December weather in Leonardtown, MD
The average temperature in Leonardtown in December is 42.3°F (34.5°F–50.1°F). Average precipitation: inches.
December is a winter month in Leonardtown, and is cooler than the annual average of 58.9°F. Daily temperatures swing about 15.6°F between overnight low and afternoon high. Daylight averages about 9h 21m. For travel, December is cool.
Avg High
50.1°F
Avg Low
34.5°F
Precipitation
in
Daylight
9h 21m
December records in Leonardtown
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 75.0°F (2006) | 15.1°F (1929) | 1.09 in (1967) |
| December 2 | 73.0°F (2014) | 15.1°F (2025) | 0.87 in (1929) |
| December 3 | 75.0°F (2006) | 16.0°F (1976) | 1.48 in (2009) |
| December 4 | 71.1°F (1978) | 16.0°F (1966) | 1.50 in (1900) |
| December 5 | 71.1°F (2012) | 21.0°F (1901) | 1.17 in (1978) |
| December 6 | 71.1°F (1982) | 19.9°F (1901) | 0.96 in (1938) |
| December 7 | 72.0°F (1956) | 19.0°F (1926) | 1.44 in (2016) |
| December 8 | 73.0°F (1978) | 19.9°F (1977) | 1.29 in (1974) |
| December 9 | 70.0°F (1951) | 9.0°F (2025) | 1.88 in (2009) |
| December 10 | 69.1°F (1966) | 15.1°F (1917) | 1.02 in (1969) |
| December 11 | 69.1°F (2012) | 12.9°F (1904) | 1.78 in (1973) |
| December 12 | 71.1°F (2007) | 14.0°F (1904) | 1.38 in (2008) |
| December 13 | 71.1°F (2007) | 12.0°F (1960) | 3.11 in (1983) |
| December 14 | 69.1°F (2015) | 16.0°F (1904) | 1.34 in (1953) |
| December 15 | 66.9°F (1906) | 15.1°F (1914) | 1.45 in (1901) |
| December 16 | 73.9°F (1971) | 14.0°F (1932) | 2.31 in (1974) |
| December 17 | 70.0°F (1971) | 15.1°F (1951) | 1.38 in (2020) |
| December 18 | 71.1°F (1937) | 12.0°F (1919) | 1.08 in (1951) |
| December 19 | 73.0°F (2006) | 14.0°F (1926) | 2.43 in (1977) |
| December 20 | 68.0°F (1931) | 12.0°F (2004) | 1.50 in (1933) |
| December 21 | 64.9°F (1923) | 3.9°F (1942) | 1.20 in (1905) |
| December 22 | 71.1°F (2013) | 14.0°F (1921) | 1.95 in (1931) |
| December 23 | 73.0°F (2013) | 12.9°F (1976) | 0.78 in (1967) |
| December 24 | 73.0°F (2015) | 10.9°F (2022) | 1.50 in (2014) |
| December 25 | 70.0°F (1964) | 14.0°F (1906) | 0.77 in (1909) |
| December 26 | 70.0°F (2015) | 7.0°F (1935) | 1.19 in (1943) |
| December 27 | 66.0°F (1936) | 12.9°F (1903) | 1.08 in (1894) |
| December 28 | 72.0°F (1946) | 12.0°F (1925) | 1.03 in (1922) |
| December 29 | 71.1°F (2008) | 9.0°F (1917) | 1.19 in (1958) |
| December 30 | 64.9°F (1898) | -0.9°F (1917) | 1.09 in (1977) |
| December 31 | 68.0°F (1965) | 1.9°F (1917) | 3.44 in (1969) |