January weather in Wilmington, DE
The average temperature in Wilmington in January is 30.9°F (23.8°F–37.9°F). Average precipitation: 3.67 inches. Average snowfall is 5.3 inches.
January is a winter month in Wilmington, and is cooler than the annual average of 53.4°F. Daily temperatures swing about 14.1°F between overnight low and afternoon high. Expect about 10 days with precipitation. Daylight averages about 9h 29m. For travel, January is cold.
Avg High
37.9°F
Avg Low
23.8°F
Precipitation
3.67 in
Snow
5.3 in
January records in Wilmington
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| January 1 | 64.0°F (2005) | 5.0°F (1940) | 1.78 in (1948) |
| January 2 | 63.0°F (2000) | 5.0°F (1968) | 1.66 in (1996) |
| January 3 | 63.0°F (2000) | 8.1°F (1979) | 2.60 in (1936) |
| January 4 | 66.9°F (1950) | 7.0°F (2014) | 1.77 in (1982) |
| January 5 | 64.9°F (1950) | 9.0°F (1968) | 1.63 in (1993) |
| January 6 | 70.0°F (2007) | 7.0°F (1942) | 1.86 in (1962) |
| January 7 | 64.0°F (1950) | 1.9°F (2014) | 1.55 in (2009) |
| January 8 | 66.0°F (1998) | 1.0°F (1942) | 1.23 in (1976) |
| January 9 | 66.0°F (1937) | -2.0°F (1970) | 2.76 in (2024) |
| January 10 | 64.0°F (2016) | 1.0°F (1982) | 1.14 in (1983) |
| January 11 | 64.0°F (2020) | 1.0°F (1982) | 1.29 in (1991) |
| January 12 | 63.0°F (2017) | -0.9°F (1981) | 0.90 in (2015) |
| January 13 | 70.0°F (1932) | 1.9°F (1981) | 1.21 in (1948) |
| January 14 | 70.0°F (1932) | 8.1°F (1988) | 1.69 in (2005) |
| January 15 | 71.1°F (1932) | 1.9°F (1957) | 1.12 in (1999) |
| January 16 | 69.1°F (1932) | 1.0°F (1972) | 1.32 in (1945) |
| January 17 | 59.0°F (1943) | -9.0°F (1982) | 1.58 in (1978) |
| January 18 | 63.0°F (1986) | 0.0°F (1982) | 1.87 in (2015) |
| January 19 | 64.9°F (1951) | -7.1°F (1994) | 1.40 in (1986) |
| January 20 | 64.0°F (1951) | -2.9°F (1985) | 1.44 in (1995) |
| January 21 | 59.0°F (1959) | -6.0°F (1985) | 1.55 in (1979) |
| January 22 | 63.0°F (1959) | -5.1°F (1985) | 1.10 in (1987) |
| January 23 | 66.0°F (1999) | -4.0°F (1936) | 2.77 in (1998) |
| January 24 | 70.0°F (1967) | 0.0°F (1963) | 1.77 in (1979) |
| January 25 | 66.9°F (1967) | -0.9°F (1935) | 2.55 in (2020) |
| January 26 | 73.9°F (1950) | 5.0°F (1945) | 1.72 in (1933) |
| January 27 | 66.9°F (1974) | 1.9°F (1940) | 1.61 in (1973) |
| January 28 | 63.0°F (1944) | -6.0°F (1935) | 1.40 in (1994) |
| January 29 | 69.1°F (2002) | 0.0°F (1977) | 1.12 in (1973) |
| January 30 | 68.0°F (1947) | 3.0°F (1966) | 1.53 in (1939) |
| January 31 | 64.9°F (1947) | 1.9°F (1948) | 0.98 in (1951) |