Weather on June 23
Simi Valley, CA
55 Years of Data
Avg High
82°F
Avg Low
57°F
Warmest
2024
88°F avg
Coldest
2003
60°F avg
About This Date
June 23rd in Simi Valley, CA typically brings warm summer weather, with average highs around 82°F and lows near 57°F — a 25°F daily swing. Over 30 years of records, the warmest June 23rd was in 2024 (88°F average), while the coldest was 2003 (60°F) — a 28°F range across recorded history. This date has historically been dry, with little recorded precipitation. The last decade has been 5.5°F warmer on this date compared to 20-30 years ago.
The last decade has been 5.5°F warmer on this date compared to 20-30 years ago.
Planning for June 23rd in Simi Valley, CA? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
2.7°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 82° | 55° | 69° | — | — |
| 2024warmest | 100° | 76° | 88° | — | — |
| 2023 | 77° | 50° | 64° | — | — |
| 2022 | 100° | 69° | 85° | — | — |
| 2021 | 89° | 59° | 74° | — | — |
| 2020 | 91° | 57° | 74° | — | — |
| 2019 | 87° | 55° | 71° | — | — |
| 2018 | 73° | 55° | 64° | — | — |
| 2017 | 88° | 57° | 72° | — | — |
| 2016 | 87° | 59° | 73° | — | — |
| 2015 | 90° | 65° | 77° | — | — |
| 2014 | 85° | 57° | 71° | — | — |
| 2013 | 79° | 55° | 67° | — | — |
| 2012 | 72° | 52° | 62° | — | — |
| 2011 | 75° | 55° | 65° | — | — |
| 2010 | 75° | 54° | 64° | — | — |
| 2009 | 74° | 52° | 63° | — | — |
| 2008 | 82° | 59° | 71° | — | — |
| 2007 | 77° | 57° | 67° | — | — |
| 2006 | 82° | 54° | 68° | — | — |
| 2005 | 75° | 55° | 65° | — | — |
| 2004 | 73° | 57° | 65° | — | — |
| 2003coldest | 68° | 52° | 60° | — | — |
| 2002 | 77° | 54° | 65° | — | — |
| 2001 | 93° | 65° | 79° | — | — |
| 2000 | 81° | 59° | 70° | — | — |
| 1999 | 89° | 58° | 73° | — | — |
| 1998 | 79° | 54° | 66° | — | — |
| 1997 | 80° | 54° | 67° | — | — |
| 1996 | 84° | 54° | 69° | — | — |
30 years of data from SIMI VALLEY CALIFORNIA