December weather in Knox, IN
The average temperature in Knox in December is 29.8°F (22.4°F–37.1°F). Average precipitation: 2.61 inches. Average snowfall is 5.7 inches.
December is a winter month in Knox, and is cooler than the annual average of 49.5°F. Daily temperatures swing about 14.7°F between overnight low and afternoon high. Expect about 12 days with precipitation. Daylight averages about 9h 2m. For travel, December is cold.
Avg High
37.1°F
Avg Low
22.4°F
Precipitation
2.61 in
Snow
5.7 in
December records in Knox
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 59.0°F (1913) | 10.9°F (1908) | 1.35 in (2006) |
| December 2 | 61.0°F (2012) | 8.1°F (1908) | 0.56 in (2018) |
| December 3 | 60.1°F (2012) | 8.1°F (1905) | 0.48 in (1999) |
| December 4 | 66.0°F (2012) | 1.9°F (1911) | 0.52 in (2012) |
| December 5 | 62.1°F (2017) | 1.9°F (2025) | 1.22 in (1999) |
| December 6 | 57.9°F (1912) | 1.0°F (2007) | 1.18 in (1906) |
| December 7 | 62.1°F (1916) | 1.0°F (2007) | 1.45 in (1994) |
| December 8 | 60.1°F (1916) | -2.0°F (1909) | 0.84 in (1916) |
| December 9 | 57.9°F (2023) | -7.1°F (1917) | 1.18 in (1907) |
| December 10 | 59.0°F (1911) | -9.0°F (1917) | 0.63 in (2008) |
| December 11 | 61.0°F (2021) | -13.0°F (1917) | 0.70 in (2021) |
| December 12 | 57.9°F (2015) | -8.0°F (1917) | 1.20 in (2007) |
| December 13 | 63.0°F (2015) | -5.1°F (2013) | 0.49 in (1909) |
| December 14 | 63.0°F (2015) | -4.0°F (1914) | 0.87 in (2010) |
| December 15 | 64.0°F (2011) | -9.9°F (1916) | 1.69 in (2011) |
| December 16 | 63.0°F (2021) | -8.0°F (2010) | 0.67 in (2007) |
| December 17 | 57.0°F (2021) | -9.9°F (1914) | 1.17 in (2007) |
| December 18 | 51.1°F (2015) | -4.0°F (1897) | 0.49 in (2021) |
| December 19 | 51.1°F (2015) | -16.1°F (2016) | 1.37 in (2008) |
| December 20 | 52.0°F (2011) | -14.1°F (2016) | 0.71 in (2012) |
| December 21 | 52.0°F (2011) | -2.9°F (2008) | 0.85 in (2012) |
| December 22 | 53.1°F (2006) | -7.1°F (1916) | 0.92 in (2006) |
| December 23 | 55.0°F (2006) | -9.9°F (2022) | 1.86 in (1907) |
| December 24 | 63.0°F (2015) | -7.1°F (2022) | 0.66 in (1996) |
| December 25 | 59.0°F (2021) | 0.0°F (1906) | 0.90 in (1997) |
| December 26 | 60.1°F (2019) | -7.1°F (1914) | 0.41 in (1916) |
| December 27 | 62.1°F (2019) | -7.1°F (2017) | 0.83 in (2015) |
| December 28 | 63.0°F (2008) | -8.0°F (2017) | 0.78 in (2008) |
| December 29 | 66.0°F (2025) | -8.0°F (2017) | 1.76 in (2015) |
| December 30 | 61.0°F (2019) | -11.9°F (1909) | 0.86 in (2019) |
| December 31 | 52.0°F (2006) | -6.0°F (1914) | 0.98 in (1992) |