December weather in Peru, IL
The average temperature in Peru in December is 27.7°F (19.9°F–35.5°F). Average precipitation: 2.10 inches. Average snowfall is 8.7 inches.
December is a winter month in Peru, and is cooler than the annual average of 49.6°F. Daily temperatures swing about 15.6°F between overnight low and afternoon high. Expect about 10 days with precipitation. Daylight averages about 9h 2m. For travel, December is cold.
Avg High
35.5°F
Avg Low
19.9°F
Precipitation
2.10 in
Snow
8.7 in
December records in Peru
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 61.0°F (1998) | 10.0°F (2024) | 1.70 in (2006) |
| December 2 | 64.0°F (1973) | 1.0°F (1976) | 0.62 in (1986) |
| December 3 | 70.0°F (1970) | -4.0°F (1976) | 2.80 in (1982) |
| December 4 | 70.0°F (2012) | -2.9°F (1991) | 1.13 in (1973) |
| December 5 | 66.9°F (1998) | -4.0°F (2025) | 1.65 in (1999) |
| December 6 | 69.1°F (2001) | -5.1°F (1977) | 0.50 in (1975) |
| December 7 | 57.9°F (1963) | -7.1°F (2005) | 1.49 in (1994) |
| December 8 | 62.1°F (1966) | -7.1°F (2005) | 0.50 in (1980) |
| December 9 | 64.9°F (1991) | -9.0°F (1977) | 0.68 in (2009) |
| December 10 | 55.9°F (1990) | -9.9°F (1977) | 1.69 in (1971) |
| December 11 | 57.9°F (2015) | -17.0°F (1972) | 0.63 in (1983) |
| December 12 | 59.0°F (1990) | -6.0°F (1989) | 1.34 in (1972) |
| December 13 | 64.0°F (1975) | -11.9°F (2000) | 0.90 in (1984) |
| December 14 | 64.0°F (1975) | -8.0°F (1989) | 0.98 in (2011) |
| December 15 | 66.0°F (1975) | -16.1°F (1989) | 1.55 in (1971) |
| December 16 | 66.0°F (2021) | -15.0°F (1989) | 0.82 in (1992) |
| December 17 | 55.0°F (1984) | -9.9°F (1989) | 0.42 in (1967) |
| December 18 | 57.0°F (2020) | -5.1°F (1963) | 0.50 in (1968) |
| December 19 | 57.9°F (2002) | -18.0°F (1983) | 0.93 in (2008) |
| December 20 | 55.9°F (1988) | -18.0°F (1983) | 1.08 in (1987) |
| December 21 | 60.1°F (1967) | -17.0°F (1963) | 1.02 in (2006) |
| December 22 | 60.1°F (1979) | -20.0°F (1989) | 0.36 in (2009) |
| December 23 | 60.1°F (1979) | -20.9°F (1989) | 0.55 in (1988) |
| December 24 | 60.1°F (1982) | -18.9°F (1983) | 2.95 in (1965) |
| December 25 | 60.1°F (1982) | -18.9°F (1983) | 1.90 in (1979) |
| December 26 | 60.1°F (2019) | -15.0°F (2000) | 0.28 in (2010) |
| December 27 | 62.1°F (2019) | -13.0°F (2017) | 1.53 in (1988) |
| December 28 | 66.9°F (1984) | -11.9°F (2017) | 0.90 in (1984) |
| December 29 | 57.0°F (2025) | -11.0°F (1976) | 0.93 in (1978) |
| December 30 | 61.0°F (2022) | -11.0°F (1983) | 1.09 in (1971) |
| December 31 | 62.1°F (2002) | -18.0°F (1976) | 1.55 in (1984) |