Yemassee Weather in September
Average highs run from 87°F on September 1 to 81°F on September 30, and lows from 68°F to 60°F. Normal precipitation for the month is 6.04 in over about 10 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
- 84°F
- Average low
- 64°F
- Precipitation
- 6.04 in
- Record high
- 107°FSep 4, 1925
- Record low
- 38°FSep 30, 1967
- Chance of a freeze
- 0%
- Days of 90°F or more
- 10.6
- Daylight
- 12 h 50 min to 11 h 52 min
- Cloud cover
- 55%
- Humidity
- 77%
- Dew point
- 67°F
- Wind
- 4.5 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 | 87°F | 68°F | 100°F 1991 | 51°F 1999 | 36% |
| Sep 2 | 86°F | 68°F | 106°F 1912 | 54°F 1999 | 36% |
| Sep 3 | 86°F | 68°F | 100°F 1912 | 52°F 2005 | 36% |
| Sep 4 | 86°F | 67°F | 107°F 1925 | 57°F 1995 | 36% |
| Sep 5 | 86°F | 67°F | 101°F 1925 | 50°F 2005 | 35% |
| Sep 6 | 86°F | 67°F | 98°F 1921 | 42°F 1997 | 35% |
| Sep 7 | 86°F | 67°F | 99°F 1925 | 46°F 1997 | 35% |
| Sep 8 | 85°F | 67°F | 99°F 1925 | 48°F 1932 | 35% |
| Sep 9 | 85°F | 66°F | 104°F 1925 | 48°F 1932 | 34% |
| Sep 10 | 85°F | 66°F | 100°F 1925 | 45°F 1998 | 34% |
| Sep 11 | 85°F | 66°F | 100°F 1925 | 42°F 1914 | 34% |
| Sep 12 | 85°F | 66°F | 100°F 1925 | 45°F 1914 | 34% |
| Sep 13 | 84°F | 65°F | 95°F 1920 | 48°F 1976 | 33% |
| Sep 14 | 84°F | 65°F | 96°F 1900 | 45°F 1985 | 33% |
| Sep 15 | 84°F | 65°F | 98°F 1925 | 49°F 1996 | 33% |
| Sep 16 | 84°F | 65°F | 99°F 2005 | 46°F 2001 | 33% |
| Sep 17 | 84°F | 64°F | 100°F 1925 | 49°F 1999 | 32% |
| Sep 18 | 83°F | 64°F | 102°F 1931 | 46°F 2001 | 32% |
| Sep 19 | 83°F | 64°F | 102°F 1925 | 48°F 1981 | 32% |
| Sep 20 | 83°F | 63°F | 102°F 1925 | 46°F 1981 | 32% |
| Sep 21 | 83°F | 63°F | 104°F 1925 | 50°F 1916 | 32% |
| Sep 22 | 83°F | 63°F | 102°F 1925 | 47°F 1918 | 31% |
| Sep 23 | 82°F | 62°F | 96°F 1990 | 39°F 1999 | 31% |
| Sep 24 | 82°F | 62°F | 98°F 1925 | 42°F 1967 | 31% |
| Sep 25 | 82°F | 62°F | 96°F 1931 | 41°F 1990 | 31% |
| Sep 26 | 82°F | 61°F | 95°F 1931 | 46°F 1990 | 30% |
| Sep 27 | 81°F | 61°F | 96°F 2000 | 46°F 2000 | 30% |
| Sep 28 | 81°F | 61°F | 98°F 2015 | 42°F 1985 | 30% |
| Sep 29 | 81°F | 60°F | 96°F 1900 | 40°F 2003 | 30% |
| Sep 30 | 81°F | 60°F | 93°F 1933 | 38°F 1967 | 29% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (EDT).
- September 1
- sunrise 6:58 AM, sunset 7:48 PM
- September 30
- sunrise 7:17 AM, sunset 7:09 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00389469 (Yemassee 1 N), public domain. Records: NOAA GHCN-Daily, station USC00389469, 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 2026-09-25. Sun and moon: computed with the NOAA solar equations and Meeus.