El Cajon weather in October: El Cajon, California: normal highs, lows, rain and records for October
El Cajon in October has a normal high of 81°F and a normal low of 56°F, a daily mean of 68°F, falling from 84°F on the 1st to 79°F by the 31st. Measurable precipitation falls on 2 days in a normal October, 0.54 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 27°C and low of 13°C, 14 mm of precipitation in October.
- NOAA stationEl Cajon
- Station IDUSC00042706
- Location32.80°N 116.93°W
- Elevation495 ft (151 m)
- From the center2 miles
- Population103,291
- Jan 69° 43°
- Feb 69° 44°
- Mar 71° 48°
- Apr 75° 51°
- May 76° 56°
- Jun 81° 59°
- Jul 86° 63°
- Aug 89° 65°
- Sep 87° 62°
- Oct 81° 56°
- Nov 75° 47°
- Dec 69° 42°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is El Cajon in October?
The normal high is 81°F and the normal low 56°F, for a daily mean of 68.3°F. October is 6.4°F cooler than September and 7.1°F warmer than November. October is the 5th warmest month of the year in El Cajon and the 7th wettest. Across the month the normal high falls 5°F, from 84°F on October 1 to 79°F on October 31. From one year to the next October's mean temperature typically moves about 2.6°F either way (NOAA's standard deviation), so roughly two Octobers in three average between 66°F and 71°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 8%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| October 1 | 84°F | 59°F | 3% | 2% |
| October 8 | 82°F | 58°F | 4% | 3% |
| October 15 | 81°F | 56°F | 6% | 4% |
| October 22 | 80°F | 54°F | 7% | 5% |
| October 31 | 79°F | 52°F | 8% | 6% |
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 | 84°F | 59°F | 3% | 2% | 11 h 50 min |
| October 2 | 84°F | 59°F | 3% | 2% | 11 h 50 min |
| October 3 | 83°F | 59°F | 3% | 2% | 11 h 50 min |
| October 4 | 83°F | 59°F | 4% | 2% | 11 h 50 min |
| October 5 | 83°F | 58°F | 4% | 2% | 11 h 50 min |
| October 6 | 83°F | 58°F | 4% | 3% | 11 h 40 min |
| October 7 | 82°F | 58°F | 4% | 3% | 11 h 40 min |
| October 8 | 82°F | 58°F | 4% | 3% | 11 h 40 min |
| October 9 | 82°F | 57°F | 4% | 3% | 11 h 40 min |
| October 10 | 82°F | 57°F | 5% | 3% | 11 h 40 min |
| October 11 | 82°F | 57°F | 5% | 3% | 11 h 30 min |
| October 12 | 82°F | 57°F | 5% | 3% | 11 h 30 min |
| October 13 | 81°F | 56°F | 5% | 3% | 11 h 30 min |
| October 14 | 81°F | 56°F | 5% | 4% | 11 h 30 min |
| October 15 | 81°F | 56°F | 6% | 4% | 11 h 30 min |
| October 16 | 81°F | 56°F | 6% | 4% | 11 h 20 min |
| October 17 | 81°F | 55°F | 6% | 4% | 11 h 20 min |
| October 18 | 81°F | 55°F | 6% | 4% | 11 h 20 min |
| October 19 | 80°F | 55°F | 6% | 4% | 11 h 20 min |
| October 20 | 80°F | 55°F | 7% | 5% | 11 h 20 min |
| October 21 | 80°F | 54°F | 7% | 5% | 11 h 10 min |
| October 22 | 80°F | 54°F | 7% | 5% | 11 h 10 min |
| October 23 | 80°F | 54°F | 7% | 5% | 11 h 10 min |
| October 24 | 80°F | 54°F | 7% | 5% | 11 h 10 min |
| October 25 | 80°F | 53°F | 8% | 5% | 11 h 10 min |
| October 26 | 80°F | 53°F | 8% | 5% | 11 h |
| October 27 | 79°F | 53°F | 8% | 6% | 11 h |
| October 28 | 79°F | 53°F | 8% | 6% | 11 h |
| October 29 | 79°F | 52°F | 8% | 6% | 11 h |
| October 30 | 79°F | 52°F | 8% | 6% | 11 h |
| October 31 | 79°F | 52°F | 8% | 6% | 11 h |
- Normal high
- 81°FOctober average
- Normal low
- 56°FOctober average
- Precipitation
- 0.54 inmonth total
- Days with precipitation
- 20.01 inch or more
- Days at 90°F or more
- 7
- Daylight
- 11 h 50 min to 11 hOctober 1 to October 31
- Days at 70°F or more
- 29
- Days at 80°F or more
- 18
- Sunshine
- 91%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USC00042706; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in El Cajon in October?
On a given October day the chance of 0.01 inch or more is 6% on average, highest around October 31 (8%). In all, 0.54 in falls on 2 days of a normal October.
In a normal October in El Cajon, 7 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00042706.
What are the records for October in El Cajon?
The warmest October temperature on El Cajon's official record (since 1899) is 107°F, on October 1, 1906; the coldest is 30°F, on October 30, 1971. The wettest October brought 5.22 in (2004).
The October mean against the 1991-2020 normal of 68.3°F: 2021 66.4°F (−1.9), 2022 68.8°F (+0.5), 2023 68.7°F (+0.4), 2024 68.9°F (+0.6), 2025 67.5°F (−0.8). 3 of 5 ran warmer than normal.
| October | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 66.4°F | −1.9°F | 1.16 in |
| 2022 | 68.8°F | +0.5°F | 0.20 in |
| 2023 | 68.7°F | +0.4°F | 0.19 in |
| 2024 | 68.9°F | +0.6°F | 0.01 in |
| 2025 | 67.5°F | −0.8°F | 0.37 in |
Source: records: ACIS, NWS threaded record ELJC1thr; recent months: ACIS, station USC00042706. Records and recent months use complete months only.
How does October in El Cajon 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; El Cajon's is 81°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.