Kingshuk Mondal / CC BY 4.0
Thornton, CO Weather on August 26
August 26th in Thornton, CO typically brings warm summer weather, with average highs around 87°F and lows near 55°F — a 32°F daily swing. Over 55 years of records, the warmest August 26th was in 2011 (82°F average), while the coldest was 1987 (58°F) — a 24°F range across recorded history. Rain or other precipitation has occurred on about 27% of August 26th dates historically, with the wettest August 26th recording 0.55" of rain. The last decade has been 1.1°F cooler on this date compared to 20-30 years ago.
What to Expect on August 26
Planning for August 26th in Thornton, CO? Stay hydrated and seek shade during peak afternoon hours.
August 26 Weather Records for Thornton
- •The all-time record high for August 26th in Thornton, CO is 101°F, set in 2019.
- •The coldest August 26th on record dropped to 46°F in 1975.
- •Temperatures have reached 90°F or higher on August 26th in 27 of the last 55 years.
Frequently Asked Questions
What was the warmest August 26 ever in Thornton?
The warmest August 26 in Thornton, CO reached 101°F in 2019. That is 14°F above the long-term average high of 87°F.
What was the coldest August 26 ever in Thornton?
The coldest August 26 in Thornton, CO dropped to 46°F in 1975. That is 9°F below the long-term average low of 55°F.
What is the average temperature on August 26 in Thornton?
On August 26, Thornton averages a high of 87°F and a low of 55°F based on 55 years of NOAA weather observations from NORTHGLENN.
How many years of weather data are available for August 26 in Thornton?
We have 55 years of weather records for August 26 in Thornton, 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 Thornton
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 77°F | 55°F | 0.02" | -- |
| 2024 | 93°F | 57°F | 0.05" | -- |
| 2023 | 68°F | 55°F | 0.55" | -- |
| 2022 | 91°F | 62°F | 0.01" | -- |
| 2021 | 88°F | 58°F | 0.02" | -- |
| 2020 | 98°F | 63°F | 0" | -- |
| 2019 | 101°F | 57°F | 0" | -- |
| 2018 | 92°F | 57°F | 0" | -- |
| 2017 | 94°F | 57°F | 0" | -- |
| 2016 | 72°F | 52°F | 0.04" | -- |
| 2015 | 97°F | 58°F | 0" | -- |
| 2014 | 78°F | 56°F | 0.07" | -- |
| 2013 | 92°F | 59°F | 0" | -- |
| 2012 | 80°F | 52°F | 0" | -- |
| 2011 | 99°F | 65°F | 0" | -- |
| 2010 | 90°F | 54°F | 0" | -- |
| 2009 | 88°F | 54°F | 0" | -- |
| 2008 | 94°F | 58°F | 0" | -- |
| 2007 | 90°F | 55°F | 0" | -- |
| 2006 | 82°F | 53°F | 0.03" | -- |
| 2005 | 93°F | 53°F | 0" | -- |
| 2004 | 87°F | 51°F | 0" | -- |
| 2003 | 94°F | 58°F | 0" | -- |
| 2002 | 97°F | 55°F | 0" | -- |
| 2001 | 98°F | 55°F | 0" | -- |
| 2000 | 87°F | 58°F | 0" | -- |
| 1999 | 91°F | 57°F | 0" | -- |
| 1998 | 89°F | 57°F | 0" | -- |
| 1997 | 88°F | 63°F | 0.01" | -- |
| 1996 | 84°F | 54°F | 0.35" | -- |
| 1995 | 85°F | 55°F | 0" | -- |
| 1994 | 94°F | 60°F | 0" | -- |
| 1993 | 69°F | 56°F | 0.02" | -- |
| 1992 | 69°F | 48°F | 0" | -- |
| 1991 | 92°F | 54°F | 0" | -- |
| 1990 | 91°F | 57°F | 0" | -- |
| 1989 | 87°F | 52°F | 0" | -- |
| 1988 | 94°F | 53°F | 0" | -- |
| 1987 | 67°F | 50°F | 0.04" | -- |
| 1986 | 77°F | 56°F | 0" | -- |
| 1985 | 96°F | 54°F | 0" | -- |
| 1984 | 87°F | 56°F | 0.02" | -- |
| 1983 | 88°F | 60°F | 0" | -- |
| 1982 | 88°F | 56°F | 0" | -- |
| 1981 | 77°F | 50°F | 0" | -- |
| 1980 | 79°F | 51°F | 0.1" | -- |
| 1979 | 79°F | 47°F | 0.01" | -- |
| 1978 | 89°F | 50°F | 0" | -- |
| 1977 | 91°F | 55°F | 0" | -- |
| 1976 | 94°F | 53°F | 0" | -- |
| 1975 | 88°F | 46°F | 0" | -- |
| 1974 | 91°F | 46°F | 0" | -- |
| 1973 | 93°F | 62°F | 0" | -- |
| 1972 | 77°F | 53°F | 0" | -- |
| 1971 | 90°F | 59°F | 0" | -- |
Based on 55 years of data from NOAA station: NORTHGLENN
Monthly Climate Averages
Historical temperature and precipitation averages for Thornton, CO, based on 55+ years of weather data.
Temperatures in Fahrenheit. Precipitation and snowfall in inches.