Sumter County Weather in August
Average highs run from 90°F on August 1 to 87°F on August 31, and lows from 70°F to 67°F. Normal precipitation for the month is 4.92 in over about 11 wet days.
August day by day
The normal high and low for each date, and the record, in °F.
- Normal low
- Normal high
- Record high
- Record low
August at a glance
- Average high
- 89°F
- Average low
- 68°F
- Precipitation
- 4.92 in
- Record high
- 105°FAug 1, 1980
- Record low
- 50°FAug 18, 1979
- Chance of a freeze
- 0%
- Days of 90°F or more
- 14.3
- Daylight
- 13 h 49 min to 12 h 53 min
- Cloud cover
- 57%
- Humidity
- 71%
- Dew point
- 69°F
- Wind
- 6.5 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 |
|---|---|---|---|---|---|---|
| Aug 1 | 90°F | 70°F | 105°F 1980 | 59°F 1997 | 39% | 0% |
| Aug 2 | 90°F | 69°F | 104°F 1999 | 60°F 1966 | 39% | 0% |
| Aug 3 | 90°F | 69°F | 101°F 1980 | 56°F 1997 | 39% | 0% |
| Aug 4 | 90°F | 69°F | 102°F 1935 | 59°F 1985 | 39% | 0% |
| Aug 5 | 90°F | 69°F | 103°F 1980 | 59°F 1996 | 39% | 0% |
| Aug 6 | 89°F | 69°F | 102°F 1980 | 56°F 1996 | 39% | 0% |
| Aug 7 | 89°F | 69°F | 100°F 1980 | 56°F 1948 | 39% | 0% |
| Aug 8 | 89°F | 69°F | 100°F 1963 | 57°F 2004 | 38% | 0% |
| Aug 9 | 89°F | 69°F | 101°F 2007 | 58°F 2004 | 38% | 0% |
| Aug 10 | 89°F | 69°F | 103°F 2007 | 60°F 1994 | 38% | 0% |
| Aug 11 | 89°F | 69°F | 104°F 2007 | 62°F 2002 | 38% | 0% |
| Aug 12 | 89°F | 69°F | 99°F 1957 | 59°F 1996 | 37% | 0% |
| Aug 13 | 89°F | 69°F | 98°F 2008 | 57°F 1979 | 37% | 0% |
| Aug 14 | 89°F | 69°F | 100°F 1995 | 55°F 1930 | 37% | 0% |
| Aug 15 | 89°F | 69°F | 102°F 1995 | 56°F 1983 | 37% | 0% |
| Aug 16 | 89°F | 69°F | 102°F 1954 | 57°F 1983 | 36% | 0% |
| Aug 17 | 89°F | 69°F | 104°F 1954 | 56°F 1979 | 36% | 0% |
| Aug 18 | 88°F | 68°F | 99°F 1946 | 50°F 1979 | 36% | 0% |
| Aug 19 | 88°F | 68°F | 100°F 1995 | 60°F 1960 | 35% | 0% |
| Aug 20 | 88°F | 68°F | 100°F 1983 | 59°F 1943 | 35% | 0% |
| Aug 21 | 88°F | 68°F | 102°F 1983 | 58°F 1943 | 34% | 0% |
| Aug 22 | 88°F | 68°F | 105°F 1983 | 56°F 1992 | 34% | 0% |
| Aug 23 | 88°F | 68°F | 104°F 1983 | 53°F 1930 | 34% | 0% |
| Aug 24 | 88°F | 68°F | 102°F 1968 | 53°F 1930 | 33% | 0% |
| Aug 25 | 88°F | 68°F | 101°F 2002 | 55°F 1930 | 33% | 0% |
| Aug 26 | 88°F | 68°F | 100°F 1903 | 55°F 1935 | 32% | 0% |
| Aug 27 | 87°F | 67°F | 103°F 1954 | 56°F 1945 | 32% | 0% |
| Aug 28 | 87°F | 67°F | 101°F 1903 | 54°F 1981 | 32% | 0% |
| Aug 29 | 87°F | 67°F | 102°F 1903 | 54°F 1986 | 32% | 0% |
| Aug 30 | 87°F | 67°F | 99°F 1930 | 56°F 1965 | 31% | 0% |
| Aug 31 | 87°F | 67°F | 98°F 1993 | 53°F 1986 | 31% | 0% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (EDT).
- August 1
- sunrise 6:33 AM, sunset 8:22 PM
- August 31
- sunrise 6:55 AM, sunset 7:48 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00388440 (Sumter), public domain. Records: NOAA GHCN-Daily, station USC00388440, 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.