Weather on July 3
Simi Valley, CA
55 Years of Data
Avg High
87°F
Avg Low
60°F
Warmest
1997
86°F avg
Coldest
2005
63°F avg
About This Date
July 3rd in Simi Valley, CA typically brings warm summer weather, with average highs around 87°F and lows near 60°F — a 27°F daily swing. Over 30 years of records, the warmest July 3rd was in 1997 (86°F average), while the coldest was 2005 (63°F) — a 23°F range across recorded history. This date has historically been dry, with little recorded precipitation. The last decade has been 2.2°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.2°F warmer on this date compared to 20-30 years ago.
Planning for July 3rd in Simi Valley, CA? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
0.8°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 88° | 56° | 72° | — | — |
| 2024 | 100° | 68° | 84° | — | — |
| 2023 | 98° | 65° | 81° | — | — |
| 2022 | 80° | 54° | 67° | — | — |
| 2021 | 96° | 65° | 80° | — | — |
| 2020 | 92° | 59° | 75° | — | — |
| 2019 | 83° | 57° | 70° | — | — |
| 2018 | 84° | 56° | 70° | — | — |
| 2017 | 91° | 59° | 75° | — | — |
| 2016 | 85° | 55° | 70° | — | — |
| 2015 | 92° | 65° | 78° | — | — |
| 2014 | 95° | 59° | 77° | — | — |
| 2013 | 98° | 67° | 82° | — | — |
| 2012 | 73° | 55° | 64° | — | — |
| 2011 | 88° | 61° | 74° | — | — |
| 2010 | 72° | 55° | 63° | — | — |
| 2009 | 77° | 53° | 65° | — | — |
| 2008 | 86° | 61° | 73° | — | — |
| 2007 | 88° | 64° | 76° | — | — |
| 2006 | 90° | 66° | 78° | — | — |
| 2005coldest | 75° | 52° | 63° | — | — |
| 2004 | 72° | 57° | 64° | — | — |
| 2003 | 88° | 61° | 74° | — | — |
| 2002 | 81° | 53° | 67° | — | — |
| 2001 | 100° | 68° | 84° | — | — |
| 2000 | 81° | 54° | 67° | — | — |
| 1999 | 77° | 55° | 66° | — | — |
| 1998 | 81° | 55° | 68° | — | — |
| 1997warmest | 100° | 71° | 86° | — | — |
| 1996 | 101° | 65° | 83° | — | — |
30 years of data from SIMI VALLEY CALIFORNIA