Converse Weather in September
Average highs run from 93°F on September 1 to 86°F on September 30, and lows from 72°F to 65°F. Normal precipitation for the month is 3.90 in over about 8 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
- 90°F
- Average low
- 69°F
- Precipitation
- 3.90 in
- Record high
- 112°FSep 5, 2000
- Record low
- 43°FSep 22, 1983
- Chance of a freeze
- 0%
- Days of 90°F or more
- 17.2
- Daylight
- 12 h 44 min to 11 h 54 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; snow means at least 0.1 inch of snowfall.
| Date | Normal high | Normal low | Record high | Record low | Chance wet | Chance of snow |
|---|---|---|---|---|---|---|
| Sep 1 | 93°F | 72°F | 108°F 1951 | 61°F 1915 | 21% | 0% |
| Sep 2 | 93°F | 72°F | 108°F 1951 | 60°F 1915 | 22% | 0% |
| Sep 3 | 93°F | 72°F | 106°F 1951 | 61°F 1915 | 22% | 0% |
| Sep 4 | 92°F | 72°F | 110°F 2000 | 54°F 1934 | 22% | 0% |
| Sep 5 | 92°F | 71°F | 112°F 2000 | 55°F 1974 | 23% | 0% |
| Sep 6 | 92°F | 71°F | 105°F 1951 | 55°F 1974 | 23% | 0% |
| Sep 7 | 92°F | 71°F | 104°F 1951 | 55°F 2011 | 23% | 0% |
| Sep 8 | 91°F | 71°F | 106°F 1951 | 55°F 1918 | 23% | 0% |
| Sep 9 | 91°F | 71°F | 102°F 1940 | 55°F 1918 | 24% | 0% |
| Sep 10 | 91°F | 70°F | 103°F 1950 | 52°F 2012 | 24% | 0% |
| Sep 11 | 91°F | 70°F | 103°F 1893 | 52°F 2012 | 24% | 0% |
| Sep 12 | 90°F | 70°F | 102°F 1930 | 55°F 2011 | 24% | 0% |
| Sep 13 | 90°F | 70°F | 102°F 1930 | 53°F 1940 | 25% | 0% |
| Sep 14 | 90°F | 69°F | 102°F 1930 | 51°F 1945 | 25% | 0% |
| Sep 15 | 90°F | 69°F | 102°F 1965 | 50°F 1945 | 25% | 0% |
| Sep 16 | 89°F | 69°F | 102°F 1965 | 52°F 1989 | 25% | 0% |
| Sep 17 | 89°F | 69°F | 101°F 1965 | 53°F 1994 | 25% | 0% |
| Sep 18 | 89°F | 68°F | 101°F 1949 | 46°F 1903 | 25% | 0% |
| Sep 19 | 89°F | 68°F | 101°F 1950 | 45°F 1981 | 25% | 0% |
| Sep 20 | 88°F | 68°F | 104°F 1947 | 44°F 1981 | 25% | 0% |
| Sep 21 | 88°F | 68°F | 100°F 1999 | 44°F 1894 | 26% | 0% |
| Sep 22 | 88°F | 67°F | 101°F 1944 | 43°F 1983 | 26% | 0% |
| Sep 23 | 88°F | 67°F | 99°F 1944 | 43°F 1983 | 26% | 0% |
| Sep 24 | 87°F | 67°F | 99°F 1931 | 48°F 1897 | 26% | 0% |
| Sep 25 | 87°F | 66°F | 99°F 1931 | 49°F 1994 | 26% | 0% |
| Sep 26 | 87°F | 66°F | 104°F 2005 | 46°F 2000 | 26% | 0% |
| Sep 27 | 87°F | 66°F | 103°F 1953 | 43°F 1942 | 26% | 0% |
| Sep 28 | 87°F | 65°F | 103°F 2005 | 46°F 1942 | 26% | 0% |
| Sep 29 | 86°F | 65°F | 103°F 2005 | 44°F 1967 | 26% | 0% |
| Sep 30 | 86°F | 65°F | 99°F 1938 | 44°F 1967 | 26% | 0% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (CDT).
- September 1
- sunrise 7:11 AM, sunset 7:55 PM
- September 30
- sunrise 7:26 AM, sunset 7:20 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00417947 (San Antonio Incarnate Word), public domain. Records: NOAA GHCN-Daily, station USC00416276, 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.