Grey Forest Weather in September
Average highs run from 97°F on September 1 to 89°F on September 30, and lows from 73°F to 67°F. Normal precipitation for the month is 3.14 in over about 7 wet days.
September day by day
The normal high and low for each date, and the record, in °F.
- Normal low
- Normal high
- Record high
- Record low
September at a glance
- Average high
- 93°F
- Average low
- 70°F
- Precipitation
- 3.14 in
- Record high
- 109°FSep 6, 2000
- Record low
- 35°FSep 30, 1908
- Chance of a freeze
- 0%
- Days of 90°F or more
- 18.8
- Daylight
- 12 h 45 min to 11 h 53 min
- Cloud cover
- 48%
- Humidity
- 67%
- Dew point
- 65°F
- Wind
- 8.1 mph
Every day of the month
A wet day has at least 0.01 inch of precipitation.
| Date | Normal high | Normal low | Record high | Record low | Chance wet |
|---|---|---|---|---|---|
| Sep 1 | 97°F | 73°F | 102°F 1951 | 55°F 1915 | 22% |
| Sep 2 | 96°F | 73°F | 102°F 2000 | 55°F 1915 | 22% |
| Sep 3 | 96°F | 73°F | 103°F 2000 | 56°F 1955 | 22% |
| Sep 4 | 96°F | 73°F | 104°F 2000 | 54°F 1974 | 23% |
| Sep 5 | 96°F | 72°F | 108°F 2000 | 49°F 1974 | 23% |
| Sep 6 | 95°F | 72°F | 109°F 2000 | 47°F 1974 | 23% |
| Sep 7 | 95°F | 72°F | 102°F 2023 | 47°F 1974 | 23% |
| Sep 8 | 95°F | 72°F | 103°F 2023 | 47°F 1918 | 23% |
| Sep 9 | 95°F | 72°F | 106°F 2023 | 49°F 1918 | 23% |
| Sep 10 | 94°F | 72°F | 102°F 1912 | 50°F 1918 | 23% |
| Sep 11 | 94°F | 71°F | 101°F 2023 | 51°F 1968 | 23% |
| Sep 12 | 94°F | 71°F | 102°F 2026 | 46°F 1968 | 23% |
| Sep 13 | 93°F | 71°F | 106°F 1912 | 47°F 1940 | 22% |
| Sep 14 | 93°F | 71°F | 101°F 1930 | 46°F 1913 | 22% |
| Sep 15 | 93°F | 71°F | 101°F 1911 | 50°F 1945 | 22% |
| Sep 16 | 93°F | 70°F | 100°F 1911 | 50°F 1945 | 22% |
| Sep 17 | 92°F | 70°F | 100°F 1911 | 48°F 1979 | 22% |
| Sep 18 | 92°F | 70°F | 100°F 1911 | 45°F 1951 | 21% |
| Sep 19 | 92°F | 70°F | 100°F 1911 | 43°F 1981 | 21% |
| Sep 20 | 91°F | 69°F | 99°F 1911 | 39°F 1913 | 21% |
| Sep 21 | 91°F | 69°F | 102°F 1926 | 42°F 1912 | 20% |
| Sep 22 | 91°F | 69°F | 100°F 1909 | 37°F 1983 | 20% |
| Sep 23 | 91°F | 69°F | 98°F 1908 | 37°F 1983 | 20% |
| Sep 24 | 90°F | 68°F | 100°F 2023 | 41°F 1999 | 19% |
| Sep 25 | 90°F | 68°F | 104°F 2023 | 42°F 1989 | 19% |
| Sep 26 | 90°F | 68°F | 104°F 2005 | 40°F 1975 | 18% |
| Sep 27 | 90°F | 68°F | 104°F 2005 | 37°F 1909 | 18% |
| Sep 28 | 89°F | 67°F | 102°F 2005 | 39°F 1942 | 18% |
| Sep 29 | 89°F | 67°F | 102°F 2005 | 38°F 1908 | 17% |
| Sep 30 | 89°F | 67°F | 96°F 1926 | 35°F 1908 | 17% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (CDT).
- September 1
- sunrise 7:12 AM, sunset 7:57 PM
- September 30
- sunrise 7:28 AM, sunset 7:21 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00418169 (San Antonio/seaworld), public domain. Records: NOAA GHCN-Daily, station USC00410902, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.