Georgetown weather in September: Georgetown, Texas: normal highs, lows, rain and records for September
Georgetown in September has a normal high of 90°F and a normal low of 67°F, a daily mean of 78°F, falling from 94°F on the 1st to 86°F by the 30th. Measurable precipitation falls on 6 days in a normal September, 3.96 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 32°C and low of 19°C, 101 mm of precipitation in September.
- NOAA stationGeorgetown Lake
- Station IDUSC00413507
- Location30.68°N 97.72°W
- Elevation874 ft (266 m)
- Population101,344
- Jan 60° 36°
- Feb 65° 40°
- Mar 72° 47°
- Apr 79° 54°
- May 85° 63°
- Jun 92° 70°
- Jul 96° 72°
- Aug 97° 72°
- Sep 90° 67°
- Oct 81° 57°
- Nov 70° 46°
- Dec 62° 38°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Georgetown in September?
The normal high is 90°F and the normal low 67°F, for a daily mean of 78.3°F. September is 6.1°F cooler than August and 9.3°F warmer than October. September is the 4th warmest month of the year in Georgetown and the 3rd wettest. Across the month the normal high falls 8°F, from 94°F on September 1 to 86°F on September 30. From one year to the next September's mean temperature typically moves about 2.4°F either way (NOAA's standard deviation), so roughly two Septembers in three average between 76°F and 81°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 21%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| September 1 | 94°F | 70°F | 20% | 15% |
| September 8 | 92°F | 69°F | 21% | 15% |
| September 15 | 90°F | 67°F | 21% | 14% |
| September 22 | 89°F | 65°F | 20% | 13% |
| September 30 | 86°F | 62°F | 19% | 13% |
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 | 94°F | 70°F | 20% | 15% | 12 h 50 min |
| September 2 | 94°F | 70°F | 20% | 15% | 12 h 50 min |
| September 3 | 93°F | 70°F | 20% | 15% | 12 h 50 min |
| September 4 | 93°F | 69°F | 20% | 15% | 12 h 40 min |
| September 5 | 93°F | 69°F | 20% | 15% | 12 h 40 min |
| September 6 | 93°F | 69°F | 20% | 15% | 12 h 40 min |
| September 7 | 92°F | 69°F | 21% | 15% | 12 h 40 min |
| September 8 | 92°F | 69°F | 21% | 15% | 12 h 40 min |
| September 9 | 92°F | 68°F | 21% | 15% | 12 h 30 min |
| September 10 | 92°F | 68°F | 21% | 15% | 12 h 30 min |
| September 11 | 91°F | 68°F | 21% | 15% | 12 h 30 min |
| September 12 | 91°F | 68°F | 21% | 14% | 12 h 30 min |
| September 13 | 91°F | 67°F | 21% | 14% | 12 h 30 min |
| September 14 | 90°F | 67°F | 21% | 14% | 12 h 30 min |
| September 15 | 90°F | 67°F | 21% | 14% | 12 h 20 min |
| September 16 | 90°F | 67°F | 20% | 14% | 12 h 20 min |
| September 17 | 90°F | 66°F | 20% | 14% | 12 h 20 min |
| September 18 | 89°F | 66°F | 20% | 14% | 12 h 20 min |
| September 19 | 89°F | 66°F | 20% | 14% | 12 h 20 min |
| September 20 | 89°F | 66°F | 20% | 14% | 12 h 10 min |
| September 21 | 89°F | 65°F | 20% | 14% | 12 h 10 min |
| September 22 | 89°F | 65°F | 20% | 13% | 12 h 10 min |
| September 23 | 88°F | 65°F | 20% | 13% | 12 h 10 min |
| September 24 | 88°F | 64°F | 19% | 13% | 12 h 10 min |
| September 25 | 88°F | 64°F | 19% | 13% | 12 h 10 min |
| September 26 | 88°F | 64°F | 19% | 13% | 12 h |
| September 27 | 87°F | 63°F | 19% | 13% | 12 h |
| September 28 | 87°F | 63°F | 19% | 13% | 12 h |
| September 29 | 87°F | 63°F | 19% | 13% | 12 h |
| September 30 | 86°F | 62°F | 19% | 13% | 12 h |
- Normal high
- 90°FSeptember average
- Normal low
- 67°FSeptember average
- Precipitation
- 3.96 inmonth total
- Days with precipitation
- 60.01 inch or more
- Days at 90°F or more
- 18
- 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
- 28
- Sunshine
- 82%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USC00413507; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Georgetown in September?
On a given September day the chance of 0.01 inch or more is 20% on average, highest around September 9 (21%). In all, 3.96 in falls on 6 days of a normal September, 1 of them with an inch or more.
In a normal September in Georgetown, 18 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00413507.
What are the records for September in Georgetown?
The September mean against the 1991-2020 normal of 78.3°F: 2022 79.1°F (+0.8), 2023 84.5°F (+6.2), 2024 79.4°F (+1.1). 3 of 3 ran warmer than normal.
| September | Mean | Against normal | Precip. |
|---|---|---|---|
| 2022 | 79.1°F | +0.8°F | 0.86 in |
| 2023 | 84.5°F | +6.2°F | 2.61 in |
| 2024 | 79.4°F | +1.1°F | 1.34 in |
Source: recent months: ACIS, station USC00413507. Records and recent months use complete months only.
How does September in Georgetown 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; Georgetown's is 90°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.