Sumter County Weather in September
Average highs run from 90°F on September 1 to 87°F on September 30, and lows from 70°F to 66°F.
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
- 89°F
- Average low
- 68°F
- Record high
- 105°FSep 7, 1955
- Record low
- 50°FSep 27, 1991
- Chance of a freeze
- 0%
- Days of 90°F or more
- 15.7
- Daylight
- 12 h 44 min to 11 h 54 min
- Cloud cover
- 57%
- Humidity
- 84%
- Dew point
- 73°F
- Wind
- 6.9 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 | 90°F | 70°F | 99°F 1907 | 66°F 1997 | |
| Sep 2 | 90°F | 70°F | 96°F 1958 | 66°F 1991 | |
| Sep 3 | 90°F | 70°F | 96°F 1978 | 63°F 1999 | |
| Sep 4 | 90°F | 70°F | 97°F 1999 | 66°F 1909 | |
| Sep 5 | 90°F | 70°F | 102°F 1955 | 61°F 1909 | |
| Sep 6 | 90°F | 70°F | 100°F 1955 | 65°F 1903 | |
| Sep 7 | 90°F | 70°F | 105°F 1955 | 65°F 1901 | |
| Sep 8 | 90°F | 70°F | 97°F 1921 | 63°F 1901 | |
| Sep 9 | 89°F | 69°F | 98°F 1921 | 60°F 1997 | |
| Sep 10 | 89°F | 69°F | 99°F 1977 | 60°F 1997 | |
| Sep 11 | 89°F | 69°F | 101°F 1977 | 59°F 1997 | |
| Sep 12 | 89°F | 69°F | 98°F 2010 | 59°F 1997 | |
| Sep 13 | 89°F | 69°F | 97°F 1962 | 60°F 1997 | |
| Sep 14 | 89°F | 69°F | 97°F 2010 | 63°F 1956 | |
| Sep 15 | 89°F | 69°F | 97°F 1904 | 59°F 1976 | |
| Sep 16 | 89°F | 69°F | 96°F 1972 | 55°F 1956 | |
| Sep 17 | 89°F | 69°F | 96°F 1986 | 56°F 1999 | |
| Sep 18 | 89°F | 68°F | 95°F 1954 | 55°F 1999 | |
| Sep 19 | 89°F | 68°F | 96°F 1972 | 55°F 1910 | |
| Sep 20 | 88°F | 68°F | 95°F 1954 | 51°F 1981 | |
| Sep 21 | 88°F | 68°F | 95°F 2010 | 58°F 2006 | |
| Sep 22 | 88°F | 68°F | 97°F 1925 | 57°F 1913 | |
| Sep 23 | 88°F | 67°F | 95°F 1913 | 53°F 1903 | |
| Sep 24 | 88°F | 67°F | 97°F 2000 | 58°F 1996 | |
| Sep 25 | 88°F | 67°F | 96°F 2010 | 56°F 1990 | |
| Sep 26 | 88°F | 67°F | 95°F 1921 | 57°F 1996 | |
| Sep 27 | 88°F | 67°F | 95°F 1972 | 50°F 1991 | |
| Sep 28 | 87°F | 66°F | 96°F 2010 | 55°F 1991 | |
| Sep 29 | 87°F | 66°F | 95°F 1900 | 56°F 2006 | |
| Sep 30 | 87°F | 66°F | 96°F 1972 | 55°F 2006 |
Chance of rain
Sunrise and sunset
Times for 2026, local time (EDT).
- September 1
- sunrise 7:06 AM, sunset 7:50 PM
- September 30
- sunrise 7:21 AM, sunset 7:15 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00081163 (Bushnell 1 E), public domain. Records: NOAA GHCN-Daily, station USC00084289, 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.