December weather in Rio, IL
The average temperature in Rio in December is °F (°F–°F). Average precipitation: 2.16 inches. Average snowfall is 7.1 inches.
December is a winter month in Rio, and is cooler than the annual average of 0°F. Expect about 8 days with precipitation. Daylight averages about 9h 3m.
Avg High
°F
Avg Low
°F
Precipitation
2.16 in
Snow
7.1 in
December records in Rio
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | — | — | 0.93 in (2006) |
| December 2 | — | — | 0.30 in (2005) |
| December 3 | — | — | 0.44 in (2011) |
| December 4 | — | — | 0.36 in (2011) |
| December 5 | — | — | 1.36 in (1999) |
| December 6 | — | — | 0.50 in (1999) |
| December 7 | — | — | 1.52 in (1994) |
| December 8 | — | — | 0.21 in (2009) |
| December 9 | — | — | 0.64 in (2008) |
| December 10 | — | — | 3.70 in (2003) |
| December 11 | — | — | 0.43 in (2007) |
| December 12 | — | — | 0.78 in (2000) |
| December 13 | — | — | 0.69 in (2001) |
| December 14 | — | — | 1.19 in (2011) |
| December 15 | — | — | 0.84 in (2008) |
| December 16 | — | — | 0.99 in (1992) |
| December 17 | — | — | 0.32 in (1994) |
| December 18 | — | — | 0.36 in (1993) |
| December 19 | — | — | 0.74 in (2002) |
| December 20 | — | — | 0.12 in (1991) |
| December 21 | — | — | 1.03 in (2006) |
| December 22 | — | — | 0.20 in (2006) |
| December 23 | — | — | 0.33 in (2001) |
| December 24 | — | — | 0.52 in (2009) |
| December 25 | — | — | 0.97 in (2009) |
| December 26 | — | — | 0.38 in (2009) |
| December 27 | — | — | 0.33 in (2008) |
| December 28 | — | — | 1.05 in (2008) |
| December 29 | — | — | 0.30 in (2000) |
| December 30 | — | — | 0.48 in (1992) |
| December 31 | — | — | 0.63 in (1992) |