December weather in Merriam Woods, MO
The average temperature in Merriam Woods in December is 39.2°F (27.9°F–50.4°F). Average precipitation: 2.82 inches. Average snowfall is 1.7 inches.
December is a winter month in Merriam Woods, and is cooler than the annual average of 58.2°F. Daily temperatures swing about 22.5°F between overnight low and afternoon high. Expect about 7 days with precipitation. Daylight averages about 9h 30m. For travel, December is cool.
Avg High
50.4°F
Avg Low
27.9°F
Precipitation
2.82 in
Snow
1.7 in
December records in Merriam Woods
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 77.0°F (1999) | 8.1°F (1976) | 1.63 in (2006) |
| December 2 | 75.0°F (1950) | 8.1°F (1985) | 5.25 in (1982) |
| December 3 | 77.0°F (2021) | 7.0°F (1985) | 1.57 in (1982) |
| December 4 | 78.1°F (1956) | 12.0°F (2006) | 2.85 in (1973) |
| December 5 | 75.9°F (2001) | 12.0°F (2006) | 1.47 in (1930) |
| December 6 | 78.1°F (1956) | 7.0°F (1950) | 1.98 in (1975) |
| December 7 | 75.9°F (2001) | 1.0°F (1950) | 1.44 in (1956) |
| December 8 | 75.0°F (1951) | 5.0°F (1950) | 0.94 in (2022) |
| December 9 | 78.1°F (1991) | 1.9°F (1995) | 1.93 in (1994) |
| December 10 | 72.0°F (2020) | 5.0°F (1995) | 2.51 in (1971) |
| December 11 | 75.9°F (2020) | 9.0°F (1962) | 1.43 in (1960) |
| December 12 | 79.0°F (1949) | -2.0°F (1962) | 1.08 in (1946) |
| December 13 | 75.9°F (1948) | -2.0°F (1962) | 1.54 in (1927) |
| December 14 | 81.0°F (1948) | 0.0°F (1985) | 1.46 in (2015) |
| December 15 | 71.1°F (1975) | 0.0°F (1985) | 1.51 in (1992) |
| December 16 | 79.0°F (1948) | -5.1°F (1989) | 2.35 in (2001) |
| December 17 | 71.1°F (2006) | -2.0°F (1989) | 2.31 in (1937) |
| December 18 | 73.0°F (1976) | 1.9°F (1964) | 4.29 in (2021) |
| December 19 | 73.0°F (1962) | 1.9°F (1964) | 3.10 in (1924) |
| December 20 | 73.9°F (1978) | 3.0°F (1983) | 1.25 in (1987) |
| December 21 | 75.0°F (1949) | 1.9°F (1989) | 4.05 in (1984) |
| December 22 | 72.0°F (1949) | -11.9°F (1989) | 1.67 in (2013) |
| December 23 | 72.0°F (1982) | -11.9°F (1989) | 1.63 in (1966) |
| December 24 | 77.0°F (2025) | -11.9°F (1989) | 2.85 in (1987) |
| December 25 | 75.9°F (2025) | -7.1°F (1983) | 0.82 in (2023) |
| December 26 | 80.1°F (2025) | -7.1°F (1983) | 0.88 in (1949) |
| December 27 | 81.0°F (2025) | -7.1°F (1983) | 3.25 in (1942) |
| December 28 | 84.9°F (2025) | 0.0°F (1983) | 4.43 in (2015) |
| December 29 | 77.0°F (2025) | -2.9°F (1983) | 1.17 in (1954) |
| December 30 | 73.9°F (2022) | -6.0°F (1983) | 1.12 in (1990) |
| December 31 | 81.0°F (1951) | -6.0°F (1983) | 1.14 in (1978) |