December weather in Sunbury, PA
The average temperature in Sunbury in December is 32.3°F (24.6°F–40.1°F). Average precipitation: 3.34 inches. Average snowfall is 4.9 inches.
December is a winter month in Sunbury, and is cooler than the annual average of 50.3°F. Daily temperatures swing about 15.5°F between overnight low and afternoon high. Expect about 10 days with precipitation. Daylight averages about 9h 5m. For travel, December is cold.
Avg High
40.1°F
Avg Low
24.6°F
Precipitation
3.34 in
Snow
4.9 in
December records in Sunbury
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 64.0°F (2006) | 12.9°F (1958) | 2.00 in (1934) |
| December 2 | 71.1°F (2006) | 8.1°F (1967) | 1.49 in (2006) |
| December 3 | 63.0°F (1970) | 10.9°F (1966) | 0.90 in (1936) |
| December 4 | 63.0°F (2012) | 8.1°F (1966) | 2.19 in (1950) |
| December 5 | 66.9°F (2012) | 8.1°F (1966) | 1.24 in (1951) |
| December 6 | 63.0°F (1960) | 8.1°F (2007) | 0.94 in (1952) |
| December 7 | 61.0°F (1960) | 8.1°F (2007) | 1.70 in (1962) |
| December 8 | 50.0°F (1957) | 8.1°F (2005) | 1.54 in (2011) |
| December 9 | 55.0°F (1966) | 3.9°F (2025) | 1.05 in (1963) |
| December 10 | 64.0°F (1966) | 3.9°F (2025) | 1.17 in (1938) |
| December 11 | 66.9°F (1966) | -2.0°F (1958) | 1.58 in (2003) |
| December 12 | 57.0°F (2015) | 0.0°F (1962) | 1.47 in (2008) |
| December 13 | 57.0°F (2015) | 1.9°F (1962) | 1.30 in (1949) |
| December 14 | 63.0°F (2015) | -5.1°F (2005) | 1.65 in (1941) |
| December 15 | 66.0°F (2015) | -5.1°F (2005) | 1.69 in (1999) |
| December 16 | 57.9°F (2006) | 3.0°F (1960) | 1.39 in (2022) |
| December 17 | 62.1°F (2021) | 8.1°F (2010) | 2.35 in (2000) |
| December 18 | 54.0°F (1966) | 10.0°F (1960) | 2.37 in (2023) |
| December 19 | 57.9°F (2025) | 3.0°F (2020) | 0.74 in (1944) |
| December 20 | 60.1°F (1957) | 0.0°F (1960) | 1.05 in (1936) |
| December 21 | 64.0°F (1957) | 1.9°F (1960) | 1.67 in (1973) |
| December 22 | 66.0°F (2013) | 0.0°F (1958) | 1.13 in (1972) |
| December 23 | 64.0°F (2013) | -11.9°F (1960) | 1.20 in (2022) |
| December 24 | 63.0°F (2015) | -11.9°F (1960) | 2.09 in (1941) |
| December 25 | 64.9°F (2015) | -5.1°F (1969) | 2.30 in (2020) |
| December 26 | 66.0°F (2015) | -5.1°F (1969) | 1.23 in (1975) |
| December 27 | 57.9°F (1964) | 6.1°F (1962) | 1.21 in (1943) |
| December 28 | 55.0°F (2008) | -9.0°F (1960) | 0.94 in (1964) |
| December 29 | 57.0°F (2008) | -9.0°F (1960) | 0.97 in (1967) |
| December 30 | 63.0°F (2024) | -5.1°F (1961) | 1.98 in (1942) |
| December 31 | 55.9°F (2022) | -5.1°F (1963) | 1.04 in (1948) |