December weather in Hackettstown, NJ
The average temperature in Hackettstown in December is °F (°F–°F). Average precipitation: 4.74 inches. Average snowfall is 4.8 inches.
December is a winter month in Hackettstown, and is cooler than the annual average of 0°F. Expect about 10 days with precipitation. Daylight averages about 9h 5m.
Avg High
°F
Avg Low
°F
Precipitation
4.74 in
Snow
4.8 in
December records in Hackettstown
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 46.9°F (2011) | 23.0°F (2013) | 1.25 in (1977) |
| December 2 | 57.9°F (2014) | 28.9°F (2013) | 3.03 in (1996) |
| December 3 | 48.9°F (2011) | 30.9°F (2011) | 1.56 in (2009) |
| December 4 | 57.0°F (2014) | 30.9°F (2011) | 3.25 in (1990) |
| December 5 | 50.0°F (2011) | 27.0°F (2014) | 2.85 in (1993) |
| December 6 | 53.1°F (2011) | 28.9°F (2012) | 1.52 in (1973) |
| December 7 | 57.9°F (2011) | 26.1°F (2012) | 1.10 in (1972) |
| December 8 | 55.9°F (2011) | 24.1°F (2014) | 1.87 in (2011) |
| December 9 | 48.9°F (2012) | 25.0°F (2014) | 1.03 in (1972) |
| December 10 | 46.0°F (2011) | 28.9°F (2011) | 0.78 in (1978) |
| December 11 | 53.1°F (2012) | 19.9°F (2013) | 1.42 in (1992) |
| December 12 | 46.0°F (2012) | 21.0°F (2013) | 2.88 in (2008) |
| December 13 | 41.0°F (2012) | 14.0°F (2013) | 2.00 in (1983) |
| December 14 | 44.1°F (2011) | 18.0°F (2013) | 1.35 in (1983) |
| December 15 | 50.0°F (2011) | 21.9°F (2013) | 1.58 in (1977) |
| December 16 | 55.9°F (2011) | 23.0°F (2013) | 1.63 in (2005) |
| December 17 | 46.0°F (2011) | 17.1°F (2013) | 1.62 in (2000) |
| December 18 | 48.9°F (2014) | 17.1°F (2013) | 0.95 in (2000) |
| December 19 | 51.1°F (2012) | 18.0°F (2011) | 1.35 in (1986) |
| December 20 | 46.9°F (2011) | 19.9°F (2013) | 1.05 in (2008) |
| December 21 | 53.1°F (2012) | 30.9°F (2012) | 2.26 in (1973) |
| December 22 | 59.0°F (2013) | 32.0°F (2014) | 1.03 in (1972) |
| December 23 | 62.1°F (2013) | 34.0°F (2012) | 1.50 in (1983) |
| December 24 | 55.9°F (2013) | 25.0°F (2012) | 1.11 in (2007) |
| December 25 | 59.0°F (2014) | 19.0°F (2013) | 2.30 in (2003) |
| December 26 | 50.0°F (2014) | 18.0°F (2013) | 1.53 in (1975) |
| December 27 | 46.0°F (2011) | 21.9°F (2013) | 1.52 in (2009) |
| December 28 | 55.0°F (2011) | 21.9°F (2013) | 1.36 in (2011) |
| December 29 | 50.0°F (2014) | 21.9°F (2011) | 1.42 in (1983) |
| December 30 | 41.0°F (2013) | 25.0°F (2011) | 1.28 in (1997) |
| December 31 | 48.9°F (2011) | 16.0°F (2013) | 0.90 in (2000) |