December weather in Mackinaw, IL
The average temperature in Mackinaw in December is °F (°F–°F). Average precipitation: 2.29 inches. Average snowfall is 5.6 inches.
December is a winter month in Mackinaw, and is cooler than the annual average of 0°F. Expect about 8 days with precipitation. Daylight averages about 9h 7m.
Avg High
°F
Avg Low
°F
Precipitation
2.29 in
Snow
5.6 in
December records in Mackinaw
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 48.0°F (1943) | 19.9°F (1942) | 1.33 in (1986) |
| December 2 | 46.9°F (1943) | 0.0°F (1942) | 1.79 in (1982) |
| December 3 | 45.0°F (1943) | -4.0°F (1942) | 2.93 in (1982) |
| December 4 | 57.9°F (1943) | 3.9°F (1942) | 1.59 in (1973) |
| December 5 | 60.1°F (1943) | 10.9°F (1942) | 0.50 in (1982) |
| December 6 | 50.0°F (1943) | 10.0°F (1942) | 0.47 in (1975) |
| December 7 | 44.1°F (1943) | 6.1°F (1942) | 1.81 in (1994) |
| December 8 | 46.0°F (1943) | 1.0°F (1942) | 0.85 in (1980) |
| December 9 | 42.1°F (1943) | 14.0°F (1942) | 0.73 in (2009) |
| December 10 | 37.9°F (1942) | 24.1°F (1942) | 1.70 in (1971) |
| December 11 | 36.0°F (1942) | 12.0°F (1943) | 1.20 in (1983) |
| December 12 | 39.9°F (1943) | 3.0°F (1942) | 1.85 in (1972) |
| December 13 | 30.0°F (1944) | -2.9°F (1942) | 0.48 in (2000) |
| December 14 | 34.0°F (1942) | 0.0°F (1944) | 0.95 in (2015) |
| December 15 | 39.9°F (1944) | 5.0°F (1943) | 2.09 in (1992) |
| December 16 | 35.1°F (1944) | -5.1°F (1943) | 0.52 in (1970) |
| December 17 | 43.0°F (1942) | 1.0°F (1943) | 0.56 in (1994) |
| December 18 | 39.0°F (1943) | 6.1°F (1944) | 0.53 in (1949) |
| December 19 | 42.1°F (1943) | 12.0°F (1942) | 1.06 in (1973) |
| December 20 | 41.0°F (1944) | 12.9°F (1942) | 0.80 in (2012) |
| December 21 | 42.1°F (1943) | 7.0°F (1942) | 3.84 in (1949) |
| December 22 | 36.0°F (1942) | 1.0°F (1944) | 0.91 in (1988) |
| December 23 | 41.0°F (1942) | 0.0°F (1943) | 0.63 in (2014) |
| December 24 | 41.0°F (1942) | 1.0°F (1943) | 3.16 in (1965) |
| December 25 | 44.1°F (1943) | 10.0°F (1944) | 2.00 in (2017) |
| December 26 | 55.0°F (1942) | -6.0°F (1944) | 0.71 in (1988) |
| December 27 | 51.1°F (1942) | 5.0°F (1944) | 2.00 in (1942) |
| December 28 | 37.9°F (1942) | 1.9°F (1944) | 1.27 in (1990) |
| December 29 | 39.0°F (1942) | 12.9°F (1943) | 1.41 in (2015) |
| December 30 | 34.0°F (1942) | 14.0°F (1943) | 1.24 in (1971) |
| December 31 | 42.1°F (1942) | 21.9°F (1943) | 1.67 in (2010) |