August weather in St. Marks, FL
The average temperature in St. Marks in August is 82.4°F (73.2°F–91.5°F). Average precipitation: 7.60 inches.
August is a summer month in St. Marks, and is warmer than the annual average of 68.5°F. Daily temperatures swing about 18.3°F between overnight low and afternoon high. Expect about 15 days with precipitation. Daylight averages about 13h 6m. For travel, August is a wet month.
Avg High
91.5°F
Avg Low
73.2°F
Precipitation
7.60 in
Daylight
13h 6m
August records in St. Marks
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 102.0°F (1986) | 64.0°F (1993) | 2.94 in (2018) |
| August 2 | 99.0°F (1986) | 66.9°F (1993) | 3.05 in (1974) |
| August 3 | 100.0°F (2011) | 66.9°F (1971) | 2.02 in (1976) |
| August 4 | 100.0°F (2011) | 68.0°F (1971) | 2.33 in (2000) |
| August 5 | 99.0°F (2011) | 68.0°F (1950) | 3.22 in (2001) |
| August 6 | 99.0°F (1989) | 68.0°F (1948) | 5.69 in (2001) |
| August 7 | 99.0°F (2023) | 66.9°F (1969) | 1.75 in (1994) |
| August 8 | 99.0°F (2014) | 66.0°F (1948) | 3.18 in (1962) |
| August 9 | 99.0°F (2007) | 60.1°F (2002) | 3.09 in (2007) |
| August 10 | 99.0°F (2007) | 62.1°F (2008) | 2.68 in (2024) |
| August 11 | 99.0°F (2011) | 68.0°F (1989) | 2.32 in (2000) |
| August 12 | 100.0°F (2011) | 66.0°F (1989) | 2.23 in (1987) |
| August 13 | 100.0°F (1999) | 64.9°F (1979) | 3.75 in (1944) |
| August 14 | 100.0°F (2023) | 64.9°F (1964) | 2.88 in (2006) |
| August 15 | 102.9°F (1995) | 64.0°F (1979) | 4.57 in (1994) |
| August 16 | 98.1°F (1995) | 63.0°F (2011) | 2.32 in (1994) |
| August 17 | 99.0°F (1990) | 63.0°F (1983) | 2.20 in (2013) |
| August 18 | 100.0°F (1993) | 64.9°F (1983) | 1.59 in (1940) |
| August 19 | 100.9°F (1993) | 64.0°F (1979) | 1.60 in (1957) |
| August 20 | 100.0°F (1972) | 66.0°F (1991) | 3.27 in (1953) |
| August 21 | 99.0°F (1968) | 60.1°F (1991) | 1.60 in (1979) |
| August 22 | 100.0°F (1980) | 62.1°F (1997) | 3.03 in (2008) |
| August 23 | 100.9°F (2014) | 57.0°F (1997) | 6.30 in (2008) |
| August 24 | 100.9°F (2014) | 61.0°F (2009) | 2.68 in (2018) |
| August 25 | 102.0°F (2023) | 60.1°F (2009) | 1.43 in (2022) |
| August 26 | 100.0°F (2011) | 60.1°F (1997) | 1.83 in (1993) |
| August 27 | 102.0°F (2011) | 61.0°F (1969) | 2.02 in (1967) |
| August 28 | 100.0°F (2011) | 66.0°F (2011) | 1.82 in (1996) |
| August 29 | 102.0°F (2011) | 61.0°F (1986) | 1.59 in (1972) |
| August 30 | 98.1°F (1962) | 61.0°F (1986) | 3.05 in (1961) |
| August 31 | 97.0°F (1954) | 57.9°F (1992) | 7.07 in (1950) |