Weather on December 17
Boise, ID
55 Years of Data
Avg High
38°F
Avg Low
23°F
Warmest
2025
45°F avg
Coldest
1985
7°F avg
About This Date
December 17th in Boise, ID typically brings cold winter weather, with average highs around 38°F and lows near 23°F. Over 55 years of records, the warmest December 17th was in 2025 (45°F average), while the coldest was 1985 (7°F) — a 38°F range across recorded history. Precipitation has occurred on 31% of recorded December 17th dates, with snow falling 11% of the time. Temperatures on this date have remained relatively stable over the past several decades.
Temperatures on this date have remained relatively stable over the past several decades.
Planning for December 17th in Boise, ID? Bundle up with warm layers and protect extremities from the cold. Consider bringing rain gear or an umbrella.
Warming Trend
0.3°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025warmest | 58° | 33° | 45° | 0.56" | — |
| 2024 | 51° | 34° | 42° | 0.43" | — |
| 2023 | 30° | 26° | 28° | — | — |
| 2022 | 24° | 20° | 22° | — | — |
| 2021 | 38° | 26° | 32° | — | — |
| 2020 | 44° | 35° | 40° | 0.2" | — |
| 2019 | 36° | 19° | 28° | — | — |
| 2018 | 50° | 37° | 44° | 0.36" | — |
| 2017 | 38° | 18° | 28° | — | — |
| 2016 | 19° | 1° | 10° | — | — |
| 2015 | 35° | 17° | 26° | 0.05" | 0.3" |
| 2014 | 46° | 27° | 37° | — | — |
| 2013 | 27° | 19° | 23° | — | — |
| 2012 | 49° | 27° | 38° | 0.03" | — |
| 2011 | 42° | 21° | 32° | — | — |
| 2010 | 37° | 23° | 30° | — | — |
| 2009 | 46° | 32° | 39° | — | — |
| 2008 | 24° | 7° | 15° | — | — |
| 2007 | 44° | 35° | 40° | — | — |
| 2006 | 32° | 16° | 24° | — | — |
| 2005 | 25° | 12° | 18° | — | 0.1" |
| 2004 | 36° | 29° | 32° | — | — |
| 2003 | 45° | 31° | 38° | — | — |
| 2002 | 42° | 30° | 36° | 0.03" | — |
| 2001 | 42° | 27° | 34° | 0.05" | — |
| 2000 | 44° | 25° | 34° | 0.03" | — |
| 1999 | 47° | 34° | 40° | 0.03" | — |
| 1998 | 38° | 23° | 30° | — | — |
| 1997 | 46° | 35° | 41° | 0.23" | — |
| 1996 | 29° | 17° | 23° | — | — |
| 1995 | 40° | 23° | 31° | — | — |
| 1994 | 51° | 33° | 42° | — | — |
| 1993 | 37° | 29° | 33° | — | — |
| 1992 | 32° | 17° | 25° | 0.1" | 0.7" |
| 1991 | 36° | 18° | 27° | — | — |
| 1990 | 38° | 19° | 28° | — | — |
| 1989 | 37° | 20° | 28° | — | — |
| 1988 | 37° | 17° | 27° | — | — |
| 1987 | 40° | 20° | 30° | — | — |
| 1986 | 28° | 24° | 26° | — | — |
| 1985coldest | 16° | -2° | 7° | — | — |
| 1984 | 20° | 7° | 13° | — | — |
| 1983 | 32° | 22° | 27° | — | — |
| 1982 | 50° | 33° | 42° | 0.05" | — |
| 1981 | 46° | 29° | 37° | — | — |
| 1980 | 37° | 20° | 28° | — | — |
| 1979 | 50° | 28° | 39° | — | — |
| 1978 | 42° | 28° | 35° | — | 0.3" |
| 1977 | 42° | 34° | 38° | 0.48" | 0.5" |
| 1976 | 39° | 15° | 27° | — | — |
| 1975 | 26° | 11° | 18° | — | — |
| 1974 | 46° | 28° | 37° | 0.23" | 0.3" |
| 1973 | 50° | 38° | 44° | 0.74" | — |
| 1972 | 40° | 25° | 32° | 0.99" | — |
| 1971 | 40° | 19° | 29° | — | — |
55 years of data from BOISE AIR TERMINAL