December weather in Killeen, TX
The average temperature in Killeen in December is 49.3°F (38.1°F–60.4°F). Average precipitation: 2.40 inches.
December is a winter month in Killeen, and is cooler than the annual average of 66.6°F. Daily temperatures swing about 22.3°F between overnight low and afternoon high. Expect about 7 days with precipitation. Daylight averages about 9h 59m. For travel, December is a comfortable month to visit.
Avg High
60.4°F
Avg Low
38.1°F
Precipitation
2.40 in
Daylight
9h 59m
December records in Killeen
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 82.0°F (2012) | 25.0°F (1979) | 0.09 in (1989) |
| December 2 | 81.0°F (2012) | 21.9°F (1985) | 0.21 in (2011) |
| December 3 | 84.0°F (2013) | 21.9°F (1985) | 1.07 in (2016) |
| December 4 | 84.0°F (2017) | 26.1°F (1985) | 1.15 in (2002) |
| December 5 | 80.1°F (1998) | 26.1°F (1991) | 0.57 in (1984) |
| December 6 | 82.0°F (1995) | 23.0°F (1999) | 0.45 in (2017) |
| December 7 | 81.0°F (2022) | 21.2°F (2013) | 1.76 in (2018) |
| December 8 | 82.9°F (2022) | 24.3°F (2017) | 1.00 in (1988) |
| December 9 | 82.0°F (2012) | 24.1°F (1995) | 1.91 in (2002) |
| December 10 | 84.0°F (2021) | 21.0°F (1995) | 1.95 in (1998) |
| December 11 | 82.0°F (1983) | 19.9°F (1995) | 4.00 in (1985) |
| December 12 | 81.0°F (1996) | 21.0°F (1989) | 0.99 in (1999) |
| December 13 | 77.0°F (1995) | 18.0°F (1989) | 0.40 in (1993) |
| December 14 | 81.0°F (1995) | 18.0°F (1985) | 1.80 in (1992) |
| December 15 | 81.0°F (2021) | 21.0°F (1985) | 1.71 in (1992) |
| December 16 | 82.0°F (1995) | 10.0°F (1989) | 0.72 in (1984) |
| December 17 | 81.0°F (2016) | 10.0°F (1989) | 0.22 in (1983) |
| December 18 | 84.0°F (2012) | 20.1°F (2016) | 0.65 in (1986) |
| December 19 | 81.0°F (2012) | 17.1°F (1996) | 0.99 in (1991) |
| December 20 | 73.9°F (1979) | 17.1°F (1989) | 0.94 in (1987) |
| December 21 | 81.0°F (2017) | 17.1°F (1989) | 2.85 in (1991) |
| December 22 | 79.0°F (2018) | 9.0°F (1983) | 1.56 in (1991) |
| December 23 | 79.0°F (1982) | -2.0°F (1989) | 2.35 in (2002) |
| December 24 | 79.0°F (2016) | -2.0°F (1989) | 1.39 in (2023) |
| December 25 | 81.0°F (2021) | 8.1°F (1983) | 0.16 in (1987) |
| December 26 | 84.0°F (2016) | 8.1°F (1983) | 2.20 in (1987) |
| December 27 | 80.1°F (1990) | 10.0°F (1990) | 0.86 in (1982) |
| December 28 | 84.0°F (2016) | 27.0°F (1982) | 1.60 in (1994) |
| December 29 | 79.0°F (2021) | 12.9°F (1983) | 0.45 in (1994) |
| December 30 | 87.1°F (2024) | 9.0°F (1983) | 0.05 in (2018) |
| December 31 | 79.0°F (1981) | 12.9°F (1983) | 0.55 in (1984) |