May weather in St. Marks, FL
The average temperature in St. Marks in May is 75.2°F (63.0°F–87.4°F). Average precipitation: 3.36 inches.
May is a spring month in St. Marks, and is warmer than the annual average of 68.5°F. Daily temperatures swing about 24.4°F between overnight low and afternoon high. Expect about 8 days with precipitation. Daylight averages about 13h 31m. For travel, May is a comfortable month to visit.
Avg High
87.4°F
Avg Low
63.0°F
Precipitation
3.36 in
Daylight
13h 31m
May records in St. Marks
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| May 1 | 95.0°F (1990) | 43.0°F (1996) | 1.36 in (1989) |
| May 2 | 96.1°F (1990) | 44.1°F (1988) | 0.86 in (1957) |
| May 3 | 93.9°F (2002) | 42.1°F (1971) | 3.06 in (1994) |
| May 4 | 95.0°F (2002) | 34.0°F (1971) | 2.43 in (2017) |
| May 5 | 95.0°F (1947) | 36.0°F (1971) | 1.73 in (1967) |
| May 6 | 93.9°F (1955) | 43.0°F (1973) | 3.60 in (1956) |
| May 7 | 93.9°F (1955) | 46.9°F (1989) | 4.50 in (1979) |
| May 8 | 95.0°F (1949) | 37.9°F (1992) | 3.94 in (1972) |
| May 9 | 96.1°F (2024) | 44.1°F (1992) | 1.08 in (1961) |
| May 10 | 96.1°F (2023) | 44.1°F (1969) | 1.42 in (1960) |
| May 11 | 97.0°F (2011) | 44.1°F (1989) | 3.46 in (1974) |
| May 12 | 98.1°F (2011) | 43.0°F (1969) | 0.99 in (1995) |
| May 13 | 96.1°F (1967) | 46.9°F (1960) | 3.15 in (1987) |
| May 14 | 99.0°F (1998) | 44.1°F (2013) | 2.00 in (2009) |
| May 15 | 99.0°F (1998) | 50.0°F (1941) | 1.50 in (2018) |
| May 16 | 98.1°F (2025) | 46.9°F (1981) | 2.53 in (1983) |
| May 17 | 96.1°F (2025) | 43.0°F (1973) | 2.43 in (1974) |
| May 18 | 97.0°F (1998) | 43.0°F (2011) | 1.68 in (1963) |
| May 19 | 95.0°F (1965) | 46.0°F (1976) | 3.27 in (1966) |
| May 20 | 98.1°F (1998) | 46.9°F (2002) | 4.16 in (1959) |
| May 21 | 97.0°F (1962) | 48.0°F (2002) | 1.33 in (1947) |
| May 22 | 98.1°F (1996) | 45.0°F (1981) | 2.93 in (1967) |
| May 23 | 99.0°F (1948) | 48.0°F (1993) | 3.02 in (1976) |
| May 24 | 98.1°F (1941) | 52.0°F (2001) | 1.52 in (2017) |
| May 25 | 100.0°F (1953) | 48.0°F (1979) | 2.54 in (1997) |
| May 26 | 100.0°F (2012) | 41.0°F (1979) | 3.00 in (1973) |
| May 27 | 102.0°F (1953) | 44.1°F (1979) | 5.09 in (1991) |
| May 28 | 100.0°F (2000) | 46.9°F (1988) | 1.40 in (1947) |
| May 29 | 99.0°F (2019) | 51.1°F (1988) | 2.27 in (1992) |
| May 30 | 97.0°F (2012) | 48.9°F (1971) | 2.47 in (1977) |
| May 31 | 100.0°F (1945) | 51.1°F (1971) | 1.17 in (1975) |