Weather on October 17
Boise, ID
55 Years of Data
Avg High
66°F
Avg Low
39°F
Warmest
2009
63°F avg
Coldest
1984
40°F avg
About This Date
October 17th in Boise, ID typically brings mild fall weather, with average highs around 66°F and lows near 39°F — a 27°F daily swing. Over 55 years of records, the warmest October 17th was in 2009 (63°F average), while the coldest was 1984 (40°F) — a 23°F range across recorded history. Rain or other precipitation has occurred on about 15% of October 17th dates historically, with the wettest October 17th recording 0.66" of rain. The last decade has been 2.2°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.2°F warmer on this date compared to 20-30 years ago.
Planning for October 17th in Boise, ID? Great weather for outdoor activities.
Warming Trend
0.9°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 65° | 41° | 53° | — | — |
| 2024 | 54° | 40° | 47° | 0.03" | — |
| 2023 | 72° | 50° | 61° | — | — |
| 2022 | 77° | 43° | 60° | — | — |
| 2021 | 75° | 42° | 59° | — | — |
| 2020 | 69° | 44° | 57° | — | — |
| 2019 | 67° | 41° | 54° | — | — |
| 2018 | 65° | 37° | 51° | — | — |
| 2017 | 67° | 38° | 52° | — | — |
| 2016 | 59° | 45° | 52° | 0.28" | — |
| 2015 | 75° | 52° | 63° | 0.48" | — |
| 2014 | 70° | 45° | 57° | — | — |
| 2013 | 62° | 35° | 49° | — | — |
| 2012 | 56° | 34° | 45° | — | — |
| 2011 | 61° | 39° | 50° | — | — |
| 2010 | 69° | 46° | 58° | — | — |
| 2009warmest | 78° | 48° | 63° | — | — |
| 2008 | 76° | 45° | 60° | — | — |
| 2007 | 53° | 37° | 45° | 0.03" | — |
| 2006 | 62° | 36° | 49° | — | — |
| 2005 | 72° | 46° | 59° | — | — |
| 2004 | 63° | 44° | 53° | 0.66" | — |
| 2003 | 77° | 46° | 62° | — | — |
| 2002 | 69° | 40° | 54° | — | — |
| 2001 | 60° | 36° | 48° | — | — |
| 2000 | 78° | 44° | 61° | — | — |
| 1999 | 58° | 31° | 44° | — | — |
| 1998 | 57° | 26° | 42° | — | — |
| 1997 | 73° | 44° | 59° | — | — |
| 1996 | 56° | 28° | 42° | — | — |
| 1995 | 72° | 37° | 54° | 0.03" | — |
| 1994 | 57° | 33° | 45° | — | — |
| 1993 | 62° | 41° | 52° | — | — |
| 1992 | 67° | 35° | 51° | — | — |
| 1991 | 61° | 34° | 47° | — | — |
| 1990 | 61° | 28° | 44° | — | — |
| 1989 | 64° | 33° | 49° | — | — |
| 1988 | 72° | 45° | 58° | — | — |
| 1987 | 65° | 32° | 48° | — | — |
| 1986 | 67° | 37° | 52° | — | — |
| 1985 | 63° | 30° | 46° | — | — |
| 1984coldest | 47° | 34° | 40° | 0.08" | — |
| 1983 | 65° | 36° | 50° | — | — |
| 1982 | 63° | 37° | 50° | — | — |
| 1981 | 68° | 36° | 52° | — | — |
| 1980 | 59° | 32° | 46° | — | — |
| 1979 | 61° | 41° | 51° | — | — |
| 1978 | 72° | 38° | 55° | — | — |
| 1977 | 72° | 40° | 56° | — | — |
| 1976 | 59° | 35° | 47° | — | — |
| 1975 | 77° | 45° | 61° | — | — |
| 1974 | 73° | 39° | 56° | — | — |
| 1973 | 76° | 45° | 60° | — | — |
| 1972 | 65° | 41° | 53° | — | — |
| 1971 | 53° | 39° | 46° | 0.05" | — |
55 years of data from BOISE AIR TERMINAL