December weather in Mission, TX
The average temperature in Mission in December is 61.7°F (50.7°F–72.6°F). Average precipitation: 0.57 inches.
December is a winter month in Mission, and is cooler than the annual average of 75.5°F. Daily temperatures swing about 21.9°F between overnight low and afternoon high. Expect about 3 days with precipitation. Daylight averages about 10h 22m. For travel, December is one of the best months of the year to visit.
Avg High
72.6°F
Avg Low
50.7°F
Precipitation
0.57 in
Snow
0.1 in
December records in Mission
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 95.0°F (1950) | 28.0°F (1957) | 0.35 in (1989) |
| December 2 | 91.9°F (1982) | 39.0°F (1972) | 1.84 in (1989) |
| December 3 | 90.0°F (2007) | 34.0°F (1976) | 1.67 in (1979) |
| December 4 | 91.9°F (1978) | 34.0°F (1963) | 0.69 in (1965) |
| December 5 | 93.9°F (1953) | 32.0°F (2009) | 0.54 in (2016) |
| December 6 | 93.9°F (1977) | 28.0°F (1950) | 0.39 in (1971) |
| December 7 | 90.0°F (1978) | 26.1°F (1950) | 0.68 in (2014) |
| December 8 | 90.0°F (1996) | 34.0°F (1976) | 0.81 in (1967) |
| December 9 | 88.0°F (2024) | 34.0°F (2005) | 0.96 in (1982) |
| December 10 | 91.0°F (2008) | 28.0°F (1978) | 0.46 in (1945) |
| December 11 | 90.0°F (1949) | 28.0°F (1978) | 1.16 in (1986) |
| December 12 | 90.0°F (1981) | 26.1°F (1957) | 0.20 in (1947) |
| December 13 | 88.0°F (1981) | 28.0°F (1966) | 0.73 in (1963) |
| December 14 | 89.1°F (1950) | 28.9°F (1966) | 0.90 in (2023) |
| December 15 | 90.0°F (1950) | 30.9°F (1966) | 0.96 in (1963) |
| December 16 | 89.1°F (2015) | 28.0°F (1958) | 0.35 in (1963) |
| December 17 | 89.1°F (1977) | 30.9°F (1989) | 1.04 in (2009) |
| December 18 | 91.0°F (2016) | 30.9°F (1943) | 0.74 in (1956) |
| December 19 | 88.0°F (2025) | 28.0°F (1996) | 0.56 in (1975) |
| December 20 | 89.1°F (2012) | 27.0°F (1996) | 1.00 in (2021) |
| December 21 | 90.0°F (1948) | 26.1°F (1973) | 0.28 in (1991) |
| December 22 | 87.1°F (1990) | 28.0°F (1989) | 0.72 in (1995) |
| December 23 | 87.1°F (1948) | 19.0°F (1989) | 0.82 in (1962) |
| December 24 | 91.9°F (1948) | 18.0°F (1989) | 1.18 in (2006) |
| December 25 | 91.9°F (2015) | 19.0°F (1983) | 0.69 in (1958) |
| December 26 | 91.0°F (1964) | 18.0°F (1983) | 0.40 in (1944) |
| December 27 | 87.1°F (1946) | 28.0°F (1983) | 1.12 in (1978) |
| December 28 | 93.0°F (1968) | 32.0°F (1983) | 0.16 in (1962) |
| December 29 | 89.1°F (2024) | 28.9°F (1942) | 0.36 in (1986) |
| December 30 | 89.1°F (1945) | 21.9°F (1983) | 1.60 in (1986) |
| December 31 | 93.0°F (2024) | 21.9°F (1983) | 2.18 in (1957) |