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Boise, ID Weather on August 26
Boise hit 104°F on Aug 26, 1996 in record-breaking heat
August 26 in Boise typically brings warm late-summer conditions with an average high of 87°F, but the day's temperature extremes tell a dramatic story. In 1996, the city sweltered through a record 104°F, a scorching 17 degrees above normal, while a 1993 cold snap saw temperatures plummet to 39°F—a 65-degree swing between the record extremes over just 55 years of documented history.
What to Expect on August 26
Planning for August 26th in Boise, ID? Stay hydrated and seek shade during peak afternoon hours.
Frequently Asked Questions
What was the warmest August 26 ever in Boise?
The warmest August 26 in Boise, ID reached 104°F in 2010. That is 16°F above the long-term average high of 88°F.
What was the coldest August 26 ever in Boise?
The coldest August 26 in Boise, ID dropped to 39°F in 1993. That is 17°F below the long-term average low of 56°F.
What is the average temperature on August 26 in Boise?
On August 26, Boise averages a high of 88°F and a low of 56°F based on 55 years of NOAA weather observations from BOISE AIR TERMINAL.
How many years of weather data are available for August 26 in Boise?
We have 55 years of weather records for August 26 in Boise, ID, sourced from NOAA's Global Historical Climatology Network. Records include daily high and low temperatures, precipitation, and snowfall data going back to 2025.
August 26 Weather History in Boise
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 88°F | 65°F | 0" | -- |
| 2024 | 84°F | 52°F | 0" | -- |
| 2023 | 97°F | 67°F | 1.46" | -- |
| 2022 | 96°F | 66°F | 0" | -- |
| 2021 | 84°F | 59°F | 0" | -- |
| 2020 | 91°F | 63°F | 0" | -- |
| 2019 | 83°F | 52°F | 0" | -- |
| 2018 | 74°F | 56°F | 0" | -- |
| 2017 | 96°F | 60°F | 0" | -- |
| 2016 | 86°F | 57°F | 0" | -- |
| 2015 | 95°F | 62°F | 0" | -- |
| 2014 | 82°F | 55°F | 0" | -- |
| 2013 | 91°F | 61°F | 0" | -- |
| 2012 | 99°F | 62°F | 0" | -- |
| 2011 | 98°F | 67°F | 0" | -- |
| 2010 | 104°F | 69°F | 0.01" | -- |
| 2009 | 96°F | 63°F | 0" | -- |
| 2008 | 73°F | 51°F | 0" | -- |
| 2007 | 88°F | 57°F | 0" | -- |
| 2006 | 82°F | 53°F | 0" | -- |
| 2005 | 92°F | 58°F | 0" | -- |
| 2004 | 71°F | 51°F | 0.01" | -- |
| 2003 | 86°F | 65°F | 0.02" | -- |
| 2002 | 83°F | 59°F | 0" | -- |
| 2001 | 100°F | 59°F | 0" | -- |
| 2000 | 89°F | 61°F | 0" | -- |
| 1999 | 96°F | 61°F | 0" | -- |
| 1998 | 86°F | 55°F | 0" | -- |
| 1997 | 92°F | 57°F | 0" | -- |
| 1996 | 104°F | 64°F | 0" | -- |
| 1995 | 88°F | 55°F | 0" | -- |
| 1994 | 88°F | 55°F | 0" | -- |
| 1993 | 74°F | 39°F | 0" | -- |
| 1992 | 81°F | 43°F | 0" | -- |
| 1991 | 90°F | 55°F | 0" | -- |
| 1990 | 77°F | 49°F | 0" | -- |
| 1989 | 80°F | 48°F | 0" | -- |
| 1988 | 88°F | 52°F | 0" | -- |
| 1987 | 83°F | 51°F | 0" | -- |
| 1986 | 95°F | 56°F | 0" | -- |
| 1985 | 95°F | 58°F | 0" | -- |
| 1984 | 91°F | 57°F | 0" | -- |
| 1983 | 87°F | 52°F | 0" | -- |
| 1982 | 93°F | 56°F | 0" | -- |
| 1981 | 94°F | 53°F | 0" | -- |
| 1980 | 87°F | 47°F | 0" | -- |
| 1979 | 81°F | 53°F | 0" | -- |
| 1978 | 74°F | 49°F | 0" | -- |
| 1977 | 66°F | 53°F | 0.06" | -- |
| 1976 | 66°F | 45°F | 0" | -- |
| 1975 | 93°F | 53°F | 0" | -- |
| 1974 | 95°F | 59°F | 0" | -- |
| 1973 | 77°F | 45°F | 0" | -- |
| 1972 | 90°F | 58°F | 0" | -- |
| 1971 | 94°F | 58°F | 0" | -- |
Based on 55 years of data from NOAA station: BOISE AIR TERMINAL
How Has August 26 Changed?
Temperatures on this date have remained relatively stable over the past several decades.
Monthly Climate Averages
Historical temperature and precipitation averages for Boise, ID, based on 55+ years of weather data.
Temperatures in Fahrenheit. Precipitation and snowfall in inches.