Weather on August 23
Boise, ID
55 Years of Data
Avg High
86°F
Avg Low
57°F
Warmest
1995
83°F avg
Coldest
1992
55°F avg
About This Date
August 23rd in Boise, ID typically brings warm summer weather, with average highs around 86°F and lows near 57°F — a 29°F daily swing. Over 55 years of records, the warmest August 23rd was in 1995 (83°F average), while the coldest was 1992 (55°F) — a 28°F range across recorded history. Rain or other precipitation has occurred on about 11% of August 23rd dates historically, with the wettest August 23rd recording 0.71" of rain. The last decade has been 1.9°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.9°F warmer on this date compared to 20-30 years ago.
Planning for August 23rd in Boise, ID? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
1.2°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 95° | 67° | 81° | — | — |
| 2024 | 80° | 64° | 72° | — | — |
| 2023 | 86° | 60° | 73° | — | — |
| 2022 | 97° | 67° | 82° | — | — |
| 2021 | 82° | 56° | 69° | — | — |
| 2020 | 93° | 62° | 78° | — | — |
| 2019 | 87° | 55° | 71° | — | — |
| 2018 | 89° | 59° | 74° | — | — |
| 2017 | 91° | 68° | 80° | — | — |
| 2016 | 80° | 50° | 65° | — | — |
| 2015 | 90° | 58° | 74° | — | — |
| 2014 | 79° | 51° | 65° | — | — |
| 2013 | 86° | 62° | 74° | 0.05" | — |
| 2012 | 91° | 60° | 76° | — | — |
| 2011 | 94° | 61° | 77° | — | — |
| 2010 | 77° | 51° | 64° | — | — |
| 2009 | 82° | 68° | 75° | — | — |
| 2008 | 90° | 55° | 72° | — | — |
| 2007 | 83° | 53° | 68° | — | — |
| 2006 | 90° | 58° | 74° | — | — |
| 2005 | 88° | 62° | 75° | — | — |
| 2004 | 71° | 54° | 62° | — | — |
| 2003 | 85° | 58° | 71° | — | — |
| 2002 | 79° | 56° | 67° | — | — |
| 2001 | 85° | 57° | 71° | — | — |
| 2000 | 96° | 62° | 79° | — | — |
| 1999 | 88° | 63° | 75° | 0.05" | — |
| 1998 | 82° | 61° | 71° | — | — |
| 1997 | 96° | 64° | 80° | — | — |
| 1996 | 92° | 58° | 75° | — | — |
| 1995warmest | 96° | 69° | 83° | — | — |
| 1994 | 93° | 53° | 73° | — | — |
| 1993 | 87° | 55° | 71° | — | — |
| 1992coldest | 67° | 43° | 55° | — | — |
| 1991 | 90° | 61° | 75° | — | — |
| 1990 | 81° | 55° | 68° | — | — |
| 1989 | 67° | 52° | 59° | 0.46" | — |
| 1988 | 92° | 52° | 72° | — | — |
| 1987 | 84° | 60° | 72° | — | — |
| 1986 | 89° | 64° | 77° | 0.1" | — |
| 1985 | 88° | 50° | 69° | — | — |
| 1984 | 89° | 64° | 77° | — | — |
| 1983 | 82° | 50° | 66° | — | — |
| 1982 | 90° | 56° | 73° | — | — |
| 1981 | 97° | 56° | 76° | — | — |
| 1980 | 87° | 49° | 68° | — | — |
| 1979 | 86° | 55° | 71° | 0.1" | — |
| 1978 | 82° | 47° | 64° | — | — |
| 1977 | 92° | 53° | 72° | — | — |
| 1976 | 78° | 60° | 69° | — | — |
| 1975 | 75° | 55° | 65° | 0.71" | — |
| 1974 | 90° | 59° | 74° | — | — |
| 1973 | 83° | 57° | 70° | — | — |
| 1972 | 77° | 53° | 65° | — | — |
| 1971 | 74° | 44° | 59° | — | — |
55 years of data from BOISE AIR TERMINAL