December weather in Upper Marlboro, MD
The average temperature in Upper Marlboro in December is 38.4°F (28.8°F–48.0°F). Average precipitation: 3.55 inches. Average snowfall is 2.2 inches.
December is a winter month in Upper Marlboro, and is cooler than the annual average of 56°F. Daily temperatures swing about 19.2°F between overnight low and afternoon high. Expect about 10 days with precipitation. Daylight averages about 9h 18m. For travel, December is cool.
Avg High
48.0°F
Avg Low
28.8°F
Precipitation
3.55 in
Snow
2.2 in
December records in Upper Marlboro
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 75.0°F (1991) | 9.0°F (1976) | 0.85 in (1972) |
| December 2 | 75.0°F (2006) | 5.0°F (1967) | 1.85 in (1974) |
| December 3 | 72.0°F (1970) | 9.0°F (1976) | 1.45 in (1967) |
| December 4 | 73.0°F (1998) | 10.9°F (1966) | 1.03 in (1983) |
| December 5 | 75.0°F (1982) | 10.9°F (1966) | 1.01 in (1978) |
| December 6 | 79.0°F (2001) | 12.0°F (1957) | 1.13 in (1973) |
| December 7 | 80.1°F (1998) | 5.0°F (2002) | 1.56 in (2011) |
| December 8 | 79.0°F (1998) | 5.0°F (2002) | 2.02 in (2011) |
| December 9 | 73.9°F (1978) | 14.0°F (1960) | 1.62 in (1972) |
| December 10 | 73.0°F (1966) | 12.0°F (1960) | 1.17 in (1991) |
| December 11 | 72.0°F (1966) | 6.1°F (1968) | 1.66 in (1969) |
| December 12 | 69.1°F (1979) | 9.0°F (1968) | 1.34 in (2008) |
| December 13 | 73.9°F (2015) | 5.0°F (1988) | 1.49 in (1983) |
| December 14 | 73.0°F (2015) | 1.0°F (1960) | 1.98 in (1996) |
| December 15 | 71.1°F (2015) | 5.0°F (1960) | 0.86 in (1981) |
| December 16 | 71.1°F (1971) | 1.0°F (1958) | 1.37 in (2005) |
| December 17 | 73.0°F (1971) | 8.1°F (1960) | 1.99 in (2000) |
| December 18 | 70.0°F (1984) | 1.9°F (1960) | 1.15 in (1977) |
| December 19 | 73.0°F (1984) | 3.0°F (1960) | 2.34 in (1977) |
| December 20 | 69.1°F (1990) | 1.0°F (1960) | 0.77 in (2009) |
| December 21 | 64.9°F (1956) | 5.0°F (1960) | 1.25 in (1957) |
| December 22 | 72.0°F (2013) | 1.9°F (1985) | 1.37 in (1972) |
| December 23 | 71.1°F (2013) | 6.1°F (1960) | 0.85 in (1967) |
| December 24 | 72.0°F (1990) | 6.1°F (1960) | 1.01 in (2015) |
| December 25 | 70.0°F (2015) | 1.9°F (1983) | 2.42 in (1986) |
| December 26 | 72.0°F (1964) | 1.9°F (1980) | 1.25 in (2002) |
| December 27 | 71.1°F (1964) | 5.0°F (1966) | 1.43 in (2012) |
| December 28 | 72.0°F (1971) | 7.0°F (1966) | 1.12 in (1990) |
| December 29 | 75.0°F (1984) | 9.0°F (1977) | 1.15 in (1967) |
| December 30 | 77.0°F (1984) | 6.1°F (1976) | 1.15 in (1962) |
| December 31 | 70.0°F (1990) | 3.9°F (1963) | 1.15 in (1969) |