December weather in Rio Vista, TX
The average temperature in Rio Vista in December is 47.0°F (35.5°F–58.4°F). Average precipitation: 2.53 inches. Average snowfall is 0.2 inches.
December is a winter month in Rio Vista, and is cooler than the annual average of 65°F. Daily temperatures swing about 22.9°F between overnight low and afternoon high. Expect about 6 days with precipitation. Daylight averages about 9h 54m. For travel, December is cool.
Avg High
58.4°F
Avg Low
35.5°F
Precipitation
2.53 in
Snow
0.2 in
December records in Rio Vista
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 82.0°F (1922) | 21.0°F (1979) | 1.40 in (1921) |
| December 2 | 82.9°F (1995) | 19.0°F (1985) | 4.02 in (1913) |
| December 3 | 82.9°F (1925) | 15.1°F (1929) | 1.41 in (2002) |
| December 4 | 90.0°F (2005) | 21.0°F (2006) | 2.30 in (2011) |
| December 5 | 82.9°F (1951) | 21.0°F (2006) | 1.03 in (2011) |
| December 6 | 84.0°F (1966) | 10.9°F (1950) | 1.40 in (1935) |
| December 7 | 84.9°F (1924) | 9.0°F (1950) | 1.93 in (1926) |
| December 8 | 82.0°F (1923) | 14.0°F (1917) | 1.81 in (1980) |
| December 9 | 80.1°F (1984) | 12.9°F (2005) | 1.40 in (1971) |
| December 10 | 84.0°F (1938) | 14.0°F (1917) | 1.58 in (1943) |
| December 11 | 82.0°F (1996) | 18.0°F (2013) | 2.90 in (1946) |
| December 12 | 84.9°F (1920) | 16.0°F (1989) | 1.90 in (1923) |
| December 13 | 82.9°F (1948) | 14.0°F (1919) | 0.90 in (1984) |
| December 14 | 81.0°F (1995) | 12.9°F (1919) | 2.61 in (1992) |
| December 15 | 82.0°F (1908) | 10.9°F (1914) | 1.60 in (1959) |
| December 16 | 82.9°F (1908) | 10.0°F (1989) | 1.76 in (1937) |
| December 17 | 82.0°F (2021) | 10.9°F (1932) | 2.50 in (1928) |
| December 18 | 81.0°F (1977) | 15.1°F (2016) | 0.59 in (1986) |
| December 19 | 80.1°F (2012) | 10.0°F (1924) | 1.96 in (1952) |
| December 20 | 81.0°F (1921) | 12.0°F (1924) | 5.02 in (1991) |
| December 21 | 84.0°F (2025) | 15.1°F (1951) | 1.75 in (1907) |
| December 22 | 87.1°F (2010) | 3.9°F (1983) | 1.50 in (1937) |
| December 23 | 84.0°F (1955) | -5.1°F (1989) | 2.88 in (1932) |
| December 24 | 90.0°F (1955) | 7.0°F (1983) | 1.67 in (1975) |
| December 25 | 82.0°F (2021) | 5.0°F (1983) | 1.58 in (2000) |
| December 26 | 82.0°F (2021) | 14.0°F (1983) | 1.85 in (1940) |
| December 27 | 88.0°F (2025) | 19.9°F (1925) | 2.15 in (2018) |
| December 28 | 82.0°F (1921) | 10.0°F (1924) | 0.83 in (1994) |
| December 29 | 82.9°F (2025) | 8.1°F (1983) | 1.08 in (1933) |
| December 30 | 93.0°F (1951) | 3.9°F (1983) | 1.85 in (2006) |
| December 31 | 84.9°F (1951) | 10.9°F (1976) | 0.96 in (1959) |