or more
- 10
- Sunshine
- 88%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00093184; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Santa Ana in October?
On a given October day the chance of 0.01 inch or more is 10% on average, highest around October 31 (13%). In all, 0.54 in falls on 3 days of a normal October.
In a normal October in Santa Ana, 3 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00093184.
What are the records for October in Santa Ana?
The warmest October temperature on this station's record (since 1999) is 106°F, on October 24, 2017; the coldest is 46°F, on October 29, 2009. The wettest October brought 6.18 in (2004).
The October mean against the 1991-2020 normal of 67.8°F: 2021 68.2°F (+0.4), 2022 71.6°F (+3.8), 2023 70.0°F (+2.2), 2024 68.0°F (+0.2), 2025 67.7°F (−0.1). 4 of 5 ran warmer than normal.
| October | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 68.2°F | +0.4°F | 0.79 in |
| 2022 | 71.6°F | +3.8°F | 0.35 in |
| 2023 | 70.0°F | +2.2°F | 0.00 in |
| 2024 | 68.0°F | +0.2°F | 0.00 in |
| 2025 | 67.7°F | −0.1°F | 0.83 in |
Source: records: ACIS, station USW00093184; recent months: ACIS, station USW00093184. Records and recent months use complete months only.
How does October in Santa Ana 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; Santa Ana's is 77°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.
Other months and places
- Santa Ana in September80°F by day, 65°F at night
- Santa Ana in November72°F by day, 53°F at night
- Santa Ana 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