December weather in Portsmouth, VA
The average temperature in Portsmouth in December is 45.9°F (37.9°F–53.9°F). Average precipitation: 2.89 inches.
December is a winter month in Portsmouth, and is cooler than the annual average of 61.4°F. Daily temperatures swing about 16°F between overnight low and afternoon high. Expect about 10 days with precipitation. Daylight averages about 9h 29m. For travel, December is cool.
Avg High
53.9°F
Avg Low
37.9°F
Precipitation
2.89 in
Daylight
9h 29m
December records in Portsmouth
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 78.1°F (1991) | 27.0°F (1958) | 0.73 in (1974) |
| December 2 | 73.0°F (2009) | 26.1°F (1976) | 1.12 in (2025) |
| December 3 | 80.1°F (1991) | 21.9°F (1976) | 1.37 in (1948) |
| December 4 | 77.0°F (1978) | 21.9°F (1976) | 1.03 in (1950) |
| December 5 | 79.0°F (1982) | 28.9°F (1963) | 1.75 in (2002) |
| December 6 | 80.1°F (1998) | 26.1°F (1954) | 1.02 in (2016) |
| December 7 | 79.0°F (1998) | 21.9°F (1954) | 0.95 in (1975) |
| December 8 | 78.1°F (1998) | 21.9°F (1976) | 1.87 in (1973) |
| December 9 | 75.9°F (1978) | 21.9°F (1976) | 2.18 in (1957) |
| December 10 | 82.0°F (2020) | 23.0°F (1977) | 2.64 in (1987) |
| December 11 | 75.9°F (2021) | 21.9°F (1957) | 2.07 in (2024) |
| December 12 | 79.0°F (2007) | 17.1°F (1957) | 2.28 in (1983) |
| December 13 | 73.0°F (2015) | 14.0°F (1962) | 1.90 in (1998) |
| December 14 | 77.0°F (2015) | 19.9°F (2025) | 1.40 in (2003) |
| December 15 | 73.9°F (1971) | 19.0°F (2025) | 1.63 in (1972) |
| December 16 | 78.1°F (1971) | 18.0°F (1958) | 1.46 in (1973) |
| December 17 | 73.0°F (2021) | 19.9°F (1988) | 2.54 in (2023) |
| December 18 | 78.1°F (2016) | 21.0°F (1963) | 0.85 in (1959) |
| December 19 | 73.9°F (1984) | 19.9°F (1963) | 1.21 in (1996) |
| December 20 | 69.1°F (1957) | 17.1°F (1963) | 0.66 in (2002) |
| December 21 | 72.0°F (2013) | 18.0°F (1980) | 0.60 in (1977) |
| December 22 | 80.1°F (2013) | 12.0°F (1989) | 1.25 in (1967) |
| December 23 | 77.0°F (1990) | 16.0°F (1989) | 1.01 in (2013) |
| December 24 | 82.0°F (2015) | 12.0°F (1983) | 1.57 in (2014) |
| December 25 | 79.0°F (2015) | 9.0°F (1983) | 0.95 in (1981) |
| December 26 | 72.0°F (1964) | 12.9°F (1983) | 1.78 in (2012) |
| December 27 | 75.0°F (2015) | 21.9°F (1948) | 1.07 in (1964) |
| December 28 | 78.1°F (2008) | 19.9°F (1977) | 1.32 in (1958) |
| December 29 | 79.0°F (2015) | 19.9°F (1977) | 0.88 in (1958) |
| December 30 | 75.9°F (2019) | 21.0°F (1962) | 1.29 in (1948) |
| December 31 | 70.0°F (1990) | 17.1°F (1962) | 1.32 in (2022) |