December weather in Challis, ID
The average temperature in Challis in December is 19.8°F (10.8°F–28.8°F). Average precipitation: 0.52 inches.
December is a winter month in Challis, and is cooler than the annual average of 44.4°F. Daily temperatures swing about 18°F between overnight low and afternoon high. Expect about 7 days with precipitation. Daylight averages about 8h 39m. For travel, December is cold.
Avg High
28.8°F
Avg Low
10.8°F
Precipitation
0.52 in
Daylight
8h 39m
December records in Challis
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 62.1°F (2021) | -5.8°F (2015) | 0.36 in (2005) |
| December 2 | 63.0°F (2021) | -2.7°F (2015) | 0.47 in (2012) |
| December 3 | 51.1°F (2021) | -2.7°F (2022) | 0.20 in (1998) |
| December 4 | 57.9°F (2021) | -6.0°F (2005) | 0.10 in (2022) |
| December 5 | 52.0°F (2023) | -11.7°F (2013) | 0.05 in (2022) |
| December 6 | 52.0°F (2023) | -11.0°F (2005) | 0.15 in (2003) |
| December 7 | 48.0°F (2021) | -20.0°F (2005) | 0.10 in (2019) |
| December 8 | 50.0°F (2015) | -22.0°F (2005) | 0.07 in (2016) |
| December 9 | 55.0°F (2025) | -14.8°F (2013) | 0.14 in (2016) |
| December 10 | 57.0°F (2025) | -13.9°F (2009) | 0.29 in (2015) |
| December 11 | 60.1°F (2025) | -10.8°F (2009) | 0.17 in (2010) |
| December 12 | 59.0°F (2025) | -9.0°F (2005) | 0.09 in (2018) |
| December 13 | 51.1°F (2025) | -7.1°F (2005) | 0.21 in (2015) |
| December 14 | 50.0°F (2002) | -2.9°F (2005) | 0.26 in (2016) |
| December 15 | 50.0°F (2002) | -9.9°F (2005) | 0.26 in (2016) |
| December 16 | 55.0°F (2025) | -14.1°F (2005) | 0.08 in (2014) |
| December 17 | 53.1°F (2025) | -20.7°F (2016) | 0.26 in (2012) |
| December 18 | 50.0°F (2024) | -22.9°F (2016) | 0.17 in (1999) |
| December 19 | 46.9°F (2017) | -14.8°F (2016) | 0.36 in (2010) |
| December 20 | 46.9°F (2021) | -17.0°F (1998) | 0.08 in (2013) |
| December 21 | 46.0°F (2021) | -20.9°F (1998) | 0.38 in (2025) |
| December 22 | 45.0°F (2025) | -20.7°F (2016) | 0.14 in (2008) |
| December 23 | 46.0°F (2005) | -15.9°F (2016) | 0.16 in (2006) |
| December 24 | 48.0°F (2025) | -13.0°F (2001) | 0.29 in (2019) |
| December 25 | 46.0°F (2025) | -13.0°F (2001) | 0.29 in (2008) |
| December 26 | 44.1°F (2025) | -14.1°F (2001) | 0.22 in (2020) |
| December 27 | 46.9°F (2022) | -8.9°F (2015) | 0.30 in (2022) |
| December 28 | 46.9°F (2002) | -9.8°F (2020) | 0.20 in (2005) |
| December 29 | 53.1°F (2017) | -11.7°F (2020) | 0.16 in (2024) |
| December 30 | 50.0°F (2017) | -12.8°F (2014) | 0.17 in (2011) |
| December 31 | 42.1°F (2008) | -12.8°F (2014) | 0.07 in (2022) |