December weather in Lanark, IL
The average temperature in Lanark in December is °F (°F–°F). Average precipitation: 1.67 inches.
December is a winter month in Lanark, and is cooler than the annual average of 0°F. Expect about 9 days with precipitation. Daylight averages about 8h 56m.
Avg High
°F
Avg Low
°F
Precipitation
1.67 in
Daylight
8h 56m
December records in Lanark
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | — | — | 0.88 in (2007) |
| December 2 | — | — | 0.62 in (2018) |
| December 3 | — | — | 0.55 in (1953) |
| December 4 | — | — | 0.70 in (1999) |
| December 5 | — | — | 0.57 in (2016) |
| December 6 | — | — | 0.55 in (1953) |
| December 7 | — | — | 0.15 in (1950) |
| December 8 | — | — | 0.41 in (2008) |
| December 9 | — | — | 2.11 in (2003) |
| December 10 | — | — | 0.70 in (1953) |
| December 11 | — | — | 0.84 in (1949) |
| December 12 | — | — | 0.97 in (2020) |
| December 13 | — | — | 1.57 in (2015) |
| December 14 | — | — | 0.47 in (2008) |
| December 15 | — | — | 0.21 in (2012) |
| December 16 | — | — | 0.38 in (2012) |
| December 17 | — | — | 0.08 in (2002) |
| December 18 | — | — | 0.80 in (2008) |
| December 19 | — | — | 0.10 in (1948) |
| December 20 | — | — | 1.27 in (2006) |
| December 21 | — | — | 0.67 in (2015) |
| December 22 | — | — | 0.35 in (2013) |
| December 23 | — | — | 0.65 in (2009) |
| December 24 | — | — | 1.15 in (2009) |
| December 25 | — | — | 0.36 in (1950) |
| December 26 | — | — | 0.39 in (2016) |
| December 27 | — | — | 0.61 in (2008) |
| December 28 | — | — | 1.17 in (2015) |
| December 29 | — | — | 1.33 in (2019) |
| December 30 | — | — | 0.55 in (2020) |
| December 31 | — | — | 0.42 in (1949) |