December weather in Rockville, IN
The average temperature in Rockville in December is 31.0°F (22.2°F–39.8°F). Average precipitation: 3.25 inches. Average snowfall is 3.6 inches.
December is a winter month in Rockville, and is cooler than the annual average of 52°F. Daily temperatures swing about 17.6°F between overnight low and afternoon high. Expect about 9 days with precipitation. Daylight averages about 9h 12m. For travel, December is cold.
Avg High
39.8°F
Avg Low
22.2°F
Precipitation
3.25 in
Snow
3.6 in
December records in Rockville
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 69.1°F (1970) | 3.9°F (1893) | 1.05 in (1977) |
| December 2 | 73.9°F (1982) | 1.0°F (1942) | 2.40 in (1967) |
| December 3 | 72.0°F (2012) | -4.0°F (1929) | 2.00 in (1982) |
| December 4 | 71.1°F (1998) | -4.0°F (1893) | 1.38 in (1920) |
| December 5 | 68.0°F (2001) | 1.0°F (2025) | 0.95 in (1966) |
| December 6 | 72.0°F (1998) | 1.0°F (1977) | 1.34 in (1956) |
| December 7 | 68.0°F (1916) | -2.9°F (1977) | 1.95 in (1966) |
| December 8 | 66.0°F (1946) | -2.0°F (1909) | 1.70 in (1966) |
| December 9 | 66.9°F (1952) | -8.0°F (1917) | 1.80 in (1952) |
| December 10 | 66.9°F (1971) | -9.9°F (1917) | 0.93 in (1894) |
| December 11 | 66.9°F (1931) | -15.0°F (1917) | 3.03 in (1985) |
| December 12 | 69.1°F (2015) | -9.0°F (1962) | 2.10 in (1972) |
| December 13 | 66.0°F (2015) | -9.0°F (1903) | 2.14 in (1918) |
| December 14 | 69.1°F (1984) | -14.1°F (2025) | 3.00 in (1987) |
| December 15 | 72.0°F (1948) | -14.1°F (2025) | 2.50 in (2011) |
| December 16 | 66.0°F (1948) | -11.0°F (1951) | 0.90 in (2007) |
| December 17 | 64.9°F (1984) | -13.0°F (1914) | 2.00 in (2019) |
| December 18 | 62.1°F (1908) | -6.0°F (1922) | 3.14 in (1924) |
| December 19 | 61.0°F (1895) | -11.9°F (1963) | 2.20 in (1987) |
| December 20 | 64.9°F (1949) | -14.1°F (1981) | 0.85 in (2012) |
| December 21 | 64.0°F (1967) | -13.0°F (1963) | 5.52 in (1967) |
| December 22 | 59.0°F (1931) | -20.9°F (1989) | 0.86 in (2006) |
| December 23 | 64.0°F (1941) | -16.1°F (1989) | 2.08 in (1921) |
| December 24 | 64.0°F (1893) | -18.0°F (1983) | 1.70 in (1982) |
| December 25 | 63.0°F (1982) | -14.1°F (1983) | 1.57 in (1982) |
| December 26 | 64.0°F (2016) | -9.9°F (1914) | 1.33 in (2015) |
| December 27 | 68.0°F (2008) | -9.0°F (1935) | 1.75 in (2015) |
| December 28 | 68.0°F (1984) | -22.0°F (1924) | 2.00 in (2008) |
| December 29 | 64.9°F (1984) | -5.1°F (1983) | 2.15 in (1990) |
| December 30 | 66.0°F (1965) | -14.1°F (1983) | 2.00 in (2019) |
| December 31 | 66.9°F (1951) | -9.9°F (1976) | 1.90 in (1978) |