January weather in Morristown, NJ
The average temperature in Morristown in January is 30.7°F (21.9°F–39.5°F). Average precipitation: 3.53 inches. Average snowfall is 5.8 inches.
January is a winter month in Morristown, and is cooler than the annual average of 53.3°F. Daily temperatures swing about 17.6°F between overnight low and afternoon high. Expect about 10 days with precipitation. Daylight averages about 9h 23m. For travel, January is cold.
Avg High
39.5°F
Avg Low
21.9°F
Precipitation
3.53 in
Snow
5.8 in
January records in Morristown
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| January 1 | 63.0°F (1966) | -7.1°F (1964) | 1.23 in (2019) |
| January 2 | 61.0°F (1979) | -7.1°F (1968) | 1.80 in (1948) |
| January 3 | 60.1°F (2000) | -5.1°F (1968) | 2.65 in (1936) |
| January 4 | 66.0°F (2000) | -8.0°F (1981) | 2.02 in (1944) |
| January 5 | 66.9°F (1998) | -7.1°F (1981) | 1.48 in (1982) |
| January 6 | 66.9°F (2007) | 0.0°F (1942) | 1.61 in (1949) |
| January 7 | 72.0°F (2007) | 1.0°F (1940) | 1.62 in (1962) |
| January 8 | 66.0°F (2008) | -2.0°F (1942) | 1.60 in (1979) |
| January 9 | 69.1°F (1998) | -11.9°F (1981) | 1.80 in (1978) |
| January 10 | 68.0°F (1998) | -6.0°F (1958) | 3.24 in (2024) |
| January 11 | 61.0°F (2014) | -14.1°F (1942) | 1.70 in (1983) |
| January 12 | 68.0°F (2020) | -14.1°F (1981) | 1.50 in (1991) |
| January 13 | 69.1°F (1932) | -15.0°F (1981) | 1.56 in (2018) |
| January 14 | 70.0°F (1932) | -15.0°F (1981) | 1.60 in (1978) |
| January 15 | 68.0°F (1995) | -8.0°F (1988) | 2.66 in (1940) |
| January 16 | 66.0°F (1995) | -6.0°F (1964) | 1.64 in (2021) |
| January 17 | 59.0°F (1953) | -15.0°F (1957) | 1.90 in (2022) |
| January 18 | 64.0°F (2006) | -15.0°F (1957) | 1.89 in (2015) |
| January 19 | 66.0°F (1973) | -22.0°F (1948) | 0.93 in (1936) |
| January 20 | 62.1°F (1951) | -11.9°F (1948) | 1.60 in (1978) |
| January 21 | 63.0°F (2006) | -9.9°F (1961) | 2.92 in (1979) |
| January 22 | 64.0°F (1959) | -20.9°F (1961) | 1.78 in (1949) |
| January 23 | 60.1°F (1933) | -11.9°F (1984) | 1.34 in (1952) |
| January 24 | 64.0°F (1999) | -11.9°F (1961) | 1.54 in (1998) |
| January 25 | 68.0°F (1938) | -18.0°F (1935) | 2.37 in (1979) |
| January 26 | 60.1°F (1990) | -16.1°F (1948) | 2.25 in (1986) |
| January 27 | 73.0°F (1950) | -9.9°F (1994) | 1.28 in (2011) |
| January 28 | 64.9°F (1974) | -25.1°F (1935) | 1.55 in (1973) |
| January 29 | 62.1°F (2002) | -14.1°F (1961) | 1.68 in (1943) |
| January 30 | 70.0°F (2002) | -8.0°F (1936) | 1.63 in (1990) |
| January 31 | 64.9°F (2013) | -18.9°F (1948) | 1.25 in (2013) |