Kingshuk Mondal / CC BY 4.0
Thornton, CO Weather on July 11
July 11th in Thornton, CO typically brings hot summer weather, with average highs around 91°F and lows near 57°F — a 34°F daily swing. Over 55 years of records, the warmest July 11th was in 2018 (83°F average), while the coldest was 1986 (54°F) — a 29°F range across recorded history. Rain or other precipitation has occurred on about 24% of July 11th dates historically, with the wettest July 11th recording 1.91" of rain. The last decade has been 1.9°F warmer on this date compared to 20-30 years ago.
What to Expect on July 11
Planning for July 11th in Thornton, CO? Stay hydrated and seek shade during peak afternoon hours.
July 11 Weather Records for Thornton
- •The all-time record high for July 11th in Thornton, CO is 104°F, set in 2022.
- •The coldest July 11th on record dropped to 19°F in 1986.
- •Temperatures have reached 90°F or higher on July 11th in 33 of the last 55 years.
- •A freeze (32°F or below) has occurred on July 11th in 1 of the last 55 years.
- •Last year (1971), July 11th was 8°F warmer than the long-term average.
Frequently Asked Questions
What was the warmest July 11 ever in Thornton?
The warmest July 11 in Thornton, CO reached 104°F in 2022. That is 13°F above the long-term average high of 91°F.
What was the coldest July 11 ever in Thornton?
The coldest July 11 in Thornton, CO dropped to 19°F in 1986. That is 38°F below the long-term average low of 57°F.
What is the average temperature on July 11 in Thornton?
On July 11, Thornton averages a high of 91°F and a low of 57°F based on 55 years of NOAA weather observations from NORTHGLENN.
How many years of weather data are available for July 11 in Thornton?
We have 55 years of weather records for July 11 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.
July 11 Weather History in Thornton
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 96°F | 56°F | 0" | -- |
| 2024 | 96°F | 56°F | 0" | -- |
| 2023 | 99°F | 58°F | 0" | -- |
| 2022 | 104°F | 60°F | 0.03" | -- |
| 2021 | 87°F | 58°F | 0" | -- |
| 2020 | 100°F | 62°F | 0" | -- |
| 2019 | 89°F | 58°F | 0" | -- |
| 2018 | 102°F | 64°F | 0" | -- |
| 2017 | 98°F | 58°F | 0" | -- |
| 2016 | 100°F | 55°F | 0" | -- |
| 2015 | 84°F | 54°F | 0.2" | -- |
| 2014 | 94°F | 59°F | 0" | -- |
| 2013 | 92°F | 60°F | 0" | -- |
| 2012 | 88°F | 57°F | 0" | -- |
| 2011 | 85°F | 62°F | 0.2" | -- |
| 2010 | 91°F | 54°F | 0" | -- |
| 2009 | 91°F | 58°F | 0" | -- |
| 2008 | 101°F | 64°F | 0" | -- |
| 2007 | 81°F | 56°F | 0.25" | -- |
| 2006 | 86°F | 56°F | 0.1" | -- |
| 2005 | 100°F | 58°F | 0" | -- |
| 2004 | 92°F | 56°F | 0" | -- |
| 2003 | 99°F | 55°F | 0" | -- |
| 2002 | 88°F | 59°F | 0" | -- |
| 2001 | 90°F | 58°F | 1.91" | -- |
| 2000 | 95°F | 59°F | 0" | -- |
| 1999 | 89°F | 64°F | 0" | -- |
| 1998 | 96°F | 56°F | 0" | -- |
| 1997 | 95°F | 60°F | 0" | -- |
| 1996 | 88°F | 59°F | 0" | -- |
| 1995 | 95°F | 55°F | 0" | -- |
| 1994 | 84°F | 59°F | 0" | -- |
| 1993 | 76°F | 56°F | 0.3" | -- |
| 1992 | 86°F | 58°F | 0.05" | -- |
| 1991 | 85°F | 60°F | 0" | -- |
| 1990 | 81°F | 56°F | 0.3" | -- |
| 1989 | 92°F | 59°F | 0.28" | -- |
| 1988 | 87°F | 53°F | 0" | -- |
| 1987 | 77°F | 58°F | 0" | -- |
| 1986 | 89°F | 19°F | 0" | -- |
| 1985 | 95°F | 60°F | 0" | -- |
| 1984 | 88°F | 55°F | 0" | -- |
| 1983 | 72°F | 53°F | 0.84" | -- |
| 1982 | 80°F | 51°F | 0" | -- |
| 1981 | 96°F | 63°F | 0" | -- |
| 1980 | 94°F | 63°F | 0" | -- |
| 1979 | 95°F | 54°F | 0" | -- |
| 1978 | 91°F | 57°F | 0.15" | -- |
| 1977 | 92°F | 49°F | 0" | -- |
| 1976 | 96°F | 56°F | 0" | -- |
| 1975 | 80°F | 54°F | 0" | -- |
| 1974 | 93°F | 54°F | 0.15" | -- |
| 1973 | 95°F | 67°F | 0" | -- |
| 1972 | 93°F | 56°F | 0" | -- |
| 1971 | 99°F | 55°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.