December weather in Llano, TX
The average temperature in Llano in December is 49.5°F (35.4°F–63.6°F). Average precipitation: 1.88 inches.
December is a winter month in Llano, and is cooler than the annual average of 67.1°F. Daily temperatures swing about 28.2°F between overnight low and afternoon high. Expect about 5 days with precipitation. Daylight averages about 10h 1m. For travel, December is cool.
Avg High
63.6°F
Avg Low
35.4°F
Precipitation
1.88 in
Daylight
10h 1m
December records in Llano
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 84.9°F (1950) | -2.9°F (2006) | 1.50 in (1902) |
| December 2 | 84.9°F (1995) | 19.0°F (1979) | 1.68 in (1913) |
| December 3 | 93.0°F (2005) | 16.0°F (1929) | 1.57 in (1945) |
| December 4 | 93.0°F (2005) | 12.0°F (2006) | 1.93 in (1913) |
| December 5 | 91.9°F (1954) | 19.0°F (2009) | 1.42 in (2011) |
| December 6 | 91.0°F (1951) | 14.0°F (1950) | 1.78 in (1935) |
| December 7 | 84.9°F (1951) | 14.0°F (1950) | 2.35 in (1915) |
| December 8 | 82.9°F (1966) | 19.0°F (1927) | 1.27 in (2018) |
| December 9 | 82.0°F (1977) | 12.0°F (2005) | 0.87 in (1988) |
| December 10 | 84.9°F (1933) | 12.9°F (1978) | 1.42 in (1998) |
| December 11 | 87.1°F (1933) | 15.1°F (1978) | 2.80 in (1940) |
| December 12 | 84.0°F (1920) | 16.0°F (1916) | 0.86 in (1923) |
| December 13 | 87.1°F (1933) | 14.0°F (2007) | 1.35 in (1918) |
| December 14 | 84.9°F (1924) | 16.0°F (2007) | 1.30 in (1996) |
| December 15 | 86.0°F (1924) | 16.0°F (1985) | 1.10 in (1906) |
| December 16 | 82.9°F (2010) | 12.9°F (1989) | 1.22 in (1937) |
| December 17 | 84.0°F (1977) | 12.9°F (1989) | 0.72 in (1995) |
| December 18 | 82.9°F (2016) | 16.0°F (1996) | 0.95 in (1898) |
| December 19 | 87.1°F (2012) | 18.0°F (1929) | 4.16 in (1991) |
| December 20 | 88.0°F (2025) | 15.1°F (1909) | 2.95 in (1991) |
| December 21 | 84.9°F (2010) | 12.0°F (1951) | 2.05 in (1991) |
| December 22 | 89.1°F (2010) | -7.1°F (1929) | 0.93 in (1986) |
| December 23 | 82.0°F (1964) | -0.9°F (1989) | 1.44 in (1918) |
| December 24 | 82.9°F (1922) | -0.9°F (1989) | 0.98 in (2023) |
| December 25 | 82.9°F (2021) | 3.0°F (2007) | 0.82 in (1975) |
| December 26 | 86.0°F (2025) | 10.0°F (1983) | 0.70 in (1974) |
| December 27 | 86.0°F (2005) | 18.0°F (1983) | 1.97 in (1994) |
| December 28 | 86.0°F (2005) | 16.0°F (1920) | 0.38 in (1927) |
| December 29 | 86.0°F (1923) | 12.9°F (1983) | 1.05 in (1937) |
| December 30 | 87.1°F (2024) | 5.0°F (1983) | 1.90 in (1952) |
| December 31 | 91.0°F (1951) | 5.0°F (1983) | 1.50 in (1978) |