December weather in Waterloo, IL
The average temperature in Waterloo in December is °F (°F–°F). Average precipitation: 2.97 inches. Average snowfall is 1.5 inches.
December is a winter month in Waterloo, and is cooler than the annual average of 0°F. Expect about 8 days with precipitation. Daylight averages about 9h 20m.
Avg High
°F
Avg Low
°F
Precipitation
2.97 in
Snow
1.5 in
December records in Waterloo
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 73.9°F (1970) | 9.0°F (1964) | 1.84 in (2006) |
| December 2 | 71.1°F (1970) | 9.0°F (1985) | 1.08 in (1986) |
| December 3 | 75.0°F (1970) | 10.9°F (1985) | 2.30 in (1982) |
| December 4 | 73.0°F (1998) | 9.0°F (1991) | 1.30 in (1982) |
| December 5 | 73.0°F (1998) | 17.1°F (1992) | 1.25 in (1954) |
| December 6 | 71.1°F (1963) | 3.9°F (1977) | 1.33 in (1960) |
| December 7 | 71.1°F (1966) | 3.9°F (1977) | 2.39 in (1956) |
| December 8 | 68.0°F (1966) | 9.0°F (1976) | 1.46 in (1916) |
| December 9 | 68.0°F (1965) | 0.0°F (1995) | 1.08 in (1995) |
| December 10 | 64.9°F (1971) | 1.0°F (1977) | 3.80 in (1971) |
| December 11 | 66.0°F (1990) | 3.0°F (1962) | 1.98 in (1983) |
| December 12 | 66.9°F (1979) | -5.1°F (1962) | 1.01 in (1918) |
| December 13 | 66.9°F (1984) | 1.9°F (2010) | 1.51 in (1927) |
| December 14 | 64.9°F (1975) | -0.9°F (1985) | 1.32 in (1951) |
| December 15 | 64.9°F (1971) | -2.9°F (1989) | 2.78 in (1987) |
| December 16 | 62.1°F (1984) | -13.0°F (1989) | 1.08 in (1937) |
| December 17 | 70.0°F (1984) | -0.9°F (1989) | 2.01 in (1929) |
| December 18 | 66.9°F (1962) | 0.0°F (1964) | 2.48 in (1924) |
| December 19 | 69.1°F (1976) | -7.1°F (1983) | 1.39 in (1995) |
| December 20 | 66.0°F (1976) | -5.1°F (1983) | 1.16 in (1973) |
| December 21 | 68.0°F (1978) | -5.1°F (1973) | 2.15 in (1967) |
| December 22 | 66.9°F (1965) | -18.0°F (1989) | 0.82 in (1994) |
| December 23 | 63.0°F (1965) | -18.0°F (1989) | 1.22 in (2003) |
| December 24 | 69.1°F (1982) | -11.0°F (1983) | 3.43 in (1982) |
| December 25 | 64.0°F (1982) | -14.1°F (1983) | 1.06 in (1982) |
| December 26 | 66.9°F (1971) | 0.0°F (1983) | 1.25 in (1987) |
| December 27 | 70.0°F (1971) | 9.0°F (1977) | 2.36 in (1942) |
| December 28 | 66.0°F (1976) | 3.9°F (1961) | 1.72 in (2008) |
| December 29 | 73.0°F (1984) | -4.0°F (1983) | 1.29 in (1962) |
| December 30 | 69.1°F (1965) | -5.1°F (1983) | 2.00 in (1990) |
| December 31 | 64.9°F (1965) | -9.0°F (1976) | 1.02 in (2010) |