San Luis Obispo weather in October: San Luis Obispo, California: normal highs, lows, rain and records for October
San Luis Obispo in October has a normal high of 77°F and a normal low of 50°F, a daily mean of 64°F, falling from 79°F on the 1st to 75°F by the 31st. Measurable precipitation falls on 4 days in a normal October, 0.92 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 25°C and low of 10°C, 23 mm of precipitation in October.
- NOAA stationSan Luis Obispo Airport
- Station IDUSW00093206
- Location35.24°N 120.64°W
- Elevation200 ft (61 m)
- Population49,729
- Jan 65° 41°
- Feb 65° 42°
- Mar 67° 45°
- Apr 69° 46°
- May 72° 48°
- Jun 75° 51°
- Jul 78° 54°
- Aug 79° 55°
- Sep 80° 53°
- Oct 77° 50°
- Nov 71° 45°
- Dec 65° 40°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is San Luis Obispo in October?
The normal high is 77°F and the normal low 50°F, for a daily mean of 63.5°F. October is 2.9°F cooler than September and 5.6°F warmer than November. October is the 4th warmest month of the year in San Luis Obispo and the 7th wettest. Across the month the normal high falls 4°F, from 79°F on October 1 to 75°F on October 31. From one year to the next October's mean temperature typically moves about 2.3°F either way (NOAA's standard deviation), so roughly two Octobers in three average between 61°F and 66°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 17%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| October 1 | 79°F | 52°F | 8% | 2% |
| October 8 | 78°F | 51°F | 10% | 3% |
| October 15 | 78°F | 50°F | 13% | 5% |
| October 22 | 77°F | 49°F | 15% | 5% |
| October 31 | 75°F | 48°F | 17% | 7% |
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 | 79°F | 52°F | 8% | 2% | 11 h 50 min |
| October 2 | 79°F | 52°F | 9% | 3% | 11 h 50 min |
| October 3 | 79°F | 52°F | 9% | 3% | 11 h 50 min |
| October 4 | 78°F | 51°F | 9% | 3% | 11 h 50 min |
| October 5 | 78°F | 51°F | 9% | 3% | 11 h 40 min |
| October 6 | 78°F | 51°F | 10% | 3% | 11 h 40 min |
| October 7 | 78°F | 51°F | 10% | 3% | 11 h 40 min |
| October 8 | 78°F | 51°F | 10% | 3% | 11 h 40 min |
| October 9 | 78°F | 51°F | 11% | 4% | 11 h 30 min |
| October 10 | 78°F | 51°F | 11% | 4% | 11 h 30 min |
| October 11 | 78°F | 50°F | 11% | 4% | 11 h 30 min |
| October 12 | 78°F | 50°F | 12% | 4% | 11 h 30 min |
| October 13 | 78°F | 50°F | 12% | 4% | 11 h 30 min |
| October 14 | 78°F | 50°F | 13% | 4% | 11 h 20 min |
| October 15 | 78°F | 50°F | 13% | 5% | 11 h 20 min |
| October 16 | 77°F | 50°F | 13% | 5% | 11 h 20 min |
| October 17 | 77°F | 50°F | 14% | 5% | 11 h 20 min |
| October 18 | 77°F | 50°F | 14% | 5% | 11 h 20 min |
| October 19 | 77°F | 49°F | 14% | 5% | 11 h 10 min |
| October 20 | 77°F | 49°F | 14% | 5% | 11 h 10 min |
| October 21 | 77°F | 49°F | 15% | 5% | 11 h 10 min |
| October 22 | 77°F | 49°F | 15% | 5% | 11 h 10 min |
| October 23 | 77°F | 49°F | 15% | 6% | 11 h |
| October 24 | 76°F | 49°F | 16% | 6% | 11 h |
| October 25 | 76°F | 49°F | 16% | 6% | 11 h |
| October 26 | 76°F | 48°F | 16% | 6% | 11 h |
| October 27 | 76°F | 48°F | 16% | 6% | 11 h |
| October 28 | 76°F | 48°F | 17% | 6% | 10 h 50 min |
| October 29 | 76°F | 48°F | 17% | 6% | 10 h 50 min |
| October 30 | 75°F | 48°F | 17% | 6% | 10 h 50 min |
| October 31 | 75°F | 48°F | 17% | 7% | 10 h 50 min |
- Normal high
- 77°FOctober average
- Normal low
- 50°FOctober average
- Precipitation
- 0.92 inmonth total
- Days with precipitation
- 40.01 inch or more
- Days at 90°F or more
- 4
- Daylight
- 11 h 50 min to 10 h 50 minOctober 1 to October 31
- Days at 70°F or more
- 25
- Days at 80°F or more
- 12
- Sunshine
- 91%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00093206; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in San Luis Obispo in October?
On a given October day the chance of 0.01 inch or more is 13% on average, highest around October 31 (17%). In all, 0.92 in falls on 4 days of a normal October.
In a normal October in San Luis Obispo, 4 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00093206.
What are the records for October in San Luis Obispo?
The warmest October temperature on this station's record (since 1998) is 108°F, on October 24, 2017; the coldest is 33°F, on October 31, 2019. The wettest October brought 4.57 in (2004).
The October mean against the 1991-2020 normal of 63.5°F: 2021 63.0°F (−0.5), 2022 63.7°F (+0.2), 2023 68.2°F (+4.7), 2024 66.2°F (+2.7), 2025 63.2°F (−0.3). 3 of 5 ran warmer than normal.
| October | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 63.0°F | −0.5°F | 1.70 in |
| 2022 | 63.7°F | +0.2°F | 0.00 in |
| 2023 | 68.2°F | +4.7°F | 0.00 in |
| 2024 | 66.2°F | +2.7°F | 0.00 in |
| 2025 | 63.2°F | −0.3°F | 1.54 in |
Source: records: ACIS, station USW00093206; recent months: ACIS, station USW00093206. Records and recent months use complete months only.
How does October in San Luis Obispo 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 Luis Obispo's is 77°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.
Other months and places
- San Luis Obispo in September80°F by day, 53°F at night
- San Luis Obispo in November71°F by day, 45°F at night
- San Luis Obispo 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