December weather in Glen St. Mary, FL
The average temperature in Glen St. Mary in December is 56.2°F (42.9°F–69.4°F). Average precipitation: 2.63 inches.
December is a winter month in Glen St. Mary, and is cooler than the annual average of 68.8°F. Daily temperatures swing about 26.5°F between overnight low and afternoon high. Expect about 6 days with precipitation. Daylight averages about 10h 3m. For travel, December is a comfortable month to visit.
Avg High
69.4°F
Avg Low
42.9°F
Precipitation
2.63 in
Daylight
10h 3m
December records in Glen St. Mary
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 84.9°F (1927) | 26.1°F (1929) | 2.65 in (1925) |
| December 2 | 82.9°F (1985) | 23.0°F (1999) | 1.15 in (1981) |
| December 3 | 84.0°F (1973) | 24.1°F (1999) | 4.00 in (1971) |
| December 4 | 82.9°F (1978) | 23.0°F (1989) | 2.96 in (1941) |
| December 5 | 84.0°F (1983) | 24.1°F (1989) | 1.20 in (1964) |
| December 6 | 84.9°F (2016) | 24.1°F (2000) | 3.15 in (2016) |
| December 7 | 84.0°F (2013) | 18.0°F (1937) | 1.67 in (1979) |
| December 8 | 84.0°F (1978) | 19.9°F (1937) | 1.32 in (1973) |
| December 9 | 84.9°F (1978) | 23.0°F (2010) | 1.07 in (1948) |
| December 10 | 84.0°F (2013) | 21.9°F (1968) | 3.20 in (1969) |
| December 11 | 84.0°F (2013) | 23.0°F (1962) | 3.74 in (1967) |
| December 12 | 84.0°F (1927) | 19.9°F (1934) | 1.31 in (1983) |
| December 13 | 82.9°F (1926) | 9.0°F (1962) | 2.48 in (1941) |
| December 14 | 84.0°F (1931) | 17.1°F (1962) | 2.13 in (1945) |
| December 15 | 82.9°F (1925) | 19.9°F (1944) | 2.53 in (1965) |
| December 16 | 86.0°F (1956) | 18.0°F (1968) | 1.44 in (2007) |
| December 17 | 84.0°F (2015) | 19.0°F (1968) | 0.40 in (1973) |
| December 18 | 82.9°F (1922) | 19.9°F (1968) | 4.70 in (2005) |
| December 19 | 84.0°F (1967) | 19.0°F (1981) | 1.49 in (1925) |
| December 20 | 82.9°F (1967) | 17.1°F (1981) | 2.91 in (1940) |
| December 21 | 81.0°F (1931) | 19.0°F (2000) | 1.70 in (1947) |
| December 22 | 84.0°F (2013) | 19.9°F (2000) | 2.02 in (1919) |
| December 23 | 82.9°F (1931) | 21.0°F (1960) | 2.00 in (2014) |
| December 24 | 82.0°F (1981) | 0.0°F (2020) | 2.61 in (1940) |
| December 25 | 82.0°F (1931) | 14.0°F (1983) | 1.85 in (2006) |
| December 26 | 84.9°F (2015) | 14.0°F (1983) | 1.55 in (2002) |
| December 27 | 86.0°F (2015) | 14.0°F (1983) | 4.16 in (1964) |
| December 28 | 86.0°F (2015) | 19.9°F (2010) | 1.47 in (1967) |
| December 29 | 86.0°F (2015) | 21.0°F (2010) | 6.18 in (1983) |
| December 30 | 82.0°F (1984) | 16.0°F (1961) | 0.90 in (1948) |
| December 31 | 86.0°F (2015) | 18.0°F (2000) | 2.03 in (2007) |