December weather in St. Marys, KS
The average temperature in St. Marys in December is °F (°F–°F). Average precipitation: 1.37 inches. Average snowfall is 3.5 inches.
December is a winter month in St. Marys, and is cooler than the annual average of 0°F. Expect about 4 days with precipitation. Daylight averages about 9h 15m.
Avg High
°F
Avg Low
°F
Precipitation
1.37 in
Snow
3.5 in
December records in St. Marys
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | — | — | 3.40 in (2015) |
| December 2 | — | — | 0.20 in (2025) |
| December 3 | — | — | 1.10 in (2011) |
| December 4 | — | — | 1.75 in (1973) |
| December 5 | — | — | 1.55 in (1999) |
| December 6 | — | — | 0.82 in (1969) |
| December 7 | — | — | 0.98 in (1994) |
| December 8 | — | — | 2.17 in (1980) |
| December 9 | — | — | 0.48 in (1961) |
| December 10 | — | — | 0.66 in (1982) |
| December 11 | — | — | 2.90 in (2007) |
| December 12 | — | — | 0.73 in (1972) |
| December 13 | — | — | 0.65 in (1992) |
| December 14 | — | — | 1.25 in (2015) |
| December 15 | — | — | 0.78 in (2014) |
| December 16 | — | — | 0.76 in (1984) |
| December 17 | — | — | 0.34 in (1981) |
| December 18 | — | — | 0.46 in (1967) |
| December 19 | — | — | 1.29 in (1968) |
| December 20 | — | — | 0.93 in (1991) |
| December 21 | — | — | 0.80 in (2006) |
| December 22 | — | — | 0.35 in (1997) |
| December 23 | — | — | 0.42 in (2009) |
| December 24 | — | — | 1.90 in (1965) |
| December 25 | — | — | 0.96 in (2023) |
| December 26 | — | — | 0.40 in (2009) |
| December 27 | — | — | 0.60 in (1959) |
| December 28 | — | — | 1.10 in (1982) |
| December 29 | — | — | 0.65 in (2025) |
| December 30 | — | — | 1.20 in (1972) |
| December 31 | — | — | 0.75 in (1973) |