San Angelo weather in September: San Angelo, Texas: normal highs, lows, rain and records for September
San Angelo in September has a normal high of 89°F and a normal low of 65°F, a daily mean of 77°F, falling from 93°F on the 1st to 86°F by the 30th. Measurable precipitation falls on 5 days in a normal September, 2.51 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 32°C and low of 18°C, 64 mm of precipitation in September.
- NOAA stationSan Angelo Mathis Field Airport
- Station IDUSW00023034
- Location31.37°N 100.49°W
- Elevation1,890 ft (576 m)
- From the center5 miles
- Population100,159
- Jan 61° 34°
- Feb 65° 38°
- Mar 73° 46°
- Apr 82° 53°
- May 89° 62°
- Jun 94° 70°
- Jul 97° 72°
- Aug 97° 72°
- Sep 89° 65°
- Oct 81° 54°
- Nov 69° 43°
- Dec 62° 35°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is San Angelo in September?
The normal high is 89°F and the normal low 65°F, for a daily mean of 77.0°F. September is 7.1°F cooler than August and 9.9°F warmer than October. September is the 4th warmest month of the year in San Angelo and the 2nd wettest. Across the month the normal high falls 7°F, from 93°F on September 1 to 86°F on September 30. From one year to the next September's mean temperature typically moves about 2.5°F either way (NOAA's standard deviation), so roughly two Septembers in three average between 75°F and 80°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 19%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| September 1 | 93°F | 69°F | 19% | 11% |
| September 8 | 91°F | 67°F | 19% | 11% |
| September 15 | 90°F | 65°F | 18% | 11% |
| September 22 | 88°F | 63°F | 18% | 10% |
| September 30 | 86°F | 60°F | 17% | 10% |
Every day of September: normal high, low and chance of precipitation (warmest afternoon September 1, coldest night September 30)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| September 1 | 93°F | 69°F | 19% | 11% | 12 h 50 min |
| September 2 | 93°F | 69°F | 19% | 11% | 12 h 50 min |
| September 3 | 93°F | 68°F | 19% | 11% | 12 h 50 min |
| September 4 | 92°F | 68°F | 19% | 11% | 12 h 40 min |
| September 5 | 92°F | 68°F | 19% | 11% | 12 h 40 min |
| September 6 | 92°F | 68°F | 19% | 11% | 12 h 40 min |
| September 7 | 92°F | 67°F | 19% | 11% | 12 h 40 min |
| September 8 | 91°F | 67°F | 19% | 11% | 12 h 40 min |
| September 9 | 91°F | 67°F | 18% | 11% | 12 h 40 min |
| September 10 | 91°F | 66°F | 18% | 11% | 12 h 30 min |
| September 11 | 91°F | 66°F | 18% | 11% | 12 h 30 min |
| September 12 | 90°F | 66°F | 18% | 11% | 12 h 30 min |
| September 13 | 90°F | 66°F | 18% | 11% | 12 h 30 min |
| September 14 | 90°F | 65°F | 18% | 11% | 12 h 30 min |
| September 15 | 90°F | 65°F | 18% | 11% | 12 h 20 min |
| September 16 | 89°F | 65°F | 18% | 11% | 12 h 20 min |
| September 17 | 89°F | 64°F | 18% | 11% | 12 h 20 min |
| September 18 | 89°F | 64°F | 18% | 11% | 12 h 20 min |
| September 19 | 89°F | 64°F | 18% | 11% | 12 h 20 min |
| September 20 | 88°F | 63°F | 18% | 11% | 12 h 10 min |
| September 21 | 88°F | 63°F | 18% | 10% | 12 h 10 min |
| September 22 | 88°F | 63°F | 18% | 10% | 12 h 10 min |
| September 23 | 88°F | 62°F | 18% | 10% | 12 h 10 min |
| September 24 | 87°F | 62°F | 17% | 10% | 12 h 10 min |
| September 25 | 87°F | 62°F | 17% | 10% | 12 h 10 min |
| September 26 | 87°F | 61°F | 17% | 10% | 12 h |
| September 27 | 87°F | 61°F | 17% | 10% | 12 h |
| September 28 | 86°F | 61°F | 17% | 10% | 12 h |
| September 29 | 86°F | 60°F | 17% | 10% | 12 h |
| September 30 | 86°F | 60°F | 17% | 10% | 12 h |
- Normal high
- 89°FSeptember average
- Normal low
- 65°FSeptember average
- Precipitation
- 2.51 inmonth total
- Days with precipitation
- 50.01 inch or more
- Days at 90°F or more
- 15
- Daylight
- 12 h 50 min to 12 hSeptember 1 to September 30
- Days at 70°F or more
- 30
- Days at 80°F or more
- 27
- Sunshine
- 83%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00023034; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in San Angelo in September?
On a given September day the chance of 0.01 inch or more is 18% on average, highest around September 1 (19%). In all, 2.51 in falls on 5 days of a normal September, 1 of them with an inch or more.
In a normal September in San Angelo, 15 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00023034.
How humid and windy is San Angelo in September?
At 3 p.m. the normal temperature is 84°F with 36% relative humidity and a dew point of 54°F; at 6 a.m. it is 62°F with 80% humidity. The wind averages 7.9 mph, most often from the southeast in the afternoon.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 62°F | 56°F | 80% | 6.1 mph | 71% |
| 9 a.m. | 70°F | 58°F | 66% | 8.9 mph | 70% |
| noon | 80°F | 56°F | 45% | 10.6 mph | 70% |
| 3 p.m. | 84°F | 54°F | 36% | 10.2 mph | 80% |
| 6 p.m. | 81°F | 54°F | 39% | 8.9 mph | 79% |
| 9 p.m. | 71°F | 55°F | 57% | 7.1 mph | 85% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00023034. 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 September in San Angelo?
The warmest September temperature on San Angelo's official record (since 1907) is 107°F, on September 1, 1952; the coldest is 35°F, on September 23, 1913. The wettest September brought 11.00 in (1980).
The September mean against the 1991-2020 normal of 77.0°F: 2021 78.0°F (+1.0), 2022 78.5°F (+1.5), 2023 82.3°F (+5.3), 2024 76.1°F (−0.9), 2025 76.8°F (−0.2), 2026 84.6°F (+7.6). 4 of 6 ran warmer than normal.
| September | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 78.0°F | +1.0°F | 0.39 in |
| 2022 | 78.5°F | +1.5°F | 1.77 in |
| 2023 | 82.3°F | +5.3°F | 3.92 in |
| 2024 | 76.1°F | −0.9°F | 5.04 in |
| 2025 | 76.8°F | −0.2°F | 1.80 in |
| 2026 | 84.6°F | +7.6°F | 0.80 in |
Source: records: ACIS, NWS threaded record SJTthr; recent months: ACIS, station USW00023034. Records and recent months use complete months only.
How does September in San Angelo compare across Texas?
Across the 321 places PlainClimate covers in Texas, September normal highs run from 81°F in Hart to 95°F in Presidio; San Angelo's is 89°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.