Michael D Beckwith / CC BY 2.0
Boulder, CO Weather on August 26
August 26th in Boulder, CO typically brings warm summer weather, with average highs around 85°F and lows near 56°F — a 29°F daily swing. Over 55 years of records, the warmest August 26th was in 2011 (78°F average), while the coldest was 1992 (55°F) — a 23°F range across recorded history. Rain or other precipitation has occurred on about 20% of August 26th dates historically. Temperatures on this date have remained relatively stable over the past several decades.
What to Expect on August 26
Planning for August 26th in Boulder, CO? Stay hydrated and seek shade during peak afternoon hours.
August 26 Weather Records for Boulder
- •The all-time record high for August 26th in Boulder, CO is 95°F, set in 2010.
- •The coldest August 26th on record dropped to 44°F in 1992.
- •Temperatures have reached 90°F or higher on August 26th in 22 of the last 55 years.
Frequently Asked Questions
What was the warmest August 26 ever in Boulder?
The warmest August 26 in Boulder, CO reached 95°F in 2010. That is 10°F above the long-term average high of 85°F.
What was the coldest August 26 ever in Boulder?
The coldest August 26 in Boulder, CO dropped to 44°F in 1992. That is 12°F below the long-term average low of 56°F.
What is the average temperature on August 26 in Boulder?
On August 26, Boulder averages a high of 85°F and a low of 56°F based on 55 years of NOAA weather observations from BOULDER MUNI AP.
How many years of weather data are available for August 26 in Boulder?
We have 55 years of weather records for August 26 in Boulder, CO, 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 Boulder
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 73°F | 55°F | -- | -- |
| 2024 | 82°F | 59°F | -- | -- |
| 2023 | 75°F | 59°F | -- | -- |
| 2022 | 81°F | 61°F | 0" | -- |
| 2021 | 84°F | 59°F | 0.06" | -- |
| 2020 | 79°F | 70°F | -- | -- |
| 2019 | 82°F | 61°F | -- | -- |
| 2018 | 93°F | 59°F | -- | -- |
| 2017 | 91°F | 56°F | 0" | -- |
| 2016 | 77°F | 52°F | 0" | -- |
| 2015 | 91°F | 59°F | 0" | -- |
| 2014 | 75°F | 54°F | 0.03" | -- |
| 2013 | 91°F | 61°F | 0" | -- |
| 2012 | 94°F | 51°F | 0" | -- |
| 2011 | 92°F | 64°F | 0" | -- |
| 2010 | 95°F | 53°F | 0" | -- |
| 2009 | 82°F | 51°F | 0" | -- |
| 2008 | 90°F | 59°F | 0" | -- |
| 2007 | 94°F | 58°F | 0" | -- |
| 2006 | 74°F | 52°F | 0.08" | -- |
| 2005 | 90°F | 53°F | 0" | -- |
| 2004 | 81°F | 51°F | 0" | -- |
| 2003 | 88°F | 57°F | 0" | -- |
| 2002 | 92°F | 55°F | 0" | -- |
| 2001 | 92°F | 53°F | 0" | -- |
| 2000 | 87°F | 56°F | 0.08" | -- |
| 1999 | 88°F | 57°F | 0" | -- |
| 1998 | 86°F | 56°F | 0" | -- |
| 1997 | 83°F | 61°F | 0" | -- |
| 1996 | 83°F | 56°F | 0.21" | -- |
| 1995 | 85°F | 57°F | 0" | -- |
| 1994 | 93°F | 58°F | 0" | -- |
| 1993 | 92°F | 56°F | 0" | -- |
| 1992 | 67°F | 44°F | 0" | -- |
| 1991 | 90°F | 59°F | 0" | -- |
| 1990 | 89°F | 59°F | 0" | -- |
| 1989 | 83°F | 46°F | 0.03" | -- |
| 1988 | 93°F | 54°F | 0.01" | -- |
| 1987 | 70°F | 52°F | 0.18" | -- |
| 1986 | 77°F | 57°F | 0" | -- |
| 1985 | 91°F | 55°F | 0" | -- |
| 1984 | 87°F | 54°F | 0" | -- |
| 1983 | 90°F | 57°F | 0" | -- |
| 1982 | 90°F | 60°F | 0.11" | -- |
| 1981 | 78°F | 54°F | 0" | -- |
| 1980 | 76°F | 55°F | 0.37" | -- |
| 1979 | 76°F | 48°F | 0.04" | -- |
| 1978 | 89°F | 55°F | 0" | -- |
| 1977 | 87°F | 58°F | 0" | -- |
| 1976 | 92°F | 59°F | 0" | -- |
| 1975 | 85°F | 52°F | 0" | -- |
| 1974 | 90°F | 57°F | 0" | -- |
| 1973 | 90°F | 60°F | 0" | -- |
| 1972 | 76°F | 49°F | 0" | -- |
| 1971 | 87°F | 60°F | 0" | -- |
Based on 55 years of data from NOAA station: BOULDER MUNI AP
Monthly Climate Averages
Historical temperature and precipitation averages for Boulder, CO, based on 55+ years of weather data.
Temperatures in Fahrenheit. Precipitation and snowfall in inches.