San Antonio weather in October: San Antonio, Texas: normal highs, lows, rain and records for October
San Antonio in October has a normal high of 82°F and a normal low of 60°F, a daily mean of 71°F, falling from 87°F on the 1st to 77°F by the 31st. Measurable precipitation falls on 6 days in a normal October, 3.75 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 28°C and low of 16°C, 95 mm of precipitation in October.
- NOAA stationSan Antonio International Airport
- Station IDUSW00012921
- Location29.54°N 98.48°W
- Elevation789 ft (241 m)
- From the center6 miles
- Population1,526,656
- Jan 63° 41°
- Feb 68° 45°
- Mar 74° 52°
- Apr 80° 58°
- May 87° 66°
- Jun 92° 73°
- Jul 95° 75°
- Aug 96° 75°
- Sep 90° 70°
- Oct 82° 60°
- Nov 72° 50°
- Dec 65° 42°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is San Antonio in October?
The normal high is 82°F and the normal low 60°F, for a daily mean of 71.3°F. October is 8.6°F cooler than September and 10.6°F warmer than November. October is the 6th warmest month of the year in San Antonio and the 3rd wettest. Across the month the normal high falls 10°F, from 87°F on October 1 to 77°F on October 31. From one year to the next October's mean temperature typically moves about 1.9°F either way (NOAA's standard deviation), so roughly two Octobers in three average between 69°F and 73°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 22%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| October 1 | 87°F | 65°F | 21% | 13% |
| October 8 | 85°F | 63°F | 20% | 13% |
| October 15 | 83°F | 61°F | 21% | 12% |
| October 22 | 80°F | 58°F | 21% | 12% |
| October 31 | 77°F | 55°F | 22% | 12% |
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 | 87°F | 65°F | 21% | 13% | 11 h 50 min |
| October 2 | 86°F | 65°F | 20% | 13% | 11 h 50 min |
| October 3 | 86°F | 65°F | 20% | 13% | 11 h 50 min |
| October 4 | 86°F | 64°F | 20% | 13% | 11 h 50 min |
| October 5 | 86°F | 64°F | 20% | 13% | 11 h 50 min |
| October 6 | 85°F | 64°F | 20% | 13% | 11 h 50 min |
| October 7 | 85°F | 64°F | 20% | 13% | 11 h 40 min |
| October 8 | 85°F | 63°F | 20% | 13% | 11 h 40 min |
| October 9 | 85°F | 63°F | 20% | 13% | 11 h 40 min |
| October 10 | 84°F | 63°F | 20% | 13% | 11 h 40 min |
| October 11 | 84°F | 62°F | 20% | 13% | 11 h 40 min |
| October 12 | 84°F | 62°F | 20% | 13% | 11 h 40 min |
| October 13 | 83°F | 62°F | 20% | 13% | 11 h 30 min |
| October 14 | 83°F | 61°F | 21% | 13% | 11 h 30 min |
| October 15 | 83°F | 61°F | 21% | 12% | 11 h 30 min |
| October 16 | 82°F | 61°F | 21% | 12% | 11 h 30 min |
| October 17 | 82°F | 60°F | 21% | 12% | 11 h 30 min |
| October 18 | 82°F | 60°F | 21% | 12% | 11 h 30 min |
| October 19 | 81°F | 60°F | 21% | 12% | 11 h 20 min |
| October 20 | 81°F | 59°F | 21% | 12% | 11 h 20 min |
| October 21 | 81°F | 59°F | 21% | 12% | 11 h 20 min |
| October 22 | 80°F | 58°F | 21% | 12% | 11 h 20 min |
| October 23 | 80°F | 58°F | 21% | 12% | 11 h 20 min |
| October 24 | 80°F | 58°F | 21% | 12% | 11 h 10 min |
| October 25 | 79°F | 57°F | 21% | 12% | 11 h 10 min |
| October 26 | 79°F | 57°F | 21% | 12% | 11 h 10 min |
| October 27 | 79°F | 57°F | 22% | 12% | 11 h 10 min |
| October 28 | 78°F | 56°F | 22% | 12% | 11 h 10 min |
| October 29 | 78°F | 56°F | 22% | 12% | 11 h 10 min |
| October 30 | 77°F | 56°F | 22% | 12% | 11 h 10 min |
| October 31 | 77°F | 55°F | 22% | 12% | 11 h |
- Normal high
- 82°FOctober average
- Normal low
- 60°FOctober average
- Precipitation
- 3.75 inmonth total
- Days with precipitation
- 60.01 inch or more
- Days at 90°F or more
- 6
- 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
- 23
- Sunshine
- 81%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00012921; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in San Antonio in October?
On a given October day the chance of 0.01 inch or more is 21% on average, highest around October 31 (22%). In all, 3.75 in falls on 6 days of a normal October, 1 of them with an inch or more.
In a normal October in San Antonio, 6 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00012921.
How humid and windy is San Antonio in October?
At 3 p.m. the normal temperature is 75°F with 43% relative humidity and a dew point of 51°F; at 6 a.m. it is 58°F with 82% humidity. The wind averages 7.8 mph, most often from the southeast in the afternoon.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 58°F | 52°F | 82% | 6.0 mph | 39% |
| 9 a.m. | 64°F | 54°F | 69% | 7.7 mph | 38% |
| noon | 72°F | 53°F | 51% | 9.9 mph | 38% |
| 3 p.m. | 75°F | 51°F | 43% | 9.8 mph | 41% |
| 6 p.m. | 70°F | 51°F | 51% | 8.2 mph | 48% |
| 9 p.m. | 65°F | 53°F | 65% | 7.4 mph | 53% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00012921. 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 Antonio?
The warmest October temperature on San Antonio's official record (since 1885) is 99°F, on October 7, 1937; the coldest is 27°F, on October 31, 1993. The wettest October brought 18.07 in (1998).
The October mean against the 1991-2020 normal of 71.3°F: 2021 73.3°F (+2.0), 2022 72.3°F (+1.0), 2023 73.4°F (+2.1), 2024 78.5°F (+7.2), 2025 76.7°F (+5.4). 5 of 5 ran warmer than normal.
| October | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 73.3°F | +2.0°F | 6.58 in |
| 2022 | 72.3°F | +1.0°F | 1.05 in |
| 2023 | 73.4°F | +2.1°F | 3.21 in |
| 2024 | 78.5°F | +7.2°F | 0.01 in |
| 2025 | 76.7°F | +5.4°F | 1.19 in |
Source: records: ACIS, NWS threaded record SATthr; recent months: ACIS, station USW00012921. Records and recent months use complete months only.
How does October in San Antonio compare across Texas?
Across the 321 places PlainClimate covers in Texas, October normal highs run from 71°F in Channing to 89°F in McAllen; San Antonio's is 82°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.