Michael D Beckwith / CC BY 2.0
Boulder, CO Weather on July 11
July 11th in Boulder, CO typically brings warm summer weather, with average highs around 88°F and lows near 57°F — a 31°F daily swing. Over 55 years of records, the warmest July 11th was in 1985 (80°F average), while the coldest was 1983 (62°F) — a 18°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 1.47" of rain. The last decade has been 3.1°F warmer on this date compared to 20-30 years ago.
What to Expect on July 11
Planning for July 11th in Boulder, CO? Stay hydrated and seek shade during peak afternoon hours.
July 11 Weather Records for Boulder
- •The all-time record high for July 11th in Boulder, CO is 98°F, set in 2013.
- •The coldest July 11th on record dropped to 51°F in 1999.
- •Temperatures have reached 90°F or higher on July 11th in 24 of the last 55 years.
- •Last year (1971), July 11th was 9°F warmer than the long-term average.
Frequently Asked Questions
What was the warmest July 11 ever in Boulder?
The warmest July 11 in Boulder, CO reached 98°F in 2013. That is 10°F above the long-term average high of 88°F.
What was the coldest July 11 ever in Boulder?
The coldest July 11 in Boulder, CO dropped to 51°F in 1999. That is 6°F below the long-term average low of 57°F.
What is the average temperature on July 11 in Boulder?
On July 11, Boulder averages a high of 88°F and a low of 57°F based on 55 years of NOAA weather observations from BOULDER MUNI AP.
How many years of weather data are available for July 11 in Boulder?
We have 55 years of weather records for July 11 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.
July 11 Weather History in Boulder
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 88°F | 57°F | -- | -- |
| 2024 | 97°F | 61°F | -- | -- |
| 2023 | 97°F | 61°F | -- | -- |
| 2022 | 79°F | 61°F | -- | -- |
| 2021 | 82°F | 55°F | 0" | -- |
| 2020 | 91°F | 63°F | -- | -- |
| 2019 | 95°F | 59°F | -- | -- |
| 2018 | 95°F | 64°F | -- | -- |
| 2017 | 94°F | 61°F | 0" | -- |
| 2016 | 88°F | 62°F | 0" | -- |
| 2015 | 84°F | 54°F | 0.13" | -- |
| 2014 | 87°F | 62°F | 0.13" | -- |
| 2013 | 98°F | 58°F | 0" | -- |
| 2012 | 84°F | 56°F | 0" | -- |
| 2011 | 81°F | 58°F | 0.51" | -- |
| 2010 | 84°F | 53°F | 0" | -- |
| 2009 | 89°F | 57°F | 0" | -- |
| 2008 | 98°F | 60°F | 0" | -- |
| 2007 | 79°F | 54°F | 0.46" | -- |
| 2006 | 87°F | 58°F | 0.15" | -- |
| 2005 | 91°F | 56°F | 0" | -- |
| 2004 | 94°F | 54°F | 0" | -- |
| 2003 | 89°F | 57°F | 0" | -- |
| 2002 | 86°F | 58°F | 0" | -- |
| 2001 | 88°F | 56°F | 0.3" | -- |
| 2000 | 90°F | 57°F | 0" | -- |
| 1999 | 84°F | 51°F | 0" | -- |
| 1998 | 93°F | 57°F | 0" | -- |
| 1997 | 83°F | 60°F | 0" | -- |
| 1996 | 86°F | 61°F | 0" | -- |
| 1995 | 97°F | 57°F | 0" | -- |
| 1994 | 85°F | 59°F | 0" | -- |
| 1993 | 83°F | 56°F | 1.47" | -- |
| 1992 | 85°F | 56°F | 0" | -- |
| 1991 | 80°F | 59°F | 0.3" | -- |
| 1990 | 77°F | 55°F | 0.89" | -- |
| 1989 | 88°F | 63°F | 0" | -- |
| 1988 | 87°F | 52°F | 0" | -- |
| 1987 | 81°F | 56°F | 0" | -- |
| 1986 | 89°F | 55°F | 0" | -- |
| 1985 | 97°F | 64°F | 0" | -- |
| 1984 | 86°F | 54°F | 0" | -- |
| 1983 | 74°F | 51°F | 0.71" | -- |
| 1982 | 83°F | 54°F | 0" | -- |
| 1981 | 94°F | 53°F | 0" | -- |
| 1980 | 90°F | 60°F | 0.13" | -- |
| 1979 | 96°F | 60°F | 0" | -- |
| 1978 | 91°F | 58°F | 0.28" | -- |
| 1977 | 92°F | 52°F | 0" | -- |
| 1976 | 96°F | 62°F | 0" | -- |
| 1975 | 80°F | 54°F | 0.18" | -- |
| 1974 | 92°F | 57°F | 0" | -- |
| 1973 | 94°F | 56°F | 0" | -- |
| 1972 | 90°F | 57°F | 0" | -- |
| 1971 | 97°F | 59°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.