Kingshuk Mondal / CC BY 4.0
Simi Valley, CA Weather on July 11
July 11th in Simi Valley, CA typically brings warm summer weather, with average highs around 88°F and lows near 62°F — a 26°F daily swing. Over 30 years of records, the warmest July 11th was in 2020 (87°F average), while the coldest was 1997 (65°F) — a 22°F range across recorded history. This date has historically been dry, with little recorded precipitation. The last decade has been 5.2°F warmer on this date compared to 20-30 years ago.
What to Expect on July 11
Planning for July 11th in Simi Valley, CA? Stay hydrated and seek shade during peak afternoon hours.
July 11 Weather Records for Simi Valley
- •The all-time record high for July 11th in Simi Valley, CA is 103°F, set in 1999.
- •The coldest July 11th on record dropped to 53°F in 2001.
- •Temperatures have reached 90°F or higher on July 11th in 13 of the last 30 years.
Frequently Asked Questions
What was the warmest July 11 ever in Simi Valley?
The warmest July 11 in Simi Valley, CA reached 103°F in 1999. That is 15°F above the long-term average high of 88°F.
What was the coldest July 11 ever in Simi Valley?
The coldest July 11 in Simi Valley, CA dropped to 53°F in 2001. That is 9°F below the long-term average low of 62°F.
What is the average temperature on July 11 in Simi Valley?
On July 11, Simi Valley averages a high of 88°F and a low of 62°F based on 30 years of NOAA weather observations from SIMI VALLEY CALIFORNIA.
How many years of weather data are available for July 11 in Simi Valley?
We have 30 years of weather records for July 11 in Simi Valley, CA, 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 Simi Valley
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 90°F | 60°F | -- | -- |
| 2024 | 99°F | 70°F | -- | -- |
| 2023 | 95°F | 64°F | -- | -- |
| 2022 | 92°F | 62°F | -- | -- |
| 2021 | 96°F | 64°F | -- | -- |
| 2020 | 102°F | 71°F | -- | -- |
| 2019 | 98°F | 63°F | -- | -- |
| 2018 | 92°F | 68°F | -- | -- |
| 2017 | 94°F | 65°F | -- | -- |
| 2016 | 85°F | 60°F | -- | -- |
| 2015 | 83°F | 58°F | -- | -- |
| 2014 | 86°F | 58°F | -- | -- |
| 2013 | 75°F | 66°F | -- | -- |
| 2012 | 86°F | 57°F | -- | -- |
| 2011 | 77°F | 57°F | -- | -- |
| 2010 | 77°F | 57°F | -- | -- |
| 2009 | 87°F | 63°F | -- | -- |
| 2008 | 84°F | 64°F | -- | -- |
| 2007 | 75°F | 57°F | -- | -- |
| 2006 | 84°F | 55°F | -- | -- |
| 2005 | 81°F | 57°F | -- | -- |
| 2004 | 86°F | 61°F | -- | -- |
| 2003 | 88°F | 64°F | -- | -- |
| 2002 | 95°F | 69°F | -- | -- |
| 2001 | 83°F | 53°F | -- | -- |
| 2000 | 79°F | 55°F | -- | -- |
| 1999 | 103°F | 67°F | -- | -- |
| 1998 | 95°F | 65°F | -- | -- |
| 1997 | 74°F | 56°F | -- | -- |
| 1996 | 91°F | 63°F | -- | -- |
Based on 30 years of data from NOAA station: SIMI VALLEY CALIFORNIA
Monthly Climate Averages
Historical temperature and precipitation averages for Simi Valley, CA, based on 55+ years of weather data.
Temperatures in Fahrenheit. Precipitation and snowfall in inches.